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February 8, 1999
These release notes describe new features and significant software components for the Cisco uBR7200 series universal broadband routers that support Cisco IOS Release 12.0, up to and including Release 12.0(3). These release notes are updated as needed to accommodate new memory requirements, new features, new hardware support, software platform deferrals, microcode or modem code changes, related document changes, and any other important changes.
For a list of the software caveats that apply to Release 12.0, refer to the Caveats for Cisco IOS Release 12.0 document that accompanies these release notes. The caveats document is updated for every maintenance release, and is location on Cisco Connection Online (CCO) and the Documentation CD-ROM. For more information, refer to the "Caveats" section of these release notes.
Use these release notes with the cross-platform Release Notes for Cisco IOS Release 12.0 located on Cisco Connection Online (CCO) and the Documentation CD-ROM.
These release notes discuss the following topics:
This section contains information on the Cisco uBR7200 series universal broadband routers.
The Cisco data-over-cable products---the Cisco uBR7223 universal broadband router, the Cisco uBR7246 universal broadband router, and the Cisco uBR904 cable modem---are compliant with Multimedia Cable Network Partners, Ltd. (MCNS) specifications. MCNS is a consortium of cable television companies whose goal is to create standards for interoperable data over cable systems.
For more information on the Cisco uBR7200 series universal broadband routers, refer to the "New and Changed Information" section.
The Cisco uBR7223 is a cost-effective, scalable interface between subscriber cable modems and the backbone data network, and is designed specifically for small to medium-sized network installations. The Cisco uBR7223 is based on the Cisco uBR7246.
The Cisco uBR7246 is the first of Cisco's data-over-cable products designed to allow two-way transmission of digital data over hybrid fiber coaxial (HFC) cable. The Cisco uBR7246 supports Internet Protocol (IP) routing with a wide variety of protocols and any combination of Ethernet, Fast Ethernet, High-Speed Serial Interface (HSSI), and Asynchronous Transfer Mode (ATM) media. The Cisco uBR7246 universal broadband router gives cable operators a cost-effective, scalable, and feature-rich interface between subscriber cable modems and the backbone data network.
The Cisco uBR904 cable modem is the subscriber unit, a key component within a cable data system. This subscriber unit functions as an interface between the subscriber's personal computer and the cable operator's network within the subscriber's small office or home office.
For more information on Cisco uBR904, refer to the "Related Documentation" section.
This section describes the system requirements for Release 12.0 and includes the following sections:
Table 1 describes the memory requirements for the Cisco uBR7200 series for Release 12.0. Cisco uBR7200 series routers are shipped with a 16- or 20-MB Flash memory card.
| Feature Set | Image Name | Required Flash Memory | Required DRAM Memory | Runs From | Feature Status |
|---|---|---|---|---|---|
MCNS Two-Way | ubr7200-p-mz | 16 MB Flash | 32 MB DRAM | RAM | Added in 12.0(1) |
Cisco IOS Release 12.0 supports the Cisco uBR7200 series universal broadband routers:
For detailed descriptions of the new hardware features for Release 12.0, refer to the cross-platform Release Notes for Cisco IOS Release 12.0 .
Cisco IOS Release 12.0 supports the Cisco uBR7200 universal broadband routers and the MC11 cable modem cards installed in the Cisco uBR7200 series routers. The MC11 cable modem cards provide connection to the hybrid fiber-coaxial network, offering one upstream port and one downstream port. The cable modem card slots are numbered from top to bottom: cable modem card slot 3, slot 4, slot 5, and slot 6.
