Specifications

Implementing IS-IS on Cisco IOS XR Software
How to Implement IS-IS on Cisco IOS XR Software
RC-195
Cisco IOS XR Routing Configuration Guide
Configuring Keychains for IS-IS
This task explains how to configure keychains for IS-IS. This task is optional.
Keychains can be configured at the router level (lsp-password command) and at the interface level
(hello-password command) within IS-IS. These commands reference the global keychain configuration
and instruct the IS-IS protocol to obtain security parameters from the global set of configured keychains.
The router-level configuration (lsp-password command) sets the keychain to be used for all IS-IS LSPs
generated by this router, as well as for all Sequence Number Protocol Data Units (SN PDUs). The
keychain used for HELLO PDUs is set at the interface level, and may be set differently for each interface
configured for IS-IS.
SUMMARY STEