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February 7, 2000
These release notes for the Cisco uBR7200 series universal broadband routers describe the enhancements provided in Cisco IOS Release 12.0(7)XR2, which is an early deployment release based on Cisco IOS Release 12.0 T. These release notes are updated as needed to describe memory requirements, new features, new hardware support, software platform deferrals, and related documents.
For a list of the software caveats that apply to Release 12.0(7)XR2, see the "Caveats for Release 12.0(7)XR2" section. The caveats documents are updated for every maintenance release and are on Cisco Connection Online ( CCO) and the Documentation CD-ROM.
These release notes describe the following topics:
The Cisco uBR7200 series universal broadband routers---the Cisco uBR7223, the Cisco uBR7246, and the Cisco uBR7246 VXR---are based on the Data Over Cable Service Interface Specification (DOCSIS) standards. Each is designed to be installed at a cable operator's headend facility or distribution hub and to function as the cable modem termination system (CMTS) for subscriber-end devices such as Cisco uBR904 and Cisco uBR924 cable access routers, and other DOCSIS-based RF customer premises equipment (CPE) devices.
Cisco uBR7200 series universal broadband routers allow two-way transmission of digital data and Voice over IP (VoIP) traffic over a hybrid fiber coaxial (HFC) network. For cable plants not fully upgraded to support two-way cable transmission, the routers support DOCSIS-based telco return, where the cable modem's return path to the CMTS is via a dial-up telephone line connection instead of an upstream channel over the coaxial cable.
The introduction of the WT2700 Wireless Technology Suite also allows the Cisco uBR7223 and Cisco uBR7246 routers to become a two-way high-speed point-to-point broadband fixed wireless system that provides a fixed, dedicated wireless link from one headend site to another. This link delivers full-duplex data in the licensed MMDS band (2.500 to 2.690 GHz), or unlicensed U-NII band (5.725 to 5.825 GHz). The WT2700 Wireless Technology Suite includes the wireless modem card, which is installed in the Cisco uBR7223 and uBR7246 router chassis, and the Cisco WT2772 wireless transverter, duplexer, and power feed panel, which are external components.
The Cisco uBR7200 series routers support IP routing with a wide variety of protocols and combinations of Ethernet, Fast Ethernet, Gigabit Ethernet, serial, High-Speed Serial Interface (HSSI), Packet over SONET (POS) OC-3 and OC-12c, and Asynchronous Transfer Mode (ATM) media. Additional protocols and media may be added as they become available for the Cisco uBR7200 series routers.
The Cisco uBR7246 VXR features an I/O controller, up to two network interface port adapters, up to four cable modem cards, a high-performance network processing engine, and up to two removable power supplies providing load-sharing and redundancy capabilities. The Cisco uBR7246 VXR provides two PCMCIA slots that allow for software upgrades through the use of Flash memory cards.
The Cisco uBR7246 features an I/O controller, up to two network interface port adapters, up to four cable and wireless modem cards, a network processing engine, and up to two removable power supplies providing load-sharing and redundancy capabilities. The Cisco uBR7246 provides two PCMCIA slots that allow for software upgrades through the use of Flash memory cards.
The Cisco uBR7223 features an I/O controller, one network interface port adapter, up to two cable and wireless modem cards, a network processing engine, and a removable power supply. (The Cisco uBR7223 does not feature load-sharing and redundant power supply capability like the Cisco uBR7246 and Cisco uBR7246 VXR.) The Cisco uBR7223 provides two PCMCIA slots that allow for software upgrades through the use of Flash memory cards.
The Cisco uBR7223 is a cost-effective, scalable interface between subscriber RF CPE devices and the backbone data network, and is designed specifically for small to medium network installations.
These release notes describe the Cisco uBR7200 universal broadband series routers for Cisco IOS Release 12.0(7)XR2. Release 12.0 XR2 is an early deployment (ED) release based on Release 12.0 T that contains fixes to software caveats and support for new Cisco hardware and software features. Table 1 lists key 12.0(7)XR2 feature sets.
| ED Release | Additional Software Features1 | Additional Hardware Features | Availability |
|---|---|---|---|
Release 12.0(7)XR2 |
|
| Now 2/2000
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Release 12.0(5)T1 |
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| Now |
| 1Only major features are listed. See the Release Notes for each particular release for a comprehensive feature list. |
This section describes the system requirements for Release 12.0(7)XR2:
Table 2 displays the memory requirements of the Cisco IOS feature sets for the Cisco uBR7200 series universal broadband routers for Cisco IOS Release 12.0(7)XR2. Cisco uBR7200 series universal broadband routers are available with a 16- or 20-MB Type II PCMCIA Flash memory card.
| Feature Set | Image Name | Required Flash Memory | Required DRAM Memory | Runs From |
|---|---|---|---|---|
DOCSIS Two-Way IP Plus with BPI | ubr7200-ik1s-mz | 16 MB Flash | 64 MB DRAM | RAM |
DOCSIS Two-Way IP Plus Telco Return with BPI | ubr7200-ik1st-mz | 16 MB Flash | 64 MB DRAM | RAM |
DOCSIS Two-Way IP Plus | ubr7200-is-mz | 16 MB Flash | 64 MB DRAM | RAM |
DOCSIS Two-Way IP Plus Telco Return | ubr7200-ist-mz | 16 MB Flash | 64 MB DRAM | RAM |
DOCSIS Two-Way with BPI | ubr7200-k1p-mz | 16 MB Flash | 64 MB DRAM | RAM |
DOCSIS Two-Way | ubr7200-p-mz | 16 MB Flash | 64 MB DRAM | RAM |
The image subset legend for Table 2 is as follows:
This section clarifies the operation of certain features in the Cisco uBR7200 series universal broadband routers:
cmts#show interface cable 3/0 upstream 0
Cable3/0:Upstream 0 is up
Received 13 broadcasts, 0 multicasts, 110 unicasts
0 discards, 106 errors, 0 unknown protocol
123 packets input, 0 uncorrectable
106 noise, 0 microreflections
Total Modems On This Upstream Channel :3 (3 active)
Default MAC scheduler
Queue[Rng Polls] 0/20, fifo queueing, 0 drops
Queue[Cont Mslots] 0/104, fifo queueing, 0 drops
Queue[CIR Grants] 0/20, fair queueing, 0 drops
Queue[BE Grants] 0/30, fair queueing, 0 drops
Queue[Grant Shpr] 0/30, calendar queueing, 0 drops
Reserved slot table currently has 2 CBR entries
Req IEs 280185, Req/Data IEs 0
Init Mtn IEs 800, Stn Mtn IEs 49
Long Grant IEs 26, Short Grant IEs 15
Avg upstream channel utilization :1%
Avg percent contention slots :97%
Avg percent initial ranging slots :1%
Avg percent minislots lost on late MAPs :0%
Total channel bw reserved 192000 bps
CIR admission control not enforced
Current minislot count :1165412 Flag:1
Scheduled minislot count :1176227 Flag:1
Queue [CIR Grants] 0/20, fair queueing, 0 drops means that the queue for CIR-service grants has current depth of 0, max depth of 20. Weighted fair queueing is used to enqueue grants in this queue.
Reserved slot table currently has 2 CBR entries illustrates that at the time the command was issued, the MAC scheduler had admitted 2 CBR slots in the reserved slot table.
Init Mtn IEs 800 means that MAC scheduler has added 800 initial maintenance information elements (slots) at the time the show command was issued.
Cisco IOS Release 12.0(7)XR2 supports the following Cisco uBR7200 series universal broadband routers:
In addition to the currently supported Network Processing Engines (NPE), Cisco IOS Release 12.0(7)XR2 also supports the NPE-300 card, which has an R7000 microprocessor that operates at an internal clock speed of 262 MHz (supported only on the Cisco uBR7426 VXR).
