Chapter 16: Dynamic Routing Protocols
STANDARD Revision 1.0
C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved.
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Note: The key can be up to 16 characters long. Every RIP message sent on this interface contains a digest and every
incoming message received is validated based on its digest.
3.
Confirm that the interface is set up to do MD5 digest authentication:
show ip rip
The output should look similar to the following:
VRF Status
default enabled
RIP Interfaces
Interface VRF Df Met Auth Mode State
10.62.1.2 default 0 text active
RIP Timers
VRF default: Update interval is set to 30 seconds.
VRF default: Route invalidation interval is set to 180 seconds.
VRF default: Route flush interval is set to 120 seconds.
Multiple Key Authentication
For multiple key authentication you need only assign a key chain that has been configured with more than one key.
Otherwise the MD5 functionality works as described in the single key mode.
For MD5 to interoperate, the keys and key IDs in the C4/c CMTS key chain must match the keys in the external router.
Enable Multiple Key Authentication (i.e., Key Chains)
Use this procedure to enable multiple key authentication.
To Enable Multiple Key Authentication
1.
Create a key chain and key:
configure key chain <key chain name> key <key id> key-string <key>
Where:
key chain name is a text string up to 16 characters long.
key id
is a number between 0 and 255.
key
is a text string up to 16 characters long.
Both the key ID and the key defined on the C4/c CMTS must be the same as the key ID and key defined on the other
router. The key chain name used on the C4/c CMTS does not have to match that of the other router.