Overview

This chapter provides an overview of the Connectivity Management Processor (CMP).

This chapter includes the following sections:

•Information About the CMP

•CMP MGMT Ethernet Port

•Connecting to the CMP MGMT Ethernet Port

•Setting Up Access to the CMP

•High Availability

Information About the CMP

The CMP is a separate processor included on the Supervisor Engine 2T-10GE in addition to the main route processor (RP). The CMP provides a backup network interface to the supervisor engine when the RP is unreachable. You can access the CMP to configure from the supervisor engine faceplate and to perform system operations, such as monitoring the RP console or restarting the RP.

Each CMP contains its own RAM, bootflash, and front panel management Ethernet port. The CMP eliminates the need for a separate permanent terminal server attached to your supervisor engine. You connect to the CMP through the front panel console, or a CMP-management Ethernet (CMP-MGMT ETH) port with a Secure Shell (SSH) or Telnet session, to monitor or reboot the supervisor engine.

Each CMP remains operational even if the supervisor engine is in standby mode or the supervisor engine is down because of issues such as overtemperature alarms. Each CMP receives power from an auxiliary power bus in the supervisor engine that remains operational as long as you have at least one power cable attached to the supervisor engine.

The CMP provides the following functions:

•Communicates with the supervisor engine and I/O modules even if a Cisco IOS router is not responding on the mgmt0 port.

•Maintains connectivity when you reboot the supervisor engine.

•Monitors the supervisor engine console port.

•Reboots the local supervisor engine.

•Takes over the supervisor engine console port.

•Collects failure logs and monitors bootup diagnostic messages.

Note The CMP runs a separate image from the Cisco IOS image on the switch (see the "Upgrading the CMP Image" section on page 2-4).

CMP MGMT Ethernet Port

The CMP has a dedicated front-panel Ethernet port but does not have its own front-panel console port. Figure 1-1 shows the supervisor engine front panel, with the CMP MGMT Ethernet port and its Link LED in the middle of the front panel.

Figure 1-1 Supervisor Engine Front Panel

The supervisor engine contains an LED that indicates the status of the CMP MGMT Ethernet port. Figure 1-1 identifies the LEDs and Table 1-1 describes which processor uses each LED.

Table 1-1 RP and CMP LEDs, Slots, Ports, and Connectors 

Callout
LED, Slot, Port, or Connector
Processor Usage

1

STATUS LED

RP only.

2

ID LED

RP only.

3

SYSTEM LED

RP only.

4

ACTIVE LED

RP only.

5

PWR MGMT LED

RP only.

6

RESET switch LED

RP only.

7

PCMCIA slot

RP only.

8

SFP UPLINK ports and LEDs

RP only.

9

MANAGEMENT RJ45 connector and LED

CMP only. LED on right side on connector indicates port status.

10

CONSOLE RJ45 connector

Shared by CMP and RP.

11

10GE UPLINK port and LEDs

RP only.

12

USB console port

Shared by CMP and RP.

13

USB host port

Unsupported.


You can view the baud rate, parity, number of stop bits, and data bits settings of the front panel console by entering the show line console command.

Connecting to the CMP MGMT Ethernet Port

To connect the CMP to the network, follow these steps for each installed supervisor engine:

Step 1 Connect a modular, RJ-45, UTP cable to the CMP MGMT ETH port on the supervisor engine.

Step 2 Connect the other end of the cable to the networking device.

You configure the cmp-mgmt interface by accessing the CMP console. For more information on accessing the console see, "Setting Up Access to the CMP" section.

Caution To prevent an IP address conflict, do not connect the CMP MGMT port to the network until the initial configuration is complete.

Setting Up Access to the CMP

When the RP and CMP are both operational, you can log in using your admin username and password. If the RP is operational, the CMP accepts logins from users with network-admin privileges. The default login username is root or admin and password is default. You cannot add users but you can change the password for admin or root users.

Table 1-2 lists the ways you can change the password:

Table 1-2 Changing Password for Root or Admin Users

 
Action
Command

Step 1 

Enter configuration mode on the CMP.

configure terminal

Step 2 

Changes the password for admin or root users.

password


Table 1-3 shows the character sequences to switch between the RP and CMP on a console connection.

Table 1-3 Switching Access Between RP and CMP on a Console Connection

Action
Control Sequence

RP to CMP

Press Ctrl-c and then Shift-m 3 times consecutively:
Ctrl-c Shift-m Ctrl-c Shift-m Ctrl-c Shift-m

CMP to RP

Press Ctrl r and then Shift m 3 times consecutively:
Ctrl-r Shift-m Ctrl-r Shift-m Ctrl-r Shift-m


You cannot disable the SSH server on the CMP because it is enabled by default on the CMP. If required, you can enable the Telnet server. Table 1-4 lists the commands that you can use to enable or disable the Telnet server from the configure terminal mode (router-cmp(config)#).

Table 1-4 Enabling and Disabling Commands for the SSH Server and Telnet Server

Action
Command

Enable Telnet server.

telnet server enable

Disable Telnet server.

no telnet server enable


High Availability

A fully redundant switch contains two supervisor engines. Each of these supervisor engines contains a CMP. Although only one supervisor engine is active at any one time, the CMP software in each supervisor engine is always active. To configure for a high-availability, connect two Ethernet cables one to each cmp-mgmt interface. Also, configure two IP addresses, one for each cmp-mgmt interface.

Note Supervisor engine switchovers do not reload the CMPs.

A CMP failure does not cause a supervisor engine switchover.