Cisco IOS Release 12.0(7)XR2 supports the following cable modem cards:
Cisco IOS Release 12.0(7)XR2 supports the wireless modem card and subsystem, which are part of the WT2700 Wireless Technology Suite and which provide a fixed, high-speed, point-to-point wireless link (up to 44 Mbps full-duplex) in a 6 MHz or 12 MHz RF channel in the licensed MMDS band (2.500 to 2.690 GHz) or unlicensed U-NII band (5.725 to 5.825 GHz). The wireless modem card (UBR-MCW-PDA) and its subsystem---power feed panel (UBR-WPFD), duplexer (UBR-ODD), and wireless transverter (CISCO-WT2772-PAA)---are new.
Table 3 lists and describes the port adapters supported by Cisco uBR7200 series routers in Cisco IOS Release 12.0(7)XR2. All models of routers support a port adapter if its "Platforms Supported" column reads "Cisco uBR7200 series routers"; otherwise, only the specific models shown support that particular port adapter.
| Product Number1 | Description | Platforms Supported | In2 |
|---|---|---|---|
| ATM | |||
1-port ATM OC-3c/STM-1 single-mode intermediate reach port adapter | Cisco uBR7223, uBR7246 | 12.0(5)T1 and later 12.0 T releases | |
1-port ATM OC-3c/STM-1 multimode port adapter | Cisco uBR7223, uBR7246 | 12.0(5)T1 and later 12.0 T releases | |
PA-A2-4E1XC-OC 3SM | 5-port ATM CES3 (4 E1 120-ohm CBR4 ports and 1 OC-3 ATM single-mode port) port adapter | Cisco uBR7246 | 12.0(5)T1 and later 12.0 T releases |
5-port ATM CES3 (4 E1 120-ohm CBR4 ports and 1 E3 ATM port) port adapter | Cisco uBR7246 | 12.0(5)T1 and later 12.0 T releases | |
5-port ATM CES3 (4 T1 CBR4 ports and 1 OC-3 ATM single-mode port) port adapter | Cisco uBR7246 | 12.0(5)T1 and later 12.0 T releases | |
5-port ATM CES3 (4 T1 CBR4 ports and 1 T3 ATM port) port adapter | Cisco uBR7246 | 12.0(5)T1 and later 12.0 T releases | |
1-port E3 ATM, PCI5-based port adapter | Cisco uBR7200 series | 12.0(5)T1 and later 12.0 T releases | |
1-port T3 ATM, PCI-based port adapter | Cisco uBR7200 series | 12.0(5)T1 and later 12.0 T releases | |
1-port OC-3c/STM-1 multimode port adapter | Cisco uBR7223, uBR7246 | 12.0(5)T1 and later 12.0 T releases | |
1-port OC-3c/STM-1 single-mode, intermediate reach port adapter | Cisco uBR7223, uBR7246 | 12.0(5)T1 and later 12.0 T releases | |
1-port OC-3c/STM-1 single-mode, long reach port adapter | Cisco uBR7223, uBR7246 | 12.0(5)T1 and later 12.0 T releases | |
| Ethernet | |||
4-port Ethernet 10BaseT port adapter | Cisco uBR7200 series routers | 12.0(5)T1 and later 12.0 T releases | |
8-port Ethernet 10BaseT port adapter | Cisco uBR7200 series routers | 12.0(5)T1 and later 12.0 T releases | |
1-port 100BaseTX Fast Ethernet port adapter | Cisco uBR7200 series routers | 12.0(5)T1 and later 12.0 T releases | |
1-port 100BaseFX Fast Ethernet port adapter | Cisco uBR7200 series routers | 12.0(5)T1 and later 12.0 T releases | |
2-port 100BaseTX Fast Ethernet port adapter with token-ring Inter-Switch Link (ISL) support | Cisco uBR7200 series routers | 12.0(5)T1 and later 12.0 T releases | |
2-port 100BaseFX Fast Ethernet port adapter with token-ring Inter-Switch Link (ISL) support | Cisco uBR7200 series routers | 12.0(5)T1 and later 12.0 T releases | |
12-port 10BaseT and 2-port 10/100BaseTX port adapter | Cisco uBR7246 | 12.0(5)T1 and later 12.0 T releases | |
1-port IEEE 802.3z Gigabit Ethernet port adapter | Cisco uBR7246 VXR only | 12.0(7)XR2 and later releases | |
| High-Speed Serial Interfaces (HSSI) | |||
1-port HSSI port adapter | Cisco uBR7200 series routers | 12.0(5)T1 and later 12.0 T releases | |
2-port HSSI port adapter | Cisco uBR7200 series routers | 12.0(5)T1 and later 12.0 T releases | |
| Packet-Over-SONET (POS) | |||
1-port POS OC-3 (STM-3c,STM-1/SDH) single-mode, long reach port adapter | Cisco uBR7200 series routers | 12.0(5)T1 and later 12.0 T releases | |
1-port POS OC-3 (STM-3c,STM-1/SDH) single-mode, intermediate reach port adapter | Cisco uBR7200 series routers | 12.0(5)T1 and later 12.0 T releases | |
1-port POS OC-3 (STM-3c,STM-1/SDH) multimode port adapter | Cisco uBR7200 series routers | 12.0(5)T1 and later 12.0 T releases | |
| Serial | |||
4-port synchronous serial port adapter | Cisco uBR7223, uBR7246 | 12.0(5)T1 and later 12.0 T releases | |
8-port EIA/TIA-232 synchronous serial port adapter | Cisco uBR7223, uBR7246 | 12.0(5)T1 and later 12.0 T releases | |
8-port V.35 synchronous serial port adapter | Cisco uBR7223, uBR7246 | 12.0(5)T1 and later 12.0 T releases | |
8-port X.21 synchronous serial port adapter | Cisco uBR7223, uBR7246 | 12.0(5)T1 and later 12.0 T releases | |
4-port unbalanced (75-ohm) E1-G.703/G.704 synchronous serial port adapter | Cisco uBR7223, uBR7246 | 12.0(5)T1 and later 12.0 T releases | |
4-port balanced (120-ohm) E1-G.703/G.704 synchronous serial port adapter | Cisco uBR7223, uBR7246 | 12.0(5)T1 and later 12.0 T releases | |
1-port E3 serial port adapter | Cisco uBR7223, uBR7246 | 12.0(5)T1 and later 12.0 T releases | |
1-port T3 serial port adapter | Cisco uBR7223, uBR7246 | 12.0(5)T1 and later 12.0 T releases | |
2-port E3 serial port adapter | Cisco uBR7223, uBR7246 | 12.0(5)T1 and later 12.0 T releases | |
2-port T3 serial port adapter | Cisco uBR7223, uBR7246 | 12.0(5)T1 and later 12.0 T releases | |
1 multichannel E3, medium-speed serial interface | Cisco uBR7223, uBR7246 | 12.0(5)T1 and later 12.0 T releases | |
1 multichannel T3 interface with BNC connectors | Cisco uBR7223, uBR7246 | 12.0(5)T1 and later 12.0 T releases | |
1 multichannel DS1/PRI with 4 T1 interfaces (RJ-48C connectors) | Cisco uBR7223, uBR7246 | 12.0(5)T1 and later 12.0 T releases | |
1 multichannel DS1/PRI with 8 T1 interfaces (RJ-48C connectors) | Cisco uBR7223, uBR7246 | 12.0(5)T1 and later 12.0 T releases | |
1 multichannel E1/PRI with 8 E1 interfaces (RJ-48C connectors) | Cisco uBR7223, uBR7246 | 12.0(5)T1 and later 12.0 T releases | |
| 1Refer to the Documentation CD-ROM or http://www.cisco.com, http://www-china.cisco.com, or http://www-europe.cisco.com for the most current list of supported port adapters. 2The number in the "In" column indicates the Cisco IOS release when the interface was first introduced. 3CES = circuit emulation services. 4CBR = constant bit rate. 5PCI = Peripheral Component Interconnect. |
To determine the version of Cisco IOS software running on the Cisco uBR7200 series universal broadband router, log in to the router and enter the show version EXEC command:
router> show version Cisco Internetwork Operating System Software IOS (tm) ubr7200 Software (ubr7200-p-mz), Version 12.0(7)XR2, RELEASE SOFTWARE
Cisco IOS Software Release 12.0(7)XR2 is derived from the 12.0 T release train
Under Cisco IOS 12.0, click Cisco IOS Software Release 12.0T (#819:0999). This document can also be found on CCO at http://www.cisco.com/warp/public/cc/cisco/mkt/ios/rel/120/prodlit/819_pp.htm. (You must have an account on CCO to access this URL.)