| Interface, Network Module, or Data Rate | Product Number1 | Description | Platforms Supported |
|---|---|---|---|
| ATM | PA-A1-OC3SMI | 1-port ATM OC-3c/STM-1 single-mode intermediate reach port adapter | Cisco uBR7200 series |
PA-A1-OC3MM | 1-port ATM OC-3c/STM-1 multimode port adapter | Cisco uBR7200 series | |
PA-A2-4E1XC-OC3SM | 5-port ATM CES2 (4 E1 120-ohm CBR3 ports and 1 OC-3 ATM single-mode port) port adapter | Cisco uBR7246 only | |
PA-A2-4E1XC-E3ATM | 5-port ATM CES2 (4 E1 120-ohm CBR3 ports and 1 E3 ATM port) port adapter | Cisco uBR7246 only | |
PA-A2-4T1C-OC3SM | 5-port ATM CES2 (4 T1 CBR3 ports and 1 OC-3 ATM single-mode port) port adapter | Cisco uBR7246 only | |
PA-A2-4T1C-T3ATM | 5-port ATM CES2 (4 T1 CBR3 ports and 1 T3 ATM port) port adapter | Cisco uBR7246 only | |
| Ethernet | PA-4E | 4-port Ethernet 10BaseT port adapter | Cisco uBR7200 series |
PA-8E | 8-port Ethernet 10BaseT port adapter | Cisco uBR7200 series | |
PA-FE-TX | 1-port 100BaseTX Fast Ethernet port adapter | Cisco uBR7200 series | |
PA-FE-FX | 1-port 100BaseFX Fast Ethernet port adapter | Cisco uBR7200 series | |
| High Speed Serial Interfaces (HSSI) | PA-H | 1-port HSSI port adapter | Cisco uBR7200 series |
| Packet-Over-SONET (POS) | PA-POS-OC3SML | 1-port POS OC-3 single-mode, long reach port adapter | Cisco uBR7200 series |
PA-POS-OC3SMI | 1-port OC3 single-mode, intermediate reach port adapter | Cisco uBR7200 series | |
PA-POS-OC3MM | 1-port POS OC3 multimode port adapter | Cisco uBR7200 series | |
| Serial | PA-4T+ | 4-port synchronous serial port adapter | Cisco uBR7200 series |
PA-8T-232 | 8-port EIA/TIA-232 synchronous serial port adapter | Cisco uBR7200 series | |
PA-8T-V35 | 8-port V.35 synchronous serial port adapter | Cisco uBR7200 series | |
PA-8T-X21 | 8-port X.21 synchronous serial port adapter | Cisco uBR7200 series | |
PA-4E1G-75 | 4-port unbalanced (75-ohm) E1-G.703/G.704 synchronous serial port adapter | Cisco uBR7200 series | |
PA-4E1G-120 | 4-port balanced (120-ohm) E1-G.703/G.704 synchronous serial port adapter | Cisco uBR7200 series |
| 1Refer to CCO or the Documentation CD-ROM for the most current list of supported port adapters. 2CES = circuit emulation services. 3CBR = constant bit rate. |
To determine the version of Cisco IOS software currently running on the Cisco uBR7200 series router, log into the router and use the show version EXEC command. The following is sample output from the show version command. The version number is indicated on the second line as shown below:
Cisco Internetwork Operating System Software IOS (tm) 7246 Software (C7246-JS-L), Version 12.0(3), RELEASE SOFTWARE
Additional command output lines include more information, such as processor revision numbers, memory amounts, hardware IDs, and partition information.
For information about upgrading to a new software release, refer to the Cisco IOS Software Release 12.0 Upgrade Paths and Packaging Simplification product bulletin located at the following URL: http://www.cisco.com/kobayashi/library/12.0/120MigrPaths.pdf
Alternatively, if you do not have an account on CCO, you can access general information about upgrading to a new software release by referring to the Cisco IOS Software Release 11.3 Upgrade Paths and Packaging Simplification (#703: 12/97) product bulletin located on CCO.
On CCO, click on this path:
Service & Support: Product Bulletins: Software
Under Cisco IOS 12.0, click on Cisco IOS Software Release 11.3 Upgrade Paths (#703: 12/97). This product bulletin does not contain information specific to Cisco IOS Release 12.0 but provides generic upgrade information that may apply to Cisco IOS Release 12.0
The Cisco IOS software is packaged in feature sets consisting of software images, depending on the platform. Each feature set contains a specific set of Cisco IOS features.
