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Cisco 7100 Series VPN Router Product Overview

Cisco 7100 Series VPN Router Product Overview

This chapter provides physical and functional overviews of Cisco 7100 series routers and contains the following sections that describe router hardware, major components, and functions of hardware-related features:

Product Description

Cisco 7100 series routers are the newest members of the Cisco 7000 family. Cisco 7100 series routers support Virtual Private Networks (VPNs) and provide an integrated solution for security, quality of service (QoS), and service-level validation with emphasis on network technologies such as encryption and tunneling using IP Security (IPSec), Layer 2 Tunneling Protocol (L2TP), Generic Routing Encapsulation (GRE), and Layer 2 Forwarding (L2F) tunneling to ensure private transactions over public data networks. Cisco 7100 series routers are designed for the enterprise WAN edge market and customer premises equipment (CPE) for the service provider as shown in Figure 1-1.

Note For more information on VPN software features, refer to the Cisco 7100 Series VPN Configuration Guide, which ships with each router. The configuration guide is also available on the Documentation CD-ROM and on CCO.

Figure 1-1: Cisco 7100 Series Routers in a Virtual Private Network


Cisco 7100 series VPN routers offer specific hardware configurations optimized for VPN applications and network topologies and include the Cisco 7120 series and the Cisco 7140 series routers. The Cisco 7120 series comes in six different models, and the Cisco 7140 series comes in five different models. The models in both series are defined by WAN interface. Cisco 7100 series routers include the following:

Figure 1-2 shows the front of a Cisco 7100 series router. The front of the router is the same on both Cisco 7120 series and Cisco 7140 series routers. The specific model number is located on the back of each unit.


Figure 1-2: Cisco 7100 Series---Front View


Cisco 7100 series routers support the following features:

Figure 1-3 shows a Cisco 7120 series router from the back and Figure 1-4 shows a Cisco 7140 series router. All interface connections and LEDs are located at the back of the router.

The Cisco 7120 series and the Cisco 7140 series have the following components:


Figure 1-3: Cisco 7120 Series---Back View



Figure 1-4: Cisco 7140 Series---Back View


Cisco 7120 series routers have one power supply with one AC-input power receptacle; Cisco 7140 series routers have two power supplies with two AC-input power receptacles for power load-sharing and redundancy. A modular power cable connects each AC-input power supply to the site AC power source. The router's main power switch is located next to the AC-input power receptacles.

Note Cisco 7140 series routers will operate with power connected to either of the two power supplies. The second AC-input power supply simply enables power load-sharing and redundancy. There is no primary or secondary power supply for Cisco 7140 series routers.

We recommend powering the router from a 15A receptacle at the power source.

On the side of each chassis are two chassis ground receptacles that provide a chassis ground connection for a two-hole grounding lug. On the back of the chassis, there is a receptacle for electrostatic discharge (ESD) equipment. (See Figure 1-3 and Figure 1-4.)

Four internal fans draw cooling air into the chassis (back to front) and across internal components to maintain an acceptable operating temperature. There are four environmental sensors for monitoring the cooling air as it leaves the chassis. For more information on environmental monitoring, see the "Environmental Monitoring and Reporting Functions" section.

Caution To ensure the proper flow of cooling air across the internal components, make sure a blank port adapter is installed in an unoccupied port adapter slot. The product number for a blank port adapter is MAS-7100-PABLANK=.

The modular port adapter slides into the chassis slot and connects directly to the router; there are no internal cables to connect.

The port adapter, service module, fixed WAN interfaces, and fixed LAN interfaces connect to two Peripheral Component Interconnect (PCI) buses on the router's backplane that provide a path to packet I/O memory and the system processor. For more information, see the "Peripheral Component Interconnect Buses" section.

Cisco 7100 series routers can be installed on a tabletop or in an equipment rack. Rubber feet for tabletop installation are included in the accessory kit that shipped with your router. A rack-mount and cable-management kit is also standard equipment included with all Cisco 7100 series routers when they are shipped from the factory. The kit provides the hardware needed to mount the router in a standard 19- or 23-inch, four-post or telco-type equipment rack. The kit also provides the hardware necessary to manage the interface cables attached to the router. The product number for the rack-mount kit is ACS-7100-RMK=. Instructions for setting the router on a tabletop, installing the router in an equipment rack, and attaching the cable-management bracket are the same for all Cisco 7100 series models and are explained in Chapter 3, "Installing Cisco 7100 Series VPN Routers."

Cisco 7120 Series Overview

Cisco 7120 series routers consist of the following models:

Cisco 7120-4T1

The Cisco 7120-4T1 provides four channel-independent, synchronous serial ports that support full-duplex operation at T1 (1.544-Mbps) and E1 (2.048-Mbps) speeds. The Cisco 7120-4T1 provides the following features:

Figure 1-5 shows the back of the Cisco 7120-4T1. Access to the interfaces is located at the back of the router.


Figure 1-5: Cisco 7120-4T1---Back View


The Cisco 7120-4T1 WAN ports have one enabled (EN) LED and five status LEDs (each of the four ports has a set of status LEDs). After system initialization, the enabled LED goes on to indicate that all ports have been enabled for operation. If the initialization fails for any reason, the enabled LED will not go on. The LEDs are shown in Figure 1-6 and described in Table 1-1.


Figure 1-6: Cisco 7120-4T1 WAN Port LEDs



Table 1-1: Cisco 7120-4T1 LED Descriptions
LED Label Color State Function

EN

Green

On

Indicates ports are ready.

TD

Green

On

DTE---Transmit data out.

DCE---Transmit data in.

TC

Green

On

DTE---Transmit clock in.

DCE---Transmit clock in (TxCE).