Cisco IOS software is packaged in software images consisting of feature sets---depending on the platform. Each feature set contains a specific set of Cisco IOS features.
Table 4 lists the features and feature sets supported by the Cisco uBR7200 series in Cisco IOS Release 12.0(7)XR2 and uses the following conventions:
| Feature | Feature Set | ||||||
|---|---|---|---|---|---|---|---|
| In1 | DOCSIS Two-way | DOCSIS Two-way with BPI | DOCSIS Two-way, IP Plus | DOCSIS Two-way, IP Plus, Telco Return | DOCSIS Two-way, IP Plus with BPI | DOCSIS Two-way, IP Plus, Telco Return with BPI | |
| Internet | |||||||
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | No | No | No | Yes | No | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| IP Routing | |||||||
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | No | No | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (7)XR2 | Yes | Yes | Yes | Yes | Yes | Yes |
| (7)XR2 | Yes | Yes | Yes | Yes | Yes | Yes |
| Management | |||||||
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| Multimedia | |||||||
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| Quality of Service | |||||||
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | No | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (7)XR2 | Yes | Yes | Yes | Yes | Yes | Yes |
| Security | |||||||
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | No | Yes | No | No | Yes | Yes |
| (5)T1 | No | Yes | No | No | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (7)XR2 | No | No | No | Yes | No | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| Switching | |||||||
| (5)T1 | Yes | Yes |
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| WAN Optimization |
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| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| WAN Services | |||||||
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| (5)T1 | Yes | Yes | Yes | Yes | Yes | Yes |
| 1This column indicates the maintenance release in which the feature was introduced. For example, (5)T1 means a feature is introduced in 12.0(5)T1. |
The following sections list the new hardware and software features supported by the Cisco uBR7200 series routers for Cisco IOS Release 12.0(7)XR2. For a complete list of hardware and software features, listed by the release in which they first appeared, see Release Notes for Cisco uBR7200 Series for Cisco IOS Release 12.0 T.
The following new hardware features are supported by the Cisco uBR7200 series routers in Cisco IOS Release 12.0(7)XR2.
The MC16E cable modem card provides one downstream and six upstream connections to the cable network, similar to the MC16C cable modem card, except that it supports the ITU J.83 Annex A physical layer and the proposed EuroDOCSIS (Annex A) standard (Cable Labs ECR RFI-R-98036). The MC16E card has the following differences with the current MC16C card:
All cable interface commands have been updated to support the MC16E cable modem card.
The software for the MC16S spectrum management cable modem cards is a driver running on the Cisco uBR7200 series universal broadband router. Using a Peripheral Component Interconnect (PCI) interface, the universal broadband router software interacts with the cable modem card. Data is passed back and forth, as direct memory access (DMA) transfers, from the Cisco uBR7200's memory to the cable modem card.
Additionally, the MC16S cable modem card supports universal broadband router cable modem card management and control with the cable modem card Management Information Bases (MIBs), Media Access Control (MAC) control software, and logical link management software based on DOCSIS standards.
The MC16S provides dedicated hardware support for advanced spectrum management through a daughter spectrum management card. This card contains a spectrum analyzer that samples the 5 to 42 MHz upstream frequency spectrum in real-time, analyzing the number of offline RF CPE devices. If the number of offline RF CPE devices reaches a user-defined threshold value, the spectrum management card takes a snapshot of the available upstream spectrum and passes that information to the IOS software, which analyzes it for possible significant ingress and impulse noise.
Using this analysis, the IOS software evaluates the upstream frequency spectrum and if necessary automatically hops to a frequency that can provide a clean upstream channel. This eliminates "blind" frequency hops and can improve response time to ingress noise impairments.
The cable upstream interface command now includes a new parameter when used to configure an interface on the MC16S cable modem card, to allow the creation of a range of channel width. The new syntax is cable upstream port channel-width channel-width-1 channel-width-2 where the possible channel width values are 200000, 400000, 800000, 1600000, 3200000.
The cable upstream port modulation-profile modulation-number command configures the upstream modulation profile.
The wireless modem card is part of the WT2700 Wireless Technology Suite, which provides a high-speed point-to-point fixed broadband wireless system using Cisco uBR7223 and Cisco uBR7246 routers. In addition to the wireless modem card (UBR-MCW-PDA), which is installed in the Cisco uBR7223 and Cisco uBR7246 chassis, the WT2700 wireless subsystem includes a power feed panel (UBR-WPFD), duplexer (UBR-ODD), and wireless transverter (CISCO-WT2772-PAA), which are external components.
The software for the wireless modem card is a driver running on the Cisco uBR7200 series universal broadband routers. Using a PCI interface, the universal broadband router line card software interacts with the card. Data is passed back and forth, as direct memory access (DMA) transfers, from the Cisco uBR7200's memory to the card.
Additionally, the wireless modem card supports universal broadband router line card management and control with the modem card Management Information Bases (MIBs), Media Access Control (MAC) control software and logical link management software based on DOCSIS standards. Security is available using Baseline Privacy Interface (BPI) encryption.
The Cisco IOS software has a number of new and enhanced commands to support the wireless modem card. The wireless modem card is also one component of a complete fixed wireless subsystem. For more information about the new commands and additional wireless hardware, see the Cisco uBR7200 Series Wireless Modem Card and Subsystem Installation and Configuration publication.
The IEEE 802.3z Gigabit Ethernet Port Adapter (PA-GE) is a single-port port adapter that provides a full-duplex, IEEE 802.3z compliant Gigabit Ethernet (GE) interface. The PA-GE is supported on the Cisco uBR7246 VXR universal broadband router; it is not supported on the Cisco uBR7223 and Cisco uBR7246 routers.
The PA-GE port adapter supports the following IEEE 802.3z interfaces:
The NPE-300 network processing engine (NPE) has an RM7000 RISC microprocessor that operates at an internal clock speed of 262 MHz. The microprocessor has three levels of cache: a primary cache (32 KB, divided equally between instruction and data) and a secondary unified cache (256 KB, used for both data and instructions) that are internal to the microprocessor, and a third external cache (2 MB) that provides additional high-speed storage for both data and instructions.
The NPE-300 uses SDRAM (64 MB to 256 MB) for code, data, and packet storage. The card boots from its onboard BOOT ROM (512 KB), so it does not require an upgrade to the BOOT ROM on the I/O controller.
 | Caution The NPE-300 card is supported only on the Cisco uBR7246 VXR when using Cisco IOS Release 12.0(7)XR2 and later images. Also, the NPE-300 card does not support the original MC11 FPGA modem card, so you must use the MC11C modem card or other current modem card (see "Cable Modem Cards" section). |
For information on replacing the network processing engine, see Network Processing Engine Replacement Instructions , available on CCO and the Cisco Documentation CD-ROM.
Cisco IOS Release 12.0(7)XR2 supports the Cisco uBR7246 VXR, a high-performance platform that contains four slots for cable modem cards, two port adapter slots (supporting either two single-width or one dual-width port adapter), one slot for an input/output (I/O) controller card, and one slot for the NPE-300 high-performance network processing engine (NPE). An additional slot is available for a national clock card (which is not yet released). The Cisco uBR7246 VXR also supports dual power supplies; the second power supply is optional but provides redundancy and load-sharing capabilities.
The following new software features are supported by the Cisco uBR7200 series universal broadband routers in Cisco IOS Release 12.0(7)XR2.
Cisco uBR7200 series universal broadband routers now include support for the DOCSIS Baseline Privacy Interface (BPI) MIB. This allows an SNMP manager to monitor and manage the router's BPI configuration, including whether BPI is enabled, status of current authorization keys, current timeout values, real-time status counters, and additional information about authorization errors.
Cable interface bundling allows a service provider to share one IP subnet across multiple cable interfaces that are grouped into a cable interface bundle. All of the cable interfaces on a Cisco uBR7200 series universal broadband router can be grouped into a single bundle so that only one subnet is required for each router. This eliminates the requirement that a separate IP subnet be used for each individual cable interface. This in turn avoids the performance, memory, and security problems that would result if a bridging solution were used to manage the subnets, especially for a large number of subscribers.
Two new Cisco IOS interface commands implement this feature:
A number of DOCSIS quality of service (QoS) enhancements have been added to Cisco IOS Release 12.0(7)XR2; these features parallel some of those that are expected in the DOCSIS 1.1 specification when it is finalized.
The Cisco uBR7200 series universal broadband router supports polling of the RF CPE devices to obtain parameter and status information on an ongoing basis. Two new Cisco IOS commands are added to support this feature.
The cable modem remote command configures the router for the polling interval; the no version of this command disables the status polling. The show cable modem remote-query command displays the collected information:
A number of Cisco IOS cable interface commands have been enhanced:
If a telco return customer is being authenticated by a RADIUS or TACACS+ server, and if the number dialed by the RF CPE device is being redirected to another number for authentication, Cisco IOS Software Release 12.0(7)XR2 can include the original number in the information sent to the authentication server. The original number can be sent as a Cisco Vendor Specific Attribute (VSA) for TACACS+ servers and as RADIUS Attribute 93 (Ascend-Redirect-Number) for RADIUS servers. This allows the service provider to determine whether the customer dialed a number that requires special billing arrangements, such as a toll-free number.
This feature is enabled with the aaa nas redirected-station command and disabled with the no aaa nas redirected-station command; other AAA configuration commands also apply as appropriate. The RADIUS Attribute 93 is sent by default; to also send a VSA attribute for TACACS+ servers, use the radius-server vsa send accounting and radius-server vsa send authentication commands. To configure the RADIUS server to use RADIUS Attribute 93, add the non-standard option to the radius-server host command.
Cisco IOS Release 12.0(7)XR2 supports the creation of subinterfaces on cable interfaces or cable interface bundles to support virtual private networks (VPNs) over the cable interface. Each subinterface is assigned to a specific pool of IP addresses, mapping that subinterface to a particular VPN customer network. A Generic Routing Encapsulation (GRE) tunnel must be created between the Cisco uBR7200 series universal broadband router and the router that serves as the VPN customer gateway.
When a RF CPE device registers with the Cisco uBR7200 series universal broadband router, its IP address is used to identify the subinterface being used by the RF CPE device; this information is used to associate the Service Identifier (SID) assigned to the modem to that subinterface (and thus the VPN customer network). Policy-based routing must also be configured on the subinterface to route the packets received on the subinterface to the correct GRE tunnel.
A subinterface can be created on any cable interface that is not part of a cable interface bundle. A subinterface can also be created on the master cable interface bundle; subinterfaces cannot be created on non-master bundles. Subinterfaces are created using the interface cable x/y.n command where x is the slot or master bundle number, y is the port number, and n is the subinterface number to be created.
VPN Subinterface support involves the following existing cable interface commands:
This feature prevents the spoofing of IP addresses by verifying that each upstream data packet comes from the RF CPE device known to be associated with the source IP address in the packet. The cable source-verify [ dhcp ] cable interface command specifies that DHCP lease query requests are sent to verify any unknown source IP address found in upstream data packets. This feature requires a DHCP server that supports the new LEASEQUERY message type.
The following hardware features are supported by the Cisco uBR7200 series routers in Cisco IOS Release 12.0(5)T1.
The MC16B cable modem card is available for the Cisco uBR7200 series universal broadband router. The software for the MC16B modem card is a driver running on the router and interacts with the card using a PCI interface. Data is passed back and forth, using direct memory access (DMA) transfers, from the Cisco uBR7200 memory to the MC16B card.
Additionally, the MC16B card supports universal broadband router line card management and control with the MC16 MIB, MAC control software and logical link management software based on MCNS standards.
The software for the MC16C cable modem card is a driver running on the Cisco uBR7200 series universal broadband routers. Using a PCI interface, the universal broadband router line card software interacts with the MC16C cable modem card. Data is passed back and forth, as Direct Memory Access (DMA) transfers, from the Cisco uBR7200's memory to the MC16C cable modem card.
Additionally, the MC16C cable modem card supports line card management and control with the MC16C MIB, Media Access Control (MAC) control software and logical link management software based on DOCSIS standards.
The software for the MC12C and MC14C cable modem cards is a driver running on the Cisco uBR7200 series universal broadband routers. Using a PCI interface, the universal broadband router line card software interacts with the cable modem card. Data is passed back and forth, as direct memory access (DMA) transfers, from the Cisco uBR7200's memory to the cable modem card.
Additionally, the MC12C and MC14C cable modem cards support universal broadband router line card management and control with the modem card Management Information Bases (MIBs), Media Access Control (MAC) control software and logical link management software based on DOCSIS standards.
The multichannel DS1/PRI port adapter (PA-MC-4T1 and PA-MC-8T1 versions) is a single-wide module that integrates channel service unit (CSU) functionality, data service unit (DSU) functionality, and DS0 channel support into Cisco uBR7200 series routers. The PA-8DSX-1 version integrates DS1 data service unit (DSU) functionality and DS0 channel support into the Cisco uBR7200 series routers.
The multichannel DS1/PRI port adapter provides four or eight independent T1 (100-ohm) connections via RJ-48C connectors. Each multichannel DS1/PRI port adapter can provide up to 128 separate full-duplex HDLC DS0, fractional, or full T1 channels.
The multichannel E1/PRI port adapter (PA-MC-8E1/120) is a single-wide module that integrates DSU functionality and E1 channel support into Cisco uBR7200 series universal broadband routers. The multichannel E1/PRI port adapter provides eight independent E1 (120-ohm) connections via RJ-48C connectors. Each multichannel E1/PRI port adapter can provide up to 128 separate full-duplex HDLC channelized E1, fractional E1, full E1, or unframed E1 interfaces.
The following new software features are supported by the Cisco uBR7200 series universal broadband routers in Cisco IOS Release 12.0(5)T1.
This feature provides support for a basic wiretap facility for VoIP calls, as required by the United States Federal Communications Assistance for Law Enforcement Act (CALEA). The wiretap facility is based on the MAC address of the RF CPE device, so it can be used for either data or digitized voice connections.
The feature is controlled by the new interface command, cable intercept, which requires a MAC address, an IP address, and a UDP port number as its parameters. When activated, the Cisco uBR7200 series universal broadband router examines each packet for the desired MAC address; when a matching MAC address is found (for either the origination or destination endpoint), a copy of the packet is encapsulated into a UDP packet, which is then sent to the specified server at the given IP address and port.
This feature allows Cisco uBR7200 series universal broadband routers to change the downstream frequency for any or all RF CPE devices, overriding the DOCSIS configuration file settings.
The Cisco uBR7200 series universal broadband routers contain the following additional or changed show commands:
The Automated Double Authentication feature enhances the existing double authentication feature. Previously, with the existing double authentication feature, a second level of user authentication was achieved when the user telnets to the network access server or router and enters a username and password. Now, with automated double authentication, the user does not have to use Telnet but instead responds to a dialog box that requests a username and password or PIN.