Table 3 lists the Cisco IOS software feature sets available for the Cisco uBR7200 series in Cisco IOS Release 12.0(3).
| Feature Set | Software Image | Feature Set Matrix Term | Software Image |
|---|---|---|---|
MCNS Two-Way | MCNS Two-Way | Basic1 | ubr7200-p-mz |
| 1This feature is offered in the basic feature set. |
Table 4 lists the features and feature sets supported by the Cisco IOS Release 12.0 for the Cisco uBR7200 series. Table 4 uses the following conventions to identify features:
| Features | MCNS Two-Way Feature Set |
|---|---|
| Internet | |
| Yes |
| IP Routing | |
| Yes |
| Yes |
| Yes |
| Yes |
| Yes |
| Management | |
| Yes |
| Yes |
| Yes |
| Yes |
| Yes |
| Yes |
| Yes |
| Yes |
| Yes |
| Yes |
| Multimedia | |
| Yes |
| Yes |
| Yes |
| Yes |
| Security | |
| Yes |
| Yes |
| Yes |
| Yes |
| Yes |
| Yes |
| Yes |
| Yes |
| Switching | |
| Yes |
| Yes |
| WAN Optimization | |
| Yes |
| Yes |
| WAN Services | |
| Yes |
| Yes |
| Yes |
| Yes |
| Yes |
| Yes |
| Yes |
| Yes |
| Yes |
| Yes |
| Yes |
| Yes |
Optional feature set licenses for the Cisco uBR7246 universal broadband routers are as follows:
This section lists some of the features available for the Cisco uBR7200 series in Cisco IOS Release 12.0 software. For more information about these features, refer to the cross-platform Release Notes for Cisco IOS Release 12.0 located on CCO and the Documentation CD-ROM.
This section contains important information about using Cisco IOS Release 12.0 software that might apply to Cisco uBR7200 series universal broadband routers.
The cable spectrum-group shared command was documented in the feature module Cisco uBR7246 Universal Broadband Router Enhancements, released with Cisco IOS Release 11.3(5)NA. This command is not supported on the Cisco uBR7246 at this time, and has not been supported in any previous release. It is scheduled to be supported beginning with Release 12.0(4)T.
cable spectrum-group shared
To specify that the upstream ports share the same spectrum, use the cable spectrum-group shared global configuration command. Use the no form of this command to delete the spectrum group.
This is not currently supported. In the meantime, if it is necessary to configure two upstream channels to share the same spectrum-group but have different frequencies, they can be configured manually.
As an example, you have two nodes with two upstream channels per node. Node one carries US0 and US1; node two carries US2 and US3. Assume also that you are allocated 25 MHz to 35 MHz for the two upstreams combined.
First, set up two spectrum groups:
cable spectrum-group 1 band 25000000 30000000 cable spectrum-group 2 band 30000000 35000000
Then, allocate one channel from each node to each spectrum group:
cable us0 spectrum-group 1 cable us1 spectrum-group 2 cable us2 spectrum-group 1 cable us3 spectrum-group 2
Certain versions of Cisco IOS software may fail or hang when they receive invalid User Datagram Protocol (UDP) packets sent to their syslog ports (port 514). At least one commonly-used Internet scanning tool generates packets, which can cause such problems. This fact has been published on public Internet mailing lists, which are widely read both by security professionals and by security crackers. This information should be considered in the public domain.
Attackers can cause Cisco IOS devices to repeatedly fail and reload, resulting in a completely disabled Cisco IOS device that will need to be reconfigured by its administrator. Some Cisco IOS devices have been observed to hang instead of failing when attacked. These devices do not recover until they are manually restarted by reset or power cycling. An administrator must personally visit an attacked, hung device to restart it, even if the attacker is no longer actively sending any traffic. Some devices have failed without providing stack traces; some devices may indicate that they were "restarted by power-on," even when that is not the case.