RD

Green

On

DTE---Receive data in.

DCE---Receive data out.

RC

Green

On

DTE---Receive clock in.

DCE---Receive clock out.

LB/CD

Green

On

Indicates DTR1, DSR2, RTS3, CTS4, or DCD5 is active.

Green

Flashing

Indicates RTS, CTS, or DCD is sending and receiving data in half-duplex mode.

Yellow

On

Indicates local loop or internal loop active.

1DTR = Data Terminal Ready.
2DSR = Data Set Ready.
3RTS = Request To Send.
4CTS = Clear To Send.
5DCD = Data Carrier Detect.

Cisco 7120-T3

The Cisco 7120-T3 provides one high-speed, synchronous serial port that supports full-duplex operation at T3 (45-Mbps) speeds. The Cisco 7120-T3 provides the following features:

Figure 1-7 shows the back of the Cisco 7120-T3. Access to the interfaces is located at the back of the router.


Figure 1-7: Cisco 7120-T3---Back View


The Cisco 7120-T3 WAN port has one enabled LED and six uplink port status LEDs. After system initialization, the enabled LED goes on to indicate that the port has been enabled for operation. If the initialization fails for any reason, the enabled LED will not go on. The LEDs are shown in Figure 1-8 and described in Table 1-2.


Figure 1-8: Cisco 7120-T3 WAN Port LEDs



Table 1-2: Cisco 7120-T3 LED Descriptions
LED Label Color State Function

EN

Green

On

Indicates the port is ready.

RCLK

Green

On

Indicates a receive clock has been detected.

FERF

Yellow

On

Indicates the framer detected far-end receive failure.

RL

Yellow

On

Indicates the port is in remote loopback mode.

AIS

Yellow

On

Indicates the framer detected an alarm indication signal.

OOF

Yellow

On

Indicates the framer detected out of frame.

LL

Yellow

On

Indicates the port is in local loopback mode.

Cisco 7120-E3

The Cisco 7120-E3 provides one high-speed, synchronous serial port that supports full-duplex operation at E3 (34-Mbps) speeds. The Cisco 7120-E3 provides the following features:

Figure 1-9 shows the back of the Cisco 7120-E3. Access to the interfaces is located at the back of the router.


Figure 1-9: Cisco 7120-E3---Back View


The Cisco 7120-E3 WAN port has one enabled LED and six uplink port status LEDs. After system initialization, the enabled LED goes on to indicate that the port has been enabled for operation. If the initialization fails for any reason, the enabled LED will not go on. The LEDs are shown in Figure 1-10 and described in Table 1-3.


Figure 1-10: Cisco 7120-E3 WAN Port LEDs



Table 1-3: Cisco 7120-E3 LED Descriptions
LED Label Color State Function

EN

Green

On

Indicates the port is ready.

RCLK

Green

On

Indicates a receive clock has been detected.

FERF

Yellow

On

Indicates the framer detected far-end receive failure.

RL

Yellow

On

Indicates the port is in remote loopback mode.

AIS

Yellow

On

Indicates the framer detected an alarm indication signal.

OOF

Yellow

On

Indicates the framer detected out of frame.

LL

Yellow

On

Indicates the port is in local loopback mode.

Cisco 7120-AT3, Cisco 7120-AE3, and Cisco 7120-SMI3

The Cisco 7120-AT3 provides one high-speed, ATM port that supports full-duplex operation at T3 (45-Mbps) speeds. The Cisco 7120-AE3 provides one high-speed, ATM port that supports full-duplex operation at E3 (34-Mbps) speeds. The Cisco 7120-SMI3 provides one ATM port that supports full-duplex operation at OC-3c/STM1 single-mode intermediate reach (155-Mbps) speeds.

These models provide the following features:

Figure 1-11 shows the back of the Cisco 7120-AT3. Access to the interfaces is located at the back of the router.


Figure 1-11: Cisco 7120-AT3---Back View


Figure 1-12 shows the back of the Cisco 7120-AE3. Access to the interfaces is located at the back of the router.


Figure 1-12: Cisco 7120-AE3---Back View


Figure 1-13 shows the back of the Cisco 7120-SMI3. Access to the interfaces is located at the back of the router.


Figure 1-13: Cisco 7120-SMI3---Back View


The Cisco 7120-AT3, Cisco 7120-AE3, and Cisco 7120-SMI3 WAN ports have one enabled LED and three status LEDs. The LEDs are in the same location and labeled the same on each model. After system initialization, the enabled LED goes on to indicate that the port has been enabled for operation. If the initialization fails for any reason, the enabled LED will not go on. The LEDs are shown in Figure 1-14 and described in Table 1-4.


Figure 1-14: Cisco 7120-AT3 WAN Port LEDs



Table 1-4: Cisco 7120-AT3, Cisco 7120-AE3, and Cisco 7120-SMI3 LED Descriptions
LED Label Color State Function

EN

Green

On

Indicates the port is ready.

RX CEL

Green

On

Indicates the port has received an ATM cell.

RX CAR

Green

On

Indicates the port has detected a carrier on the receiver cable. For a fiber-optic interface, this means that light is detected, and a valid frame is detected.

RX ALM

Red

On

Indicates the router detected an alarm condition.

Cisco 7140 Series Overview

Cisco 7140 series routers consist of the following models:

Cisco 7140-2T3

The Cisco 7140-2T3 provides two high-speed, synchronous serial ports that support full-duplex operation at T3 (45-Mbps) speeds. The Cisco 7140-2T3 provides the following features:

Figure 1-15 shows the back of the Cisco 7140-2T3. Access to the interfaces is located at the back of the router.