For each modulation/burst profile configuration, Cisco uBR7200 series universal broadband routers will support burst profile number, burst profile interval usage code, burst type, preamble length and unique word length, differential encoding enable/disable, forward error correction (FEC) correctable bytes value, FEC code word length, scrambler seed value, maximum burst size, guard time size, last code word shortened/lengthened, and scrambler enable/disable.
As an enhancement to baseline privacy, Cisco uBR7200 series universal broadband routers can be configured for RF CPE device and multicast authentication using the Remote Authentication Dial-In User Service (RADIUS) protocol, an access server authentication, authorization, and accounting protocol originally developed by Livingston, Inc. This release also introduces support for additional vendor-proprietary RADIUS attributes.
When a RF CPE device comes online or when an access request is sent through a multicast data stream, the Cisco uBR7200 series universal broadband routers send relevant information to RADIUS servers for RF CPE device/host authentication. This feature can be configured on a per-interface basis.
An Internet Engineering Task Force (IETF) draft standard, RFC 2138, defines the RADIUS protocol. RFC 2139 defines the corresponding RADIUS accounting protocol. Additional RFC drafts define vendor-proprietary attributes and MIBs that can be used with an SNMP manager.
Cisco IOS Release 12.0(5)T1 implements the latest revision (version 3) of the Simple Network Management Protocol (SNMPv3), which builds on top of the previous SNMPv1 and SNMPv2 versions of the protocol to provide a much more secure network environment. SNMPv3 also improves the remote configuration of the SNMP entities, which makes the remote administration of SNMP agents, such as RF CPE devices, a much simpler task.
SNMPv3 uses the concept of an engine to link specific applications and security features with a group of SNMP entities. Each SNMP entity has an EngineID identifier, and SNMP communication is possible only when an SNMP entity knows the EngineID identity of its peer SNMP device.
SNMPv3 provides for synchronization between SNMP entities so that any management requests that appear outside of the synchronization windows are rejected. Security is also enhanced by the use of a user-based security model (USM) that provides message encryption to protect against the following types of attacks on the network:
The SNMPv3 protocol is defined by the Request for Comment (RFC) specifications RFC 2570, RFC 2571, RFC 2572, RFC 2573, RFC 2574, and RFC 2575.
The Cisco uBR7200 series universal broadband router can use Committed Access Rate (CAR) policies to control the traffic exceeding its allocated bandwidth. This feature uses token bucket filters to measure the traffic load and limit sources, at either the network ingress or egress, to the allocated bandwidth.
This feature---also known as the CPE Limitation---allows Cisco uBR7200 series universal broadband routers to report and limit the number of CPEs that can use the cable modem to access the cable network.
This feature---also known as Cable Modem and Host Subnet Addressing---allows the Cisco uBR7200 series universal broadband router to set the GIADDR field of DHCPDISCOVER and DHCPREQUEST packets with a Relay IP Address to help automate the provisioning of RF CPE devices on systems that use multiple IP subnets. The cable dhcp-giaddr [policy | primary] command enables this feature on a per-interface basis.
The Cisco uBR7200 series universal broadband routers support quality of service (QoS) as defined by the DOCSIS 1.0 specification. Service class profiles can be configured through the command-line interface to support the QoS profile number, traffic priority, maximum upstream bandwidth, guaranteed upstream bandwidth, maximum downstream bandwidth, maximum transmit burst length, baseline privacy enable/disable, and type of service (ToS) overwrite byte.
QoS Profile Enforcement allows CMTS operators to control the QoS to eliminate any interference from improper local-rate limiting implemented on the RF CPE device. The CMTS provisions a registering RF CPE device with a default DOCSIS 1.0 service class assigned by the operator, overriding any service class that previously existed on the modem. This service class has no upstream or downstream rate limits, so that the CMTS can do traffic shaping based on the QoS profile enforced by the operator.
As part of this support, Cisco uBR7200 series universal broadband routers support multiple service classes per RF CPE device by providing multiple QoS service identifiers (SIDs). This allows the Cisco uBR7200 series CMTS to dynamically allocate and delete service flows for voice and fax transmissions.
The following commands are available on Cisco uBR7200 series universal broadband routers to update the QoS table:
This feature allows all RF CPE devices in an HFC network to identify themselves via unique downstream channel IDs instead of their downstream frequencies.
Cisco uBR7200 series routers support downstream data rate shaping on a per modem basis. The ToS bits in the IP packet header can be set to specify that packet's class of service, allowing packets for certain traffic flows (such as VoIP) to be given precedence over packets for other flows (such as data).
Downstream rate shaping with ToS bits allows you to configure multiple data rates for a given modem. Also, by specifying a maximum data rate for a particular ToS, you can override the common maximum downstream data rate. Packets that contain ToS bytes that have not been configured for downstream data rates continue to use the common data rate limits.
Prior releases set the ToS bits to zero; however, with the advent of virtual private network (VPN) and QoS applications, it is desirable to copy the ToS bits when the router encapsulates the packets using generic routing encapsulation (GRE). Thus, intermediate routers between tunnel endpoints can also take advantage of QoS features such as weighted fair queuing (WFQ) and weighted random early detection (WRED).
Baseline privacy extensions permit the encryption of data transferred between the RF CPE device and the Cisco uBR7200 universal broadband router. The key management protocol defined by baseline privacy allows Cisco uBR7200 series universal broadband routers to provide two types of keys to RF CPE devices. The Key Exchange Key (KEK) decrypts the Traffic Exchange Keys (TEK). The TEK is the key used to encrypt and decrypt data packets.
Extensive command-line interface enhancements include user configuration using the command-line interface, SNMP, and HTTP. All methods will provide essentially the same set of configuration objects.
The Cisco uBR7200 series universal broadband router offers an integrated Dynamic Host Configuration Protocol (DHCP) server to simplify provisioning of RF CPE devices.
Cisco uBR7200 series universal broadband routers are now able to respond to RFC 868 time-of-day (ToD) queries from RF CPE devices during the registration process.
Cisco uBR7200 series routers support the Inter-Switch Link (ISL) feature, a Cisco protocol for interconnecting multiple routers and switches. The ISL protocol maintains Virtual Local Area Network (VLAN) information as traffic passes between routers and switches.
The Management Information Base (MIB) support in the Cisco uBR7200 series universal broadband routers provides much of the same ability to configure the router as using CLI commands at the router's console port. Additionally, the Radio Frequency (RF) Interface MIB has changed to improve the object support for traps and to add the following QoS and service class support:
IP policy routing now works with Cisco Express Forwarding (CEF), Distributed CEF (DCEF), NetFlow, and NetFlow with flow acceleration. IP policy routing was formerly supported only in fast-switching and process-switching. Now that policy routing is integrated into CEF, you can deploy policy routing on wide-scale and high-speed interfaces.
NetFlow switching is a high-performance, network-layer switching path that provides network administrators with access to "call detail recording" information from their data networks; this information includes details such as user, protocol, port, type of service information, and the duration of the communication. This data can be used for a variety of purposes, including billing, enterprise accounting, network planning and performance analysis, quality of service (QoS) bandwidth management, security policies, and data warehousing/mining for marketing purposes.
The collected NetFlow data is sent out via UDP packets to a workstation running the Netflow Flowcollector server, which can collect data from multiple routers for later analysis by a user running the Netflow Flowanalyzer application. Through the NetFlow Data Export feature, traffic information can also be passed to external applications that perform functions such as billing or network performance analysis.
NetFlow also provides a highly efficient mechanism that can process security access lists without incurring the same performance penalty as other available switching methods. In conventional switching at the network layer, each incoming packet is handled on an individual basis with a series of functions to perform access list checks, capture accounting data, and switch the packet. In contrast, after NetFlow switching identifies a flow and processes the access list for the flow's first packet, all subsequent packets are handled on a "connection-oriented" basis as part of the flow. This avoids further access list checks on the flow, and packet switching and statistics capture are performed in tandem.