Assume that any potential attacker is likely to know that existence of this problem and the ways to exploit it. An attacker can use tools available to the public on the Internet and does not need to write any software to exploit the vulnerability. Minimal skill is required and no special equipment is required.
Despite Cisco specifically inviting such reports, Cisco has received no actual reports of malicious exploitation of this problem.
This vulnerability notice was posted on Cisco's World Wide Web site:
http://www.cisco.com/warp/public/770/iossyslog-pub.shtml
This information was also sent to the following e-mail and Usenet news recipients:
Vulnerable devices and software versions are specified in Table 5, Affected and Repaired Software Versions. Affected versions include Releases 11.3 AA, 11.3 DB, and all 12.0 versions (including 12.0 mainline, 12.0 S, 12.0 T, and any other regular released version whose number starts with 12.0), up to the repaired releases listed in Table 5. Cisco is correcting the problem in certain special releases and will correct it in future maintenance and interim releases. See Table 5, Affected and Repaired Software Versions for details. Cisco intends to provide fixes for all affected IOS variants.
No particular configuration is needed to make a Cisco IOS device vulnerable. It is possible to filter out attack traffic by using access lists. See the "Workarounds" section for techniques. However, except at Internet firewalls, the appropriate filters are not common in customer configurations. Carefully evaluate your configuration before assuming that any filtering you have protects you against this attack.
The most commonly used or asked-about products are listed below. If you are unsure whether your device is running Cisco IOS software, log in to the device and issue the show version command. Cisco IOS software will identify itself simply as "IOS" or "Internetwork Operating System Software". Other Cisco devices will not have the show version command, or they will identify themselves differently in their output. The most common Cisco devices that run Cisco IOS software include the following:
Affected software versions, which are relatively new, are not necessarily available on every device listed above. If you are not running Cisco IOS software, you are not affected by this problem.
The following Cisco devices are not affected:
This vulnerability has been assigned Cisco bug ID CSCdk77426.
Cisco offers free software updates to correct this vulnerability for all affected customers---regardless of their contract status. However, because this vulnerability information has been disseminated by third parties, Cisco has released this notice before updates are available for all software versions. Table 4 gives Cisco's projected fix dates.
Make sure your hardware had adequate RAM to support the new software before installing it. The amount of RAM is seldom a problem when you upgrade within a major release (say, from 11.2(11)P to 11.2(17)P), but it is often a factor when you upgrade between major releases (say, from 11.2 P to 11.3 T).
Because fixes will be available for all affected releases, this vulnerability will rarely, if ever, require an upgrade to a new major release. Cisco recommends very careful planning for any upgrade between major releases. Make certain no known bugs will prevent the new software from working properly in your environment.
Further upgrade planning assistance is available on Cisco's World Wide Web site at:
If you have service contracts you can obtain new software through your regular update channels (generally via Cisco's World Wide Web site). You can upgrade to any software release, but you must remain within the boundaries of the feature sets you have purchased.
If you don't have service contracts, you can upgrade to obtain only the bug fixes; free upgrades are restricted to the minimum upgrade required to resolve the defects. In general, you will be restricted to upgrading within a single row of Table 5, except when no upgrade within the same row is available in a timely manner. Obtain updates by contacting one of the following Cisco Technical Assistance Centers (TACs):
Give the URL of this notice (http://www.cisco.com/warp/public/770/iossyslog-pub.shtml) as evidence for a free update. Non-contract customers must request free updates through the TAC. Please do not contact either "psirt@cisco.com" or "security-alert@cisco.com" for software updates.
You can work around this vulnerability by preventing any affected Cisco IOS device from receiving or processing UDP datagrams addressed to its port 514. This can be done either using packet filtering on surrounding devices, or by using input access list filtering on the affected IOS device itself.
If you use an input access list, apply that list to all interfaces to which attackers may be able to send datagrams. Interfaces include---not only physical LAN and WAN interfaces---but virtual subinterfaces of those physical interfaces, as well as virtual interfaces and interface templates corresponding to GRE, L2TP, L2F, and other tunneling protocols.
The input access list must block traffic destined for UDP port 514 at any of the Cisco IOS device's own IP addresses, as well as at any broadcast or multicast addresses on which the Cisco IOS device may be listening. Be sure to block both old-style "all-zeros" broadcasts and new-style "all-ones" broadcasts. It is not necessary to block traffic being forwarded to other hosts---only traffic actually addressed to the Cisco IOS device is of interest.
No single input access list works in all configurations. Know the effect of your access list in your specific configuration before activating it.
The following example shows a possible access list for a three-interface router, along with the configuration commands needed to apply the list. The example assumes input filtering is not needed, other than as a workaround for this problem:
! Deny all multicasts, and all unspecified-net broadcasts, to port 514 access-list 101 deny udp any 224.0.0.0 31.255.255.255 eq 514 ! Deny old-style unspecified-net broadcasts access-list 101 deny udp any host 0.0.0.0 eq 514 ! Deny network-specific broadcasts. This example assumes that all of ! the local interfaces are on the class B network 172.16.0.0, subnetted ! everywhere with mask 255.255.255.0. This will differ from network ! to network. Note that we block both new-style and old-style broadcasts. access-list 101 deny udp any 172.16.0.255 0.0.255.0 eq 514 access-list 101 deny udp any 172.16.0.0 0.0.255.0 eq 514 ! Deny packets sent to the addresses of our own network interfaces. access-list 101 deny udp any host 172.16.1.1 eq 514 access-list 101 deny udp any host 172.16.2.1 eq 514 access-list 101 deny udp any host 172.16.3.3 eq 514 ! Permit all other traffic (default would be to deny) access-list 101 permit ip any any ! Apply the access list to the input side of each interface interface ethernet 0 ip address 172.16.1.1 255.255.255.0 ip access-group 101 in interface ethernet 2 ip address 172.16.2.1 255.255.255.0 ip access-group 101 in interface ethernet 3 ip address 172.16.3.3 255.255.255.0 ip access-group 101 in
Listing all possible addresses---especially all possible broadcast addresses---to which attack packets may be sent is complicated. If you do not need to forward any legitimate syslog traffic received on an interface, you can block all syslog traffic arriving on that interface. Remember that blocking will affect traffic routed through the Cisco IOS device as well as traffic destined to the device; if the IOS device is expected to forward syslog packets, you will have to do the detailed filtering. Because input access lists impact system performance, install them with caution---especially on systems running very near their capacity.
Many Cisco software images have been or will be specially reissued to correct this vulnerability. For example, regular released version 12.0(2) is vulnerable, as are interim versions 12.0(2.1) through 12.0(2.3). The first fixed interim version of 12.0 mainline software is 12.0(2.4). However, a special release, 12.0(2a), contains only the fix for this vulnerability and does not include any other bug fixes from later 12.0 interim releases.
If you are running 12.0(2) and want to fix this problem without risking possible instability presented by installing the 12.0(2.4) interim release, you can upgrade to 12.0(2a). Release 12.0(2a) is a "code branch" from the 12.0(2) base, which will merge back into the 12.0 mainline at 12.0(2.4).
Special releases, like 12.0(2a), are one-time, spot fixes, and they will not be maintained. Thus, the upgrade path from12.0(2a) is to 12.0(3).