Figure 1-15: Cisco 7140-2T3---Back View


The Cisco 7140-2T3 WAN ports have one enabled (EN) LED and six uplink port status LEDs (each port has a set of status LEDs). After system initialization, the enabled LED goes on to indicate that the ports have been enabled for operation. If the initialization fails for any reason, the enabled LED will not go on. The LEDs are shown in Figure 1-16 and described in Table 1-5.


Figure 1-16: Cisco 7140-2T3 WAN Port LEDs



Table 1-5: Cisco 7140-2T3 LED Descriptions
LED Label Color State Function

EN

Green

On

Indicates the port is ready.

RCLK

Green

On

Indicates a receive clock has been detected.

FERF

Yellow

On

Indicates the framer detected far-end receive failure.

RL

Yellow

On

Indicates the port is in remote loopback mode.

AIS

Yellow

On

Indicates the framer detected an alarm indication signal.

OOF

Yellow

On

Indicates the framer detected out of frame.

LL

Yellow

On

Indicates the port is in local loopback mode.

Cisco 7140-2E3

The Cisco 7140-2E3 provides two high-speed, synchronous serial ports that support full-duplex operation at E3 (34-Mbps) speeds. The Cisco 7140-2E3 provides the following features:

Figure 1-17 shows the back of the Cisco 7140-2E3. Access to the interfaces is located at the back of the router.


Figure 1-17: Cisco 7140-2E3---Back View


The Cisco 7140-2E3 WAN ports have one enabled (EN) LED and six uplink port status LEDs (each port has a set of status LEDs). After system initialization, the enabled LED goes on to indicate that the ports have been enabled for operation. If the initialization fails for any reason, the enabled LED will not go on. The LEDs are shown in Figure 1-18 and described in Table 1-6.


Figure 1-18: Cisco 7140-2E3 WAN Port LEDs



Table 1-6: Cisco 7140-2E3 LED Descriptions
LED Label Color State Function

EN

Green

On

Indicates the port is ready.

RCLK

Green

On

Indicates a receive clock has been detected.

FERF

Yellow

On

Indicates the framer detected far-end receive failure.

RL

Yellow

On

Indicates the port is in remote loopback mode.

AIS

Yellow

On

Indicates the framer detected an alarm indication signal.

OOF

Yellow

On

Indicates the framer detected out of frame.

LL

Yellow

On

Indicates the port is in local loopback mode.

Cisco 7140-2AT3, Cisco 7140-2AE3, and Cisco 7140-2MM3

The Cisco 7140-2AT3 provides two high-speed, ATM ports that support full-duplex operation at T3 (45-Mbps) speeds. The Cisco 7140-2AE3 provides two high-speed, ATM ports that support full-duplex operation at E3 (34-Mbps) speeds. The Cisco 7140-2MM3 provides two ATM ports that support full-duplex operation at OC-3c/STM1 multimode (155-Mbps) speeds.

These models provides the following features:

Figure 1-19 shows the back of the Cisco 7140-2AT3. Access to the interfaces is located at the back of the router.


Figure 1-19: Cisco 7140-2AT3---Back View


Figure 1-20 shows the back of the Cisco 7140-2AE3. Access to the interfaces is located at the back of the router.


Figure 1-20: Cisco 7140-2AE3---Back View


Figure 1-21 shows the back of the Cisco 7140-2MM3. Access to the interfaces is located at the back of the router.


Figure 1-21: Cisco 7140-2MM3---Back View


The Cisco 7140-2AT3, Cisco 7140-2AE3, and Cisco 7140-2MM3 WAN ports have one enabled (EN) LED and three status LEDs (each port has a set of status LEDs). The LEDs are in the same location and labeled the same on each model. After system initialization, the enabled LED goes on to indicate that the ports have been enabled for operation. If the initialization fails for any reason, the enabled LED will not go on. The LEDs are shown in Figure 1-22 and described in Table 1-6.


Figure 1-22: Cisco 7140-2AT3 WAN Port LEDs


Cisco 7140-2AT3, Cisco 7140-2AE3, and Cisco 7140-2MM3 LED Descriptions

LED Label Color State Function

EN

Green

On

Indicates the port is ready.

RX CEL

Green

On

Indicates the port has received an ATM cell.

RX CAR

Green

On

Indicates the port has detected a carrier on the receiver cable. For a fiber-optic interface, this means that light is detected, and a valid frame is detected.

RX ALM

Red

On

Indicates the router detected an alarm condition.

Cisco 7140-8T

The Cisco 7140-8T provides eight high-speed, synchronous serial ports that support full-duplex operation at T1 (1.544-Mbps) and E1 (2.048-Mbps) speeds. The Cisco 7140-8T provides the following features:

Figure 1-23 shows the back of the Cisco 7140-8T. Access to the interfaces is located at the back of the router.


Figure 1-23:
Cisco 7140-8T---Back View

The Cisco 7140-8T WAN ports have one enabled (EN) LED and five status LEDs (each of the eight ports has a set of status LEDs). After system initialization, the enabled LED goes on to indicate that all ports have been enabled for operation. If the initialization fails for any reason, the enabled LED will not go on. The LEDs are shown in Figure 1-24 and described in Table 1-7.


Figure 1-24: Cisco 7140-8T WAN Port LEDs


Table 1-7: Cisco 7140-8T LED Descriptions
LED Label Color State Function

EN

Green

On

Indicates ports are ready.

TD

Green

On

DTE---Transmit data out.

DCE---Transmit data in.

TC

Green

On

DTE---Transmit clock in.

DCE---Transmit clock in (TxCE).

RD

Green

On

DTE---Receive data in.

DCE---Receive data out.

RC

Green

On

DTE---Receive clock in.

DCE---Receive clock out.