Use the ip flow-cache, ip flow-export, and ip route-cache commands to configure Netflow Switching. See the Cisco IOS Release 12.0 Cisco IOS Switching Services Configuration Guide on the Documentation CD-ROM and CCO for more details.
The Parse Bookmarks feature quickly processes consecutive similar commands, such as access lists and prefix lists, up to five times faster than usual. This feature reduces boot and load time for large configurations with many similar consecutive commands. This feature is an enhancement to the parsing algorithm, so no configuration changes are needed to take advantage of it.
This feature---also known as Per-Modem and Per-Host Access Lists---allows Cisco uBR7200 series universal broadband routers to filter incoming packets from individual hosts or RF CPE devices based on the source MAC or IP address. This allows access lists to be specified on a per-interface or a per-address basis.
The addition of the CISCO-PROCESS-MIB and changes to the CISCO-MEMORY-POOL-MIB will allow you to retrieve more CPU and memory statistics. The CISCO-CALL-HISTORY-MIB will let you retrieve call information for accounting purposes.
The Resource Reservation Protocol (RSVP) works together with Weighted Fair Queuing (WFQ) to give priority to packets that fall into a reservation within RSVP so that the packets enter the output queue and cable network before other packets.
The Service Assurance (SA) Agent is both an enhancement to and a new name for the Response Time Reporter (RTR) feature that was introduced in Cisco IOS Release 11.2. This feature allows you to monitor network performance by measuring key Service Level Agreement metrics such as response time, network resources, availability, jitter, connect time, packet loss, and application performance.
With Cisco IOS Release 12.0(5)T1, the SA Agent provides new capabilities that enable you to:
The following spectrum management enhancements are available in the Cisco uBR7200 series universal broadband routers:
Tag Switching is a Cisco-developed technology that implements a next-generation architecture for the Internet backbone and large Intranets. Tags placed on the fronts of packets contain forwarding information used for making switching decisions and applying network services.
Tag Switching has become the foundation for flexible Layer 3 virtual private networks (VPNs), QoS handling, and traffic engineering. It also forms the basis for the emerging IETF standard for Multiprotocol Label Switching (MPLS).
A Tag Switching infrastructure combines with advanced routing protocol capabilities to define IP VPNs by selectively advertising IP reachability information to just those subscribers within the same VPN or extranet, thus keeping different VPN traffic logically separate. The subscribers are then all connected via Tag switch paths (TSPs).
Forwarding is based entirely upon the assigned Tag values (rather than IP destination prefixes), eliminating the requirement for uniqueness in the IP addresses that are used. This feature means subscribers to different VPNs do not have to concern themselves with the problems that would otherwise occur when connecting networks with different subnetworks into an integrated network.
This feature prevents the spoofing of IP addresses by verifying the IP address against the RF CPE device's MAC address. The cable source-verify [ dhcp ] cable interface command specifies that DHCP lease query requests are sent to verify any unknown source IP address found in upstream data packets. This feature requires a DHCP server which supports the new LEASEQUERY message type.
This feature was first introduced in Cisco IOS Release 11.3(9)NA1. The Cisco uBR7200 series universal broadband router supports buffering both upstream and downstream grants/packets to RF CPE devices that are exceeding their allocated bandwidth. This strategy helps to avoid the TCP timeouts and the retransmission of the associated packets which would further degrade overall throughput.
Previously, whenever a RF CPE device was found to be exceeding its configured peak upstream or downstream rate, the Cisco uBR7200 series universal broadband router would simply ignore bandwidth requests from that RF CPE device until it could be allowed to send more data.
The cable downstream port number rate-limit token-bucket shaping and cable upstream port number rate-limit token-bucket shaping commands configure the Cisco uBR7200 series universal broadband router to perform rate shaping by buffering the grants/packets for rate-exceeded modems.
Support for both version 1 and version 2 of the Web Cache Control Protocol (WCCP and WCCPv2). See the Cisco Cache Engine User Guide , Version 2.0.0 on CCO and the Documentation CD-ROM for more information about WCCP and WCCPv2. (Previous releases of Cisco IOS Release 12.0 supported only version 2 (WCCPv2) and previous releases of Cisco IOS Release 11.3NA supported only version 1 (WCCP) of the protocol.)
The Weighted Random Early Detection (WRED) feature enhances the Random Early Detection (RED) algorithm of handling congestion conditions by allowing the administrator to specify preferential traffic handling for higher priority traffic (as defined by the IP precedence bits). Administrators can define the minimum and maximum queue depth thresholds and drop probabilities for each class of service.
The Weighted Fair Queuing (WFQ) feature performs priority output queuing and custom queuing to grant resources to important sessions when the network bandwidth is saturated; for example, priority could be given to digitized voice traffic to minimize delays. WFQ provides expeditious handling of high priority traffic while fairly sharing the remaining bandwidth between the lower priority traffic.
Cisco IOS Release 12.0(7)XR2 for the Cisco uBR7200 series universal broadband routers contains the following limitations and restrictions. Unless otherwise indicated, these limitations and restrictions apply to all previous software releases as well.
Because the DOCSIS-specified Telephony Channel Descriptor (TCD) messages do not distinguish between telco return and two-way cable modems, CLI commands on the Cisco uBR7200 series router do not distinguish between these two types of cable modems. In addition, the MC16E cable modem card cannot distinguish between EuroDOCSIS cable modems and set top boxes (STBs).
The MC16S spectrum management cable modem card can be configured to instruct a set of RF CPE devices to switch to another upstream channel should the current upstream channel become too noisy for reliable communications. The MC16S onboard spectrum analyzer uses a historical, weighted average to determine which channels have the least noise. A clean channel is characterized by noise-free operation for a certain period of time (the exact period of time depends on the condition of the other upstreams and how much noise they have been experiencing). This technique gives some measure of assurance that the new upstream channel is stable and can provide a higher quality of signal than the upstream channel previously in use.
Therefore, when the MC16S cable modem card hops from one upstream channel to another, it might not select the channel that is the most noise-free at that particular time. Instead, the MC16S card selects the channel with the best historical record at the time.
A side effect of this approach is that some channels might not be considered clean immediately upon release, and this reduces the maximum channel width available for hops. When upstreams hop back-to-back, the MC16S card might not have enough clean channel width for the maximum channel width for all upstreams, which means the card is not using the maximum channel width.
The user retains the option of configuring the MC16S to hop to the cleanest channel with a specified channel width, as opposed to finding the cleanest channel with a range of channel widths.
When replacing a cable modem card using online insertion and removal (OIR), Cisco recommends you use the shutdown interface command on the card's interfaces before removing the card. After inserting the replacement card, use the no shutdown command to re-enable the card's interfaces.
This is especially important when replacing the cable modem card that supplies the MAP timer. If you remove this cable modem card without using the shutdown command, it disables the MAP timer and causes all RF CPE devices attached to the Cisco uBR7200 series router to go offline. The shutdown command, however, transfers the MAP timer function to the next available cable modem card, so that the RF CPE devices attached to the other interfaces are not affected by the OIR of this particular cable modem card.
The port adapters shown in Table 5 must be at the indicated hardware revision levels to be used in the Cisco uBR7246 VXR router. If an earlier revision level of one of these port adapters is installed in a Cisco uBR7246 VXR, the port adapter is disabled and the following error message is displayed:
%PA-3-REVNOTSUPPORTED: PA in slot x (xxxx) requires base h/w revision of (x.xx) for this chassis
| Port Adapter | Required Hardware Revision | Minimum Part Number |
|---|---|---|
PA-4E | 1.14 | 800-02070-04 |
PA-8E | 1.14 | 800-02069-04 |
PA-H | 1.17 | 800-02747-06 |
PA-2H | 1.3 | 800-03306-02 |
PA-A3-E3 | 2.0 | 800-02602-04 |
PA-A3-T3 | 2.0 | 800-02600-04 |
The Signal-to-Noise Ratio (SNR) output in the cable show controller command is supported only on the MC11C, MC12C, MC14C, and MC16C cable modem cards. Although this command might display SNR statistics for some versions of the MC16B cable modem card, that output should be disregarded.