Table 5 specifies information about affected and repaired software versions.
| Cisco IOS Major Release | Description | Special Fix1 | First Fixed Interim Release2 | Fixed Maintenance Release3 |
|---|---|---|---|---|
| Unaffected Releases | ||||
11.2 and earlier---all variants | Unaffected early releases (no syslog server) | Unaffected | Unaffected | Unaffected |
11.3, 11.3 T, 11.3 DA, 11.3 MA, 11.3 NA, 11.3 WA, 11.3(2)XA | 11.3 releases without syslog servers | Unaffected | Unaffected | Unaffected |
| Releases based on 11.3 | ||||
11.3 AA | 11.3 early deployment for AS58xx | 11.3(7)AA2, 8-JAN-19994 | 11.3(7.2)AA | 11.3(8)AA, 15-FEB-1999 |
11.3 DB | 11.3 for Cisco NRP routing blade in Cisco 6400 xDSL DSLAM |
|
| 11.3(7)DB2, 18-JAN-1999 |
| Releases based on 12.0 | ||||
12.0 | 12.0 Mainline | 12.0(2a), 8-JAN-1999 | 12.0(2.4) | 12.0(3), 1-FEB-1999 |
12.0 T | 12.0 new technology early deployment | 12.0(2a)T1, 11-JAN-1999 | 12.0(2.4)T | 12.0(3)T, 15-FEB-1999 |
12.0 S | ISP support; 7200, RSP, GSR |
| 12.0(2.3)S, 27-DEC-1998 | 12.0(2)S5, 18-JAN-1999 |
12.0 DB | 12.0 for Cisco 6400 universal access concentrator node switch processor (lab use) |
|
| 12.0(2)DB, 18-JAN-1999 |
12.0(1)W | 12.0 for Catalyst 8500 and LS1010 | 12.0(1)W5(5a) and 12.0(1a)W5(5b) (LS1010 platform only) | 12.0(1)W5(5.15) | 12.0(1)W5(6) (platform support for Catalyst 8540M will be in 12.0(1)W5(7)) |
12.0(0.6)W5 | One-time early deployment for CH-OC12 module in Catalyst 8500 series switches. | Unaffected; one-time release | Unaffected | Unaffected; general upgrade path is via 12.0(1)W5 releases. |
12.0(1)XA3 | Short-life release; merged to 12/0T at 12.0(2)T | Obsolete | Merged | Upgrade to 12.0(2a)T1 and/or to 12.0(3)T. |
12.0(1)XB | Short-life release for Cisco 800 series; merged to 12.0 T and 12.0 (3)T | 12.0(1)XB1 | Merged | Upgrade to 12.0(3)T. |
12.0(2)XC | Short-life release for new features in Cisco 2600, Cisco 3600, ubr7200, ubr900 series; merged to 12.0 T at 12.0(3)T. | 12.0(2)XC1, 7-JAN-1999 | Merged | Upgrade to 12.0(3)T |
12.0(2)XD | Short-life release for ISDN voice features; merged to 12.0 T at 12.0(3)T. | 12.0(2)XD1, 18-JAN-1999 | Merged | Upgrade to 12.0(3)T |
12.0(1)XE | Short-life release | 12.0(2)XE, 18-JAN-1999 | Merged | Upgrade to 12.0(3)T |
Older Cisco Management Information Bases (MIBs) will be replaced in a future release. OLD-CISCO-* MIBS are currently being migrated into more scalable MIBs, without affecting existing Cisco IOS products or NMS applications. Application developers should update from deprecated MIBs to the replacement MIBs as shown in the following table.
| Deprecated MIB | Replacement |
|---|---|
OLD-CISCO-APPLETALK-MIB | RFC1243-MIB |
OLD-CISCO-CHASSIS-MIB | ENTITY-MIB |
OLD-CISCO-CPUK-MIB | In Development |
OLD-CISCO-DECNET-MIB |
|
OLD-CISCO-ENV-MIB | CISCO-ENVMON-MIB |
OLD-CISCO-FLASH-MIB | CISCO-FLASH-MIB |
OLD-CISCO-INTERFACES-MIB | IF-MIB CISCO-QUEUE-MIB |
OLD-CISCO-IP-MIB |
|
OLD-CISCO-MEMORY-MIB | CISCO-MEMORY-POOL-MIB |
OLD-CISCO-NOVELL-MIB | NOVELL-IPX-MIB |
OLD-CISCO-SYS-MIB | (Compilation of other OLD* MIBS) |
OLD-CISCO-SYSTEM-MIB | CISCO-CONFIG-COPY-MIB |
OLD-CISCO-TCP-MIB | CISCO-TCP-MIB |
OLD-CISCO-TS-MIB |
|
OLD-CISCO-VINES-MIB | CISCO-VINES-MIB |
OLD-CISCO-XNS-MIB |
|
For information on caveats in Cisco IOS Release 12.0, refer to the Caveats for Cisco IOS Release 12.0 document. This caveats document lists severity 1 and 2 caveats for Release 12.0. Severity 1 caveats are the most serious caveats; severity 2 caveats are less serious. Caveats describe unexpected behavior or defects in Cisco IOS software releases.