Loopback/
Carrier Detect

Green

On

Indicates DTR1, DSR2, RTS3, CTS4, or DCD5 is active.

Green

Flashing

Indicates RTS, CTS, or DCD is sending and receiving data in half-duplex mode.

Yellow

On

Indicates local loop or internal loop active.

1DTR = Data Terminal Ready.
2DSR = Data Set Ready.
3RTS = Request To Send.
4CTS = Clear To Send.
5DCD = Data Carrier Detect.

Cisco 7140-2FE

The Cisco 7140-2FE provides two fixed LAN ports---10BaseT/100BaseTX autosensing Ethernet/Fast Ethernet (full and half duplex) equipped with an RJ-45 receptacle.


Figure 1-25:
Cisco 7140-2FE---Back View

Field-Replaceable Units

Cisco 7100 series routers have the following field-replaceable units (FRUs):

Note Replacement instructions for the rack-mount and cable-management kit, SDRAM memory, and Flash memory PC Cards are contained in the Installing Field-Replaceable Units in Cisco 7100 Series VPN Routers document that ships with each of the FRUs.

Replacement instructions for removing and replacing the other FRUs are contained in separate documents that accompany each FRU shipped from the factory. For example, if you need to replace a PA-E3 or PA-2E3 serial port adapter, refer to the PA-E3 Serial Port Adapter Installation and Configuration document. Replacement instructions are also available on the Documentation CD-ROM and on Cisco Connection Online (CCO).

Port Adapters

The port adapters installed in Cisco 7100 series routers are of the same type as those installed in the Cisco 7000 family routers. For information on supported port adapters, refer to the Cisco Product Catalog or contact your local sales representative. The port adapters provide network interfaces to connect the router to external networks.

All port adapters available for the Cisco 7100 series connect directly to the router and are locked into position by a locking tab with two screws (see Figure 1-26). To remove or replace a port adapter, you must loosen the screws (using a number 2 Phillips screwdriver) and slide the tab down. To lock the port adapter in place, slide the tab up and tighten
the screws.

Note Detailed port adapter installation information is contained in the installation note for the port adapter. For example, if you plan to replace a four-port Ethernet port adapter in your Cisco 7100 series router, refer to the PA-4E Ethernet 10BaseT Port Adapter Installation and Configuration note. The installation note accompanies every PA-4E port adapter that is shipped from the factory as an installed item in a Cisco 7100 series router or as a FRU. The document is also available on the Documentation CD-ROM and on CCO.

Figure 1-26: Port Adapter Locking Tabs---Cisco 7120 Series


Caution To ensure adequate airflow across the router port adapters, a port adapter or a blank port adapter must be installed in each port adapter slot. The product number for the blank port adapter is MAS-7100-PABLANK=.

Flash Disks

Cisco 7100 series routers support up to two installed Flash Disks that contain the default Cisco IOS software image. Flash Disks can be installed in slot 0 and slot  1 of the PC Card slots located at the back of the router. Slot 0 is the top slot and slot 1 is the bottom slot.

To ensure proper electromagnetic compatibility (EMC), the PC Card slot has a cover that is secured with a captive screw. To install or remove a Flash Disk from slot 0 or slot 1, you must loosen the captive screw.

Note A Flash Disk is the default memory device that ships with your Cisco 7100 series router.
Note The PC Card must be installed with the back label facing up. The PC Card is keyed and cannot be seated the wrong way. The ejector button will not pop out if the card is not completely inserted.
Note For procedures that explain the installation and use of the Flash Disk, refer to the Using the Flash Disk document that accompanies every Flash Disk shipped from the factory. This document is also available on the Documentation CD-ROM and on CCO.
Note To avoid potential problems when you install spare Flash Disks in the router, we recommend that you reformat all Flash Disks on a Cisco 7100 series router that is running the Cisco IOS release recommended for your router during your regularly scheduled service times. The Flash Disk requires the designation disk0 or disk1 to format it. The document Using the Flash Disk that shipped with your router explains how to reformat a Flash Disk.

Table 1-8 lists the Flash Disk memory options and their product numbers.


Table 1-8: Flash Disk Memory Options
Memory Size Product Number1

48 MB

MEM-7100-FLD48M

128 MB

MEM-7100-FLD128M

1These products are also available as Flash Disk upgrades. To order an upgrade, add an equal sign (=) after the product number, for example, MEM-7100-FLD48M=.
Note Flash memory cards that are used in Cisco 7200 series and Cisco 7500 series routers are also supported on Cisco 7100 series routers. For information on the Flash memory card, refer to the Installing Field-Replaceable Units in Cisco 7100 Series VPN Routers document that is available on the Documentation CD-ROM and on CCO.

SDRAM Memory

Warning Only trained and qualified personnel should be allowed to install, replace, or service this equipment. This equipment contains an energy hazard. Disconnect the system before servicing.

SDRAM memory consists of three DIMMs on the network processor card that contain the packet and system memory. By default, each chassis comes with 64 MB of fixed packet memory and 64 MB of upgradable system memory. You can have up to 256 MB of SDRAM system memory. (For more information on the network processor, see the "Network Processor Card" section.)

Note For information on how to replace the SDRAM memory, refer to the Installing Field-Replaceable Units in Cisco 7100 Series VPN Routers document that ships with an SDRAM upgrade or replacement order. This document is also available on the Documentation CD-ROM and on CCO.

Table 1-9 lists the SDRAM product numbers.


Table 1-9:
Total SDRAM Memory Configuration Product Number

64 MB1

1 64-MB DIMM in slot DIMM 1

1 64-MB DIMM in slot DIMM 02

MEM-7120/40-64S(=)

MEM-7120/40-64P

128 MB3

1 128-MB DIMM in slot DIMM 1

MEM-7120/40-128S=

192 MB

1 128-MB DIMM in slot DIMM 1 and
1 64-MB DIMM in slot DIMM 2

MEM-7120/40-192P=

256 MB

2 128-MB DIMMs; 1 in each slot (DIMM 1 and DIMM 2)

MEM-7120/40-256P=

1This is the default memory configuration for all Cisco 7100 series routers.
2Slot DIMM 0 is used exclusively for packet memory and is fixed at 64 MB.
3This memory product will be available in the future.
SDRAM DIMM Configurations
Note The amount of memory installed in slot DIMM 1 must be greater than or equal to the amount of memory installed in slot DIMM 2, and slot DIMM 2 can be zero.

Slot DIMM 0 is used exclusively for packet memory and is fixed at 64 MB in the factory.

Integrated Service Module

The Integrated Service Module (ISM) is a service module that resides in slot 5 in Cisco 7100 series routers. The ISM is a Layer 3 encryption service module that supports IP Security Protocol (IPSec) encryption of IP datagrams. In addition to enabling the secure use of public switched networks and the Internet through encryption, the ISM supports all encryption features supported by the Cisco IOS software. The hardware-based services provided by the ISM improve the overall performance of Cisco 7100 series routers by off-loading data encryption processing from the main system processor.

Caution To ensure compliance with U.S. export laws and regulations, and to prevent problems later on, refer to the "Compliance with U.S. Export Laws and Regulations Regarding Encryption" section in the Regulatory Compliance and Safety Information for the Cisco 7100 Series VPN Routers document for specific and important information.

The ISM has one enabled LED and two status LEDs. After system initialization, the enabled LED goes on to indicate that the ISM has been enabled for operation. If the initialization fails for any reason, the enabled LED will not go on. The LEDs are shown in Figure 1-27 and described in Table 1-10.


Figure 1-27: ISM LEDs



Table 1-10: ISM LED Descriptions
LED Label Color State Function

EN

Green

On

Indicates the ISM is powered up.

After system initialization, the enabled LED goes on to indicate that power is received and that the ISM is enabled for operation. The following conditions must all be met before the enabled LED goes on:

  • The ISM is correctly connected to the backplane and receiving power.

  • The system bus recognizes the ISM.

If either of these conditions is not met, or if the router initialization fails, the enabled LED does not go on.

BOOT

Amber

On

Indicates the ISM is booting.

This amber LED remains on while the ISM is in the boot process or when a packet is being encrypted or decrypted.

ERROR

Amber

On

Indicates an error has occurred.

This amber LED goes on to indicate that an error was found in either the encryption function or the compression function. It is normally off.

Note For more information on ISM features and for installation and configuration information, refer to the Integrated Service Adapter and Integrated Service Module Installation and Configuration document that shipped with your ISM. This document is also available on the Documentation CD-ROM and on CCO.
Caution To ensure adequate airflow across the router components, an ISM or a blank service module must be installed in slot 5. The product number for the blank service module is SM-BLANK=.

Rack-Mount and Cable-Management Kit

The rack-mount and cable-management kit for Cisco 7100 series routers consists of rack-mount brackets and a cable-management bracket that are designed for mounting your router in 19- or 23-inch, four-post or telco-type equipment racks. The kit is shipped with each Cisco 7100 series router and is also available as a single FRU. The product number for the rack-mount and cable-management kit is ACS-7100-RMK=.

Note Rubber feet for tabletop installation are included in the accessory kit that shipped with your router. (See the "Setting the Chassis on a Tabletop" section.)

For detailed instructions about how to install the rack-mount and cable-management brackets on your Cisco 7100 series router, see the "Rack-Mounting the Chassis" section and the "Connecting to the Network" section.

Note Information on how to install the rack-mount and cable-management brackets is also in the Installing Field-Replaceable Units in Cisco 7100 Series VPN Routers document that ships with each spare rack-mount and cable-management kit. This document is also available on the Documentation CD-ROM and on CCO.

Functional Overview

The following sections provide a functional overview of Cisco 7100 series routers to help you become familiar with the capabilities of the router:

Chassis Slot and Logical Interface Numbering

In Cisco 7100 series routers, the slot number is the location in the chassis where the interface resides and the port number is the physical port associated with that slot. Cisco 7100 series router slots are numbered 0 through 5. Interfaces in the Cisco IOS software are identified by a type, slot number, and port number. The number of physical ports depends on the type of modular port adapter or fixed interface. For example, in a Cisco 7120-4T1, serial 1/0 indicates port 0 on the fixed serial interface in slot 1. (See Figure 1-5.)

Slots in the Cisco 7120 series are numbered as follows and are shown in Figure 1-28:


Figure 1-28: Port Adapter Slot Numbering---Cisco 7120 Series


Slots in the Cisco 7140 series are numbered as follows and are shown in Figure 1-29:


Figure 1-29: Port Adapter Slot Numbering---Cisco 7140 Series


Interface Information in the Software

You can identify interfaces by using software commands. To display information about all interfaces, use the show interfaces command. To display information about a specific interface, use the show interfaces command with the interface type, slot number, and port number in the format show interfaces type slot/port.

The following example shows how the show interfaces command, used without arguments, displays status information (including the slot and port number) for each interface in a Cisco 7100 series router. In the following example, most of the status information for each interface is omitted:

Router# show interfaces
FastEthernet0/0 is up, line protocol is up 
  Hardware is DEC21140A, address is 0050.73ff.6300 (bia 0050.73ff.6300)
  Internet address is 10.0.0.0/1
  MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec, 
     (display text omitted)
 
FastEthernet0/1 is administratively down, line protocol is down 
  Hardware is DEC21140A, address is 0050.73ff.6301 (bia 0050.73ff.6301)
  Internet address is 10.0.0.0/2
  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec, 
    (display text omitted)
 
Serial1/0 is administratively down, line protocol is down 
  Hardware is M2T-T3 pa
  MTU 4470 bytes, BW 44210 Kbit, DLY 200 usec, 
    (display text omitted)
 
Serial1/1 is administratively down, line protocol is down 
  Hardware is M2T-T3 pa
  MTU 4470 bytes, BW 44210 Kbit, DLY 200 usec, 
     (display text omitted)
 
FastEthernet4/0 is administratively down, line protocol is down 
  Hardware is DEC21140, address is 0050.73ff.6370 (bia 0050.73ff.6370)
  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec, 
   (display text omitted)

You can also use arguments such as the interface type (Ethernet, Token Ring, ATM, and so forth) and the slot/port number to display information about a specific interface only. The following example shows the display for the fixed LAN (Fast Ethernet interface) port 0 in slot 0:

Router# show interfaces fastethernet 0/0
FastEthernet0/0 is up, line protocol is up 
  Hardware is DEC21140A, address is 0050.73ff.6300 (bia 0050.73ff.6300)
  Internet address is 10.0.0.0/1
  MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec, 
     reliablility 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Half-duplex, 10Mb/s, 100BaseTX/FX
  ARP type:ARPA, ARP Timeout 04:00:00
  Last input 00:00:04, output 00:00:03, output hang never
  Last clearing of "show interface" counters never
  Queueing strategy:fifo
  Output queue 0/40, 0 drops; input queue 0/75, 0 drops
  5 minute input rate 2000 bits/sec, 1 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     134 packets input, 41451 bytes
     Received 134 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 0 multicast
     0 input packets with dribble condition detected
     26 packets output, 5281 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out

For information on the other commands used to configure the router, refer to the Cisco IOS configuration guides and command references, which are available on the Documentation CD-ROM or in print.

MAC Addresses

The Media Access Control (MAC) or hardware address is a standardized data-link layer address that is required for certain network interface types. These addresses are not used by other devices in the network; they are specific and unique to each port. The router uses a specific method to assign and control the MAC addresses of its port adapters.

All LAN interfaces (ports) require unique MAC addresses. Typically, the MAC address of an interface is stored on a memory component that resides directly on the interface circuitry; however, the online insertion and removal (OIR) feature requires a different method. (For a description of OIR, see the next section, "Online Insertion and Removal.")

The OIR feature allows you to remove a port adapter and replace it with another identically configured one. If the new port adapter matches the port adapter you removed, the system immediately brings it on line. To allow OIR, an address allocator with unique MAC addresses is stored in an EEPROM on the router. Each address is reserved for a specific port and slot in the router regardless of whether a port adapter resides in that slot. The MAC addresses are assigned to slot 3 in Cisco 7120 series routers and slot 4 in Cisco 7140 series routers. This address scheme allows you to remove a port adapter and insert the port adapter into other routers without causing the MAC addresses to move around the network or be assigned to multiple devices.

If the MAC addresses were stored on each port adapter, OIR would not function because you could never replace one port adapter with an identical one; the MAC addresses would always be different. Also, each time a port adapter was replaced, other devices on the network would have to update their data structures with the new address and, if they did not do so quickly enough, could cause the same MAC address to appear in more than one device at the same time.

Note Storing the MAC addresses for every slot in one central location means the addresses stay with the memory device on which they are stored.

Online Insertion and Removal

The modular port adapter installed in Cisco 7100 series routers supports OIR. This function allows you to install and replace a port adapter while the router is operating; you do not need to notify the software or shut down the system power. This provides a method that is seamless to end users on the network, maintains all routing information, and preserves sessions.

The following is a functional description of OIR for background information only; for specific procedures for installing and replacing a port adapter in a Cisco 7100 series router, see the configuration note that ships with each port adapter.

Each port adapter has a bus connector that connects it to the router. Each connector has a set of tiered pins in three lengths that send specific signals to the system as they make contact with the port adapter. The system assesses the signals it receives and the order in which it receives them to determine if a port adapter is being removed or inserted into the router. From these signals, the system determines whether to reinitialize a new interface or shut down a removed interface. For example, when you insert a port adapter, the longest pins make contact with the port adapter first, and the shortest pins make contact last. The system recognizes the signals and the sequence in which it receives them.

When you remove or insert a port adapter in a Cisco 7100 series router, the port adapter pins send signals to notify the system, which then performs as follows:

    1. Rapidly scans the system for configuration changes.

    2. Initializes all newly inserted port adapters, noting any removed interfaces and placing them in the administratively shutdown state.

    3. Brings all previously configured interfaces on the port adapter back to the state they were in when they were removed. Any newly inserted interfaces are put in the administratively shutdown state, as if they were present (but not configured) at boot time. If a similar port adapter type is reinserted into a slot, its ports are configured and brought on line up to the port count of the original port adapter.

Peripheral Component Interconnect Buses

All interfaces connect to two Peripheral Component Interconnect (PCI) buses on the router that provide a path to packet I/O memory and the network processor. Interfaces in slots 1, 3, and 5 use PCI bus 0 and interfaces in slots 0, 2, and 4 use PCI bus 1. For port adapters that are installed in the modular port adapter slots (slot 3 or slot 4), use the guidelines described in "Modular Port Adapter Configuration Guidelines," to ensure sufficient bandwidth.

The maximum recommended bandwidth points on each PCI bus is 600 points. For best performance we recommend that you avoid using port adapters that exceed the total available bandwidth for your router.