Because the Cisco IOS Release 12.0(7)XR2 permits multiple groups (in TACACS+RADIUS, and a textual name) you must be sure to use the group keyword in your AAA configuration command lines. It is possible to configure AAA behavior without the group keyword in 12.0(7)XR2 for backward-compatibility reasons, however, the group keyword will always show up in the generated configuration.
Not all port adapters are supported with the wireless modem card. The HSSI, 10BaseT Ethernet, 100BaseT Ethernet, and serial Frame Relay interfaces are fully supported. The ATM, POS, and Gigabit Ethernet port adapters were not supported with the wireless modem card at the time the Release 12.0(7)XR2 software was released.
The cable that supplies -48VDC to the wireless system's power feed panel should not exceed 3 meters in length.
The following sections contain important notes about Cisco IOS Release 12.0(7)XR2 that apply to Cisco uBR7200 series universal broadband routers.
The MC11C, MC12C, MC14C, MC16C, and MC16S modem cards deliver +42 dBmV output power to the IF-to-RF upconverter at the CATV headend, which is 10-dB greater than previously released modem cards. Certain upconverters require a 10-dB attenuator in the downstream signal between one of these modem cards and the upconverter to avoid overloading the upconverter input, which would interfere with downstream transmissions, particularly in the 256QAM mode. See the Downstream IF Power-Level Adjustment Notice on CCO and the Documentation CD-ROM for more information on which upconverters require installing the attenuator.
When more than one Outdoor Unit (ODU) is powered by a single DC power supply, applying or removing power to one ODU could create transients on the DC line that would interfere with the operation of the other ODUs using that same power supply. (This problem is being tracked in caveat CSCdp12605.)
Be aware that when configuring a routing protocol on a Cisco uBR7200 series cable interface, the Cisco IOS software must reset the interface to enable the change. This in turn causes all cable modems on that particular downstream to reinitialize, potentially interfering with data transmission on that downstream. Therefore, you should use the interface configuration commands, such as router rip, on a cable interface only when a minimum of subscribers would be affected.
The original MC11 modem card (MC11 FPGA) is supported only on Cisco uBR7223 and uBR7246 routers that are using the NPE-150 or NPE-200 processor cards. If the router is using a later processor card, such as the NPE-300, the MC11 FPGA is not supported and current modem cards such as the MC11C card must be used instead.
The Cisco uBR7200 series universal broadband router must have a minimum of 64 MB of DRAM to run all Cisco IOS Release 12.0(7)XR2 images.
The uBR7200 series universal broadband routers support the following categories of MIBs:
The Cable-Specific MIBs and Deprecated MIBs are described in the following sections. For information on the SNMP standard MIBs and Cisco's platform and network-layer enterprise MIBs, see Cisco's MIB website at http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml.
Table 6 shows the cable-specific MIBs that are supported on the Cisco uBR7200 series universal broadband routers, including both DOCSIS-specific MIBs and SNMP standard MIBs common across most of Cisco's router platforms. The table also provides a brief description of each MIB's contents and the Cisco IOS Software Release in which the MIB was initially functional---earlier releases might have had unsupported prototype versions of the MIB; later releases might have added new attributes and functionality. Because of interdependencies, the MIBs must be loaded in the order given in the table.
| MIB Filename | Description | Release |
|---|---|---|
This module specifies the Structure of Management Information (SMI) for SNMPv2, as defined in RFC 1902. | 11.3T | |
This module defines the textual conventions as specified in pages 4, 10-11 of RFC 854. | 11.3T | |
This module specifies the Structure of Management Information (SMI) for Cisco's enterprise MIBs. | 11.3T | |
This module defines the textual conventions used in Cisco's enterprise MIBs. | 11.3T | |
This module describes generic objects for the Layer 3 network interface sublayers. This MIB is an updated version of MIB-II's if table, and incorporates the extensions defined in RFC 1229. | 11.3T | |
This module describes the DOCSIS-based Radio Frequency (RF) interfaces in cable modems and cable modem termination systems, as defined in RFC 2670. | 11.3(4)NA | |
This module describes the spectrum management flap list attributes. | 12.0(5)T1 | |
This module---available in an SNMPv2 version only---describes the attributes for the DOCSIS-specified Baseline Privacy Interface (BPI) on cable modems and the CMTS. | 11.3(11)NA | |
This module extends the DOCSIS standard RFI MIB (DOCS-IF-MIB) with Cisco-specific extensions, such as QoS attributes and connection status and other information regarding the cable modems and CPE devices supported by the CMTS. | 11.3(9)NA | |
This module contains the textual conventions for the other wireless modem card MIB modules. | 12.0(7)XR | |
This module is the Cisco Wireless Radio Experimental MIB for the Cisco wireless modem card and related subsystem. | 12.0(7)XR | |
This module is the MIB Module for the Cisco Wireless Radio Point to Point interface specification. | 12.0(7)XR | |
This module is the MIB Module for the Baseline Privacy Interface (BPI) as implemented on the wireless modem card. This is a variation of the DOCSIS BPI MIB that has been customized for the point-to-point wireless modem subsystem. | 12.0(7)XR |
A number of older Cisco-provided MIBs have been replaced with more scalable, standardized MIBs; the MIBs have filenames that start with "OLD" and first appeared in Cisco IOS Release 10.2. The functionality of these MIBs has already been incorporated into replacement MIBs, but the old MIBs are still present to support existing Cisco IOS products or NMS applications. However, because the deprecated MIBs will be removed from support in the future, you should update your network management applications and scripts to refer to the table names and attributes that are found in the replacement MIBs.
Table 7 shows the deprecated MIBs and their replacements. In most cases, SNMPv1 and SNMPv2 replacements are available, but some MIBs are available only in one version. A few of the deprecated MIBs do not have replacement MIBs; support for these MIBs will be discontinued when Cisco IOS software discontinues support for the corresponding feature set.
| Deprecated MIB | Replacement MIBs | |
|---|---|---|
| SNMPv1 MIB | SNMPv2 MIB | |
| ||
OLD-CISCO-CPU -MIB |
| |
|
| |
|
| |
| ||
(Compilation of other OLD* MIBS) | ||
|
| |
|
| |
Because of changes in handling the MAC address between Cisco IOS Software Releases 11 and 12.0, you must clear the Address Resolution Protocol (ARP) tables after upgrading from Cisco IOS Software Release 11 to Release 12.0(7)XR2. Failure to do this could cause RF CPE device registration to fail during time of day (ToD) provisioning. Clearing the ARP tables must be done on all routers and ToD servers connected to the Cisco uBR7200 series cable router.
Online insertion and removal (OIR) is supported only for the same version and model of a modem card (for example, replacing an MC16C modem card with another MC16C modem card). If you are upgrading from one version of a modem card (such as MC16B) to a newer version (such as MC16S), hot-swapping does not preserve the card's configuration because the Cisco IOS software recognizes that the new card is not identical to the old one.
You can use OIR to hot-swap an older version of a modem card with a newer one but you must then reload the card's configuration from NVRAM to restore the modem card to operational status.
When the Cisco uBR7223 or Cisco uBR7246 router first powers on, messages similar to the following can appear immediately after the boot image loads and initializes:
%PA-2-UNDEFPA: Undefined Port Adapter type 248 in bay 3 %PA-2-UNDEFPA: Undefined Port Adapter type 248 in bay 4 %PA-2-UNDEFPA: Undefined Port Adapter type 243 in bay 5 %PA-3-DEACTIVATED: port adapter in bay [3] powered off. %PA-3-DEACTIVATED: port adapter in bay [4] powered off. %PA-3-DEACTIVATED: port adapter in bay [5] powered off. %SYS-6-BOOT_MESSAGES: Messages above this line are from the boot loader.