This document is located on CCO and the Documentation CD-ROM.
The following sections describe the documentation available for the Cisco uBR7200 series routers. Typically, these documents consist of hardware installation guides, software installation guides, Cisco IOS configuration and command references, system error messages, and feature modules, which are updates to the Cisco IOS documentation. Documentation is available as printed manuals or electronic documents, except for feature modules, which are available online only.
The most up-to-date documentation can be found on CCO and the Documentation CD-ROM. These electronic documents might contain updates and modifications made after the hard copy documents were printed.
These release notes should be used in conjunction with the documents listed in these sections.
The following documents are specific to Release 12.0. They are located on CCO and the Documentation CD-ROM:
The documents listed in this section are available for the Cisco uBR7200 series. These documents are also available on CCO and the Documentation CD-ROM.
To access Cisco uBR7200 documentation on CCO, follow this path:
Service & Support: Documentation Home Page: Broadband/Cable Solutions: Cisco uBR7200 Series Universal Broadband Routers
To access Cisco uBR7200 documentation on the Documentation CD-ROM, follow this path:
Broadband/Cable Solutions: Cisco uBR7200 Series Universal Broadband Routers
The Cisco IOS software documentation set consists of the Cisco IOS configuration guides, Cisco IOS command references, and several other supporting documents. These documents are shipped with your order in electronic form on the Documentation CD-ROM, unless you specifically ordered 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. Each configuration guide can be used in conjunction with its corresponding command reference.
To reach these documentation modules on CCO, follow this path:
Service & Support: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.0: Cisco IOS Release 12.0 Configuration Guides and Command References
To reach these documentation modules on the Documentation CD-ROM, follow this path:
Cisco IOS Software Configuration: Cisco IOS Release 12.0: Cisco IOS Release 12.0 Configuration Guides and Command References
Table 7 details the contents of the Cisco IOS Release 12.0 software documentation set. The document set is available in electronic form, and also in printed form upon request.
To reach the Cisco IOS documentation set on CCO, follow this path:
Service & Support: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.0
To reach the Cisco IOS documentation set on the Documentation CD-ROM, follow this path:
Cisco IOS Software Configuration: Cisco IOS Release 12.0
| 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. Resellers offer a wide variety of Cisco service and support programs that are described in the "Service and Support" section of the 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. It 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:
Cisco Connection Online (CCO) is Cisco Systems' primary, real-time support channel. Maintenance customers and partners can self-register on CCO to obtain additional information and services.
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.
CCO serves a wide variety of users through two interfaces that are updated and enhanced simultaneously: a character-based version and a multimedia version that resides on the World Wide Web (WWW). The character-based CCO supports Zmodem, Kermit, Xmodem, FTP, and Internet e-mail, and it is excellent for quick access to information over lower bandwidths. The WWW version of CCO provides richly formatted documents with photographs, figures, graphics, and video, as well as hyperlinks to related information.
You can access 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, which 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.
If you are reading Cisco product documentation on the World Wide Web, you can submit comments electronically. Click Feedback in the toolbar and select Documentation. After you complete the form, click Submit to send it to Cisco. We appreciate your comments.
Posted: Thu Feb 18 15:53:49 PST 1999
Copyright 1989-1999©Cisco Systems Inc.