Network Processor Card

The network processor card resides inside the chassis and is shown in Figure 1-30. The network processor card provides the following features:

The network processor card also performs the following system management functions:

Note Instructions for removing and replacing memory components on the network processor card, such as the SDRAM DIMMs, are contained in the Installing Field-Replaceable Units in Cisco 7100 Series VPN Routers document that ships with an SDRAM upgrade or replacement. This document is also available on the Documentaion CD-ROM and on CCO.

Figure 1-30: Network Processor Card


The network processor card consists of the following components:

Table 1-11 describes the memory types on the network processor card.


Table 1-11: Network Processor Memory Components
Memory Type Size Quantity Description Location

SDRAM memory

64 to 128 MB

2 configurable1 SDRAM slots

64-128-MB DIMMs (based on maximum SDRAM required)

DIMM 1 = U13
DIMM 2 = U14

Boot ROM

512 KB

1

OTP2 ROM for the ROM monitor program

Socket U21

Primary cache

  • Cisco 7120

32 KB (instruction), 32 KB (data)

-

Processor's primary internal cache

Internal to processor

  • Cisco 7140

16 KB (instruction), 16 KB (data)

-

Processor's primary internal cache

Internal to processor

Secondary cache3

256 KB

-

Processor's secondary unified instruction and data cache

Internal to Cisco 7140 processors only

External cache

2 MB (fixed)

-

Secondary external cache for Cisco 7120 series processors

Tertiary external cache for Cisco 7140 series processors

-

Flash memory SIMM

8 MB

1

Contains the default boot helper image

Flash SIMM socket P2

Flash Disk

48 MB and 128 MB

Up to 2

Contains the default Cisco IOS image

PC Card slot 0 and slot 1

NVRAM

128 KB

1

Nonvolatile EPROM for the system configuration file

U69
1Slot DIMM 0 (U16) is used exclusively for packet memory and is not user-configurable.
2OTP = one-time programmable.
3Cisco 7120 series routers do not have a secondary internal cache.

To identify the processor and software version installed in your Cisco 7100 series router, use the show version command. The following example using a Cisco 7120 series router shows sample output from the show version command:

Router# show version
Cisco Internetwork Operating System Software 
IOS (tm) EGR Software (c7100-P-M), Released Version 12.0(4)XE 
Copyright (c) 1986-1999 by cisco Systems, Inc.
Compiled Mon 07-Jun-99 17:49 by biff
Image text-base:0x600088F8, data-base:0x60A54000
 
ROM:System Bootstrap, Version 12.0(4)XE, RELEASED SOFTWARE
BOOTFLASH:EGR Software (c7100-BOOT-M), Released Version 12.0(4)XE
 
Router uptime is 19 minutes
System restarted by reload
System image file is "c7100-p-mz"
 
cisco 7120-T3 (EGR) processor with 61440K/69632K bytes of memory.
R527x CPU at 225Mhz, Implementation 40, Rev 10.0, 2048KB L2 Cache
Last reset from power-on
X.25 software, Version 3.0.0.
3 FastEthernet/IEEE 802.3 interface(s)
1 Serial network interface(s)
125K bytes of non-volatile configuration memory.
          
4096K bytes of Flash internal SIMM (Sector size 256K).
Configuration register is 0x2000

System LEDs and Reset Button

Cisco 7100 series routers provide LEDs to indicate the status of the router and a CPU reset button that allows you to reset the entire system. The LEDs are shown in Figure 1-31 and described in Table 1-12.

Caution To prevent system errors and problems, use the CPU reset button only at the direction of your service representative.

Figure 1-31: Cisco 7100 Series System LEDs


Note The Cisco 7100 series system LEDs are identical for all models except that Cisco 7120 series routers have no power supply LEDs, while Cisco 7140 series routers have two identical banks of three LEDs that correspond to each AC-input receptacle.


Table 1-12: Cisco 7100 Series System LED Descriptions
LED Label Color State Function

ACT 0
ACT 1

Green

On

Indicates 10BaseT/100BaseTX Ethernet ports are transmitting or receiving packets (activity).

LNK 0
LNK 1

Green

On

Indicates 10BaseT/100BaseTX Ethernet ports have established a valid link with the network. This LED remains off during normal operation of the router, unless there is an incoming carrier signal.

SLOT 0
SLOT 1

Green

On

Indicates which PC Card slot is in use when either slot is being accessed by the system. These LEDs remain off during normal operation of the router.

PWR

Green

On

Indicates that the power supply is delivering AC-input power to the router.

SYS RDY

Green

On

Indicates the system is operational.

AC OK

Green

On

Indicates that AC input is within normal range.

DC OK

Green

On

Indicates that DC output is within normal range.

OTF

Green

On

Indicates that internal temperatures are normal.

Amber

On

Indicates a power supply fan failure.

Environmental Monitoring and Reporting Functions

Environmental monitoring and reporting functions are controlled by the network processor and allow you to maintain normal system operation by identifying and resolving adverse conditions that might disrupt operation.

The environmental monitoring functions constantly monitor the internal chassis air temperature and power supply voltages and currents. The power supply monitors its own voltage and temperature and shuts itself down if it detects a critical condition within the power supply. The reporting functions periodically log the values of measured parameters so that you can retrieve them for analysis later, and the reporting functions display warnings on the console if any of the monitored parameters exceed defined thresholds.

The front and back of the chassis must remain unobstructed to ensure adequate airflow and prevent overheating inside the chassis; we recommend at least 3 inches (7.6 cm) of clearance. Temperature sensors in the router monitor the internal air temperature and send warning messages when the internal air temperature exceeds the specified threshold.

Environmental Monitoring

The environmental monitoring functions use four sensors to monitor the temperature of the cooling air as it moves through the chassis.