The exact number of messages depends on the number of port adapters and cable modem cards installed in the Cisco uBR7200 series chassis. The messages about undefined port adapters can be safely ignored because the boot loader is not expected to recognize the cable modem cards. Instead, the cable modem cards are activated by the Cisco IOS software image, which the boot loader loads immediately after displaying the above messages.
This section lists the caveats that describe potentially unexpected behavior in Cisco IOS Release 12.0(7)XR2. Severity 1 caveats are the most serious caveats; severity 2 caveats are less serious.
For information on additional caveats in Cisco IOS Release 12.0 T, see Caveats for Cisco IOS Release 12.0 T document.
All caveats in Release 12.0 are also in Release 12.0 T. For information on caveats in Cisco IOS Release 12.0, see Caveats for Cisco IOS Release 12.0 document.
This section describes possibly unexpected behavior by Release 12.0(7)XR2.
| Caution Do not use the clear arp command on the Cisco uBR7200 series router for this purpose; it will terminate connectivity for all PCs serviced by that router until the PC performs a DHCP release/renew request or reboots. (The router must be in source-verify mode; see the cable source-verify command.) |
This section describes possibly unexpected behavior by the wireless modem card and wireless subsystem in Release 12.0(7)XR2, which is the first release that supports the wireless modem card.
(a) Measure the total AGC attenuation of the system with the radio histogram totalGain <n> 1 2 50 coll 10 per 10 sum true command, where <n> is the antenna number (1 or 2).
(b) Find the average total gain value in the displayed histogram data.
(c) Determine the currently configured cable loss for the radio interface by giving the show run command and finding the radio cableloss command for that radio interface.
(d) Calculate the estimated received signal strength (in dBm) with the following calculation:
estimated received signal strength = ((average total gain) / 2) - 96 dBm
| Caution All Cisco IOS Release 12.0(7)XR software images prior to release 12.0(7)XR2 are being deferred. |
This section describes possibly unexpected behavior by Release 12.0(7)XR1. These caveats are resolved in Release 12.0(7)XR2.
| Caution All Cisco IOS Release 12.0(7)XR software images prior to release 12.0(7)XR2 are being deferred. |
This section describes possibly unexpected behavior by Release 12.0(7)XR. These caveats are resolved in Release 12.0(7)XR1.
%UBR7200-3-SPIERRW (Cable5/0): SPI PENDING WRITE ERROR:
This section describes possibly unexpected behavior by Release 12.0(5)T1. Unless otherwise noted, these caveats apply to all 12.0 releases up to and including 12.0(5)T1. For additional caveats applicable to Cisco IOS Release 12.0 T, see the caveats sections for newer 12.0 releases. The caveats for newer releases precede this section.
All the caveats listed in this section are resolved in Release 12.0(7)XR2.
The following sections describe the documentation available for the Cisco uBR7200 series universal broadband routers. These documents consist of hardware and software installation guides, Cisco IOS configuration and command references, system error messages, feature modules, and other documents.
Documentation is available as printed manuals or electronic documents, except for feature modules, which are available online on CCO and the Documentation CD-ROM.
Use these release notes with these documents:
The following documents are specific to Release 12.0 and are located on CCO and the Documentation CD-ROM:
The following platform-specific documents are available.
These documents are available for the Cisco uBR7200 series universal broadband routers on CCO and the Documentation CD-ROM:
On CCO:
Technical Documents: Documentation Home Page: Broadband/Cable Solutions: Cisco uBR7200 Series Universal Broadband Routers
On the Documentation CD-ROM:
Cisco Product Documentation: Broadband/Cable Solutions: Cisco uBR7200 Series Universal Broadband Routers
These documents are available for the wireless modem card (and other components of the Cisco WT2700 Wireless Technology Suite) on CCO and the Documentation CD-ROM:
On CCO:
Technical Documents: Documentation Home Page: Cisco Product Documentation: Broadband/Wireless Solutions
On the Documentation CD-ROM:
Cisco Product Documentation: Broadband/Wireless Solutions
The documentation for the Cisco uBR900 series cable access routers are available on CCO and the Documentation CD-ROM at the following locations:
On CCO:
Technical Documents: Documentation Home Page: Broadband/Cable Solutions: Cisco uBR900 Series Cable Access Routers
On the Documentation CD-ROM:
Cisco Product Documentation: Broadband/Cable Solutions: Cisco uBR900 Series Cable Access Routers
Feature modules describe new features supported by Cisco IOS Release 12.0 T and are updates to the Cisco IOS documentation set. A feature module consists of a brief overview of the feature, benefits, configuration tasks, and a command reference. As updates, the feature modules are available online only. Feature module information is incorporated in the next printing of the Cisco IOS documentation set.
On CCO:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.0: New Feature Documentation
On the Documentation CD-ROM:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.0: New Feature Documentation: New Features in Release 12.0 T
The Cisco IOS software documentation set consists of the Cisco IOS configuration guides, Cisco IOS command references, and several other supporting documents, which are shipped with your order in electronic form on the Documentation CD-ROM---unless you specifically order the printed versions.
Each module in the Cisco IOS documentation set consists of two books: a configuration guide and a corresponding command reference. Chapters in a configuration guide describe protocols, configuration tasks, and Cisco IOS software functionality, and contain comprehensive configuration examples. Chapters in a command reference provide complete command syntax information. Use each configuration guide with its corresponding command reference.
On CCO and the Documentation CD-ROM, two master hot-linked documents provide information for the Cisco IOS software documentation set: configuration guides and command references.
On CCO:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.0: Configuration Guides and Command References
On the Documentation CD-ROM:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.0: Configuration Guides and Command References: Cisco IOS Interface Configuration Guide or Cisco IOS Interface Command Reference
Table 8 describes the contents of the Cisco IOS Release 12.0 software documentation set, which is available in electronic form, and also in printed form upon request.
On CCO:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.0: Configuration Guides and Command References
On the Documentation CD-ROM:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.0: Configuration Guides and Command References
| Books | Chapter Topics |
|---|---|
| Configuration Fundamentals Overview |
| Transparent Bridging |
| Dial-In Port Setup |
| Interface Configuration Overview |
| IP Addressing |
| AppleTalk |
| Apollo Domain |
| AAA Security Services |
| Switching Paths for IP Networks |
| ATM |
| Voice over IP |
| Classification |
|
|
For service and support for a product purchased from a reseller, contact the reseller, who offers a wide variety of Cisco service and support programs described in "Service and Support" of Cisco Information Packet shipped with your product.
For service and support for a product purchased directly from Cisco, use CCO.
If you have a CCO login account, you can access the following URL, which contains links and helpful tips on configuring your Cisco products:
http://www.cisco.com/kobayashi/serv_tips.shtml
This URL is subject to change without notice. If it changes, point your web browser to CCO and click on this path: Products & Technologies: Products: Technical Tips.
The following sections are provided from the Technical Tips page:
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Available 24 hours a day, 7 days a week, CCO provides a wealth of standard and value-added services to Cisco's customers and business partners. CCO services include product information, product documentation, software updates, release notes, technical tips, the Bug Navigator, configuration notes, brochures, descriptions of service offerings, and download access to public and authorized files.
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You can reach CCO in the following ways:
For a copy of CCO's Frequently Asked Questions (FAQ), contact cco-help@cisco.com. For additional information, contact cco-team@cisco.com.
Cisco documentation and additional literature are available in a CD-ROM package that ships with your product. The Documentation CD-ROM, a member of the Cisco Connection Family, is updated monthly. Therefore, it might be more current than printed documentation. To order additional copies of the Documentation CD-ROM, contact your local sales representative or call customer service. The CD-ROM package is available as a single package or as an annual subscription. You can also access Cisco documentation on the World Wide Web at http://www.cisco.com, http://www-china.cisco.com, or http://www-europe.cisco.com.
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Posted: Fri Mar 3 14:07:26 PST 2000
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