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Jun 30 / Greg

Cisco CMP – Out Of Band Built Into Your Router

Today I had a customer ask us for assistance in configuring their CMP on their Cisco Sup2T for a 6500 chassis. To which I promptly googled it hehe.

A CMP is the Connectivity Management Processor, AKA out of band manager. This is similar to IPMI in the server world. It lives on inside the supervisor, but it is completely separated out. It has its own proc, ram, interface. If the supervisor tanks, you can still access it via the CMP.

Connecting from the console is simple:

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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

Once there you can use “root” as the user and “default” as the password.

Initial config(IP/Gateway) is equally simple:

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Step 1 
switch-cmp# configure terminal
!Enters configuration mode on the CMP.
 
Step 2 
switch-cmp(config)# interface cmpmgmt
!Enters interface configuration mode for the cmp-mgmt interface on either the active or the standby supervisor engine.
 
Step 3 
switch-cmp(config-if)# ip default gateway 192.0.2.10
!Configures the default gateway for the cmp-mgmt interface.
 
Step 4 
switch-cmp(config-if)# ip address 192.0.2.1/16
!Configures the IP address/mask

Pretty cool feature…even the Cisco haters out there can appreciate it 😉

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