If the air temperature exceeds a defined threshold, the router displays warning messages on the console terminal. The system stores the present parameter measurements for both temperature and power voltage in NVRAM so you can retrieve them later.

In addition, the power supply monitors the internal power supply temperature and voltages. A power supply is either within tolerance (normal) or out of tolerance (critical). If the internal power supply temperature or voltage reaches a critical level, the power supply shuts down without any interaction with the system processor.

The environmental monitoring functions use the following levels of status conditions to monitor the system:

Table 1-13 lists the typical temperature thresholds for each network processor type, and Table 1-14 lists the power thresholds for the normal, warning, and critical (power supply-monitored) levels.


Table 1-13: Typical Processor-Monitored Temperature Thresholds
Parameter High Warning High Critical

Core

120° F (49° C)

129° F (54° C)

Chassis inlet

109° F (43° C)

118° F (48° C)

Chassis outlet 1

114° F (46° C)

123° F (51° C)

Chassis outlet 2

116° F (47° C)

125° F (52° C)

Note If the system reports temperatures in the critical range, you must manually shut down the router. The processor cannot shut down the router automatically.


Table 1-14: Typical Power Supply-Monitored Voltage Thresholds
Parameter Low Critical Low Warning High Warning High Critical

+2.5V

+2.35V

+2.39V

+2.69V

+2.72V

+3.3V

+3.11V

+3.19V

+3.39V

+3.47V

+5.15V

+4.88

+5.00

+5.23

+5.39

+12.3V

+11.53

+11.77

+12.76

+13.05

+12.3V

+11.53

+11.77

+12.76

+13.05

-12.5V

-10.20V

-11.24V

-13.71V

-14.33V

Displaying Environmental Status Reports

Cisco 7100 series routers display warning messages on the console if chassis interface-monitored parameters exceed a desired threshold. You can also retrieve and display environmental status reports with the show environment, show environment all, show environment last, and show environment table commands. Parameters are measured and reporting functions are updated every 60 seconds. A brief description of each of these commands follows.

Caution To prevent overheating the chassis, ensure that your system is drawing cool inlet air. Overtemperature conditions can occur if the system is drawing in the exhaust air of other equipment. Ensure adequate clearance around the sides of the chassis so that cooling air can flow through the chassis interior unimpeded and exhaust air exits the chassis and is not drawn into the inlet vent of other device.

The show environment command displays the current environmental status of the system. The report displays parameters that are out of the normal values. No parameters are displayed if the system status is normal. The example that follows shows the display for a system in which all monitored parameters are within normal range:

Router# show environment
All measured values are normal

If the environmental status is not normal, the system reports the worst-case status level. Following is a sample overvoltage warning:

Router# show environment
Warning: +3.3 V measured at +3.41 V

The show environment last command retrieves and displays the NVRAM log, which provides a record of environmental status readings. Air temperature is measured and displayed, and the voltage supplied by the power supply is also displayed.

Following is sample output of the show environment last command:

Router# show environment last
  chassis core	previously measured at 34C/93F
  chassis inlet	previously measured at 28C/82F
  chassis outlet 1	previously measured at 31C/87F
  chassis outlet 2	previously measured at 33C/91F
  +2.5 V	previously measured at +2.59
  +3.3 V	previously measured at +3.32
  +5.15 V	previously measured at +5.13
  +12.3 V	previously measured at +12.99
  +12.3 V	previously measured at +12.33
  -12.5 V	previously measured at -12.43

The show environment table command displays the temperature and voltage thresholds for each temperature sensor and for each monitored status level, which are related to those thresholds listed in Table 1-13 and Table 1-14.

Following is sample output of the show environment table command:

Router# show environment table

Sample Point

LowCritical

LowWarning

HighWarning

HighCritical

chassis core
chassis inlet
chassis outlet 1
chassis outlet 2


49C/120F
43C/109F
46C/114F
47C/116F

54C/129F
48C/118F
51C/123F
52C/125F

+2.5 V
+3.3 V
+5.15 V
+12.3 V
+12.3 V
-12.5 V

+2.35
+3.11
+4.88
+11.53
+11.53
-10.20

+2.39
+3.19
+5.00
+11.77
+11.77
-11.24

+2.69
+3.39
+5.23
+12.76
+12.76
-13.71

+2.72
+3.47
+5.39
+13.05
+13.05
-14.33

Note Temperature ranges and values are subject to change.

The show environment all command displays an extended report that includes temperature readings and voltage readings.

Following is sample output of the show environment all command:

Router# show environment all
Power Supply:
        Power supply is standard power supply. Unit is on.
 
Temperature readings:
        chassis core     measured at 33C/91F 
        chassis inlet    measured at 27C/80F 
        chassis outlet 1 measured at 30C/86F 
        chassis outlet 2 measured at 32C/89F 
 
Voltage readings:
        +2.5 V  measured at +2.59 V 
        +3.3 V  measured at +3.32 V 
        +5.15 V measured at +5.13 V 
        +12.3 V measured at +12.29 V 
        +12.3 V measured at +12.33 V 
        -12.5 V measured at -12.43 V 
 
Envm stats saved 2 time(s) since reload

Fan Failures

When the system power is on, all four fans should be operational. The system continues to operate if a fan fails; however, if the air temperature exceeds a defined threshold, the router displays warning messages on the console terminal. (See the "Troubleshooting the Cooling Subsystem" section.)

For complete descriptions and instructions of the environmental monitor commands, refer to the Configuration Fundamentals Configuration Guide and Configuration Fundamentals Command Reference publications, which are available on CCO, the Documentation CD-ROM, or in print.


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Posted: Mon Feb 7 21:59:48 PST 2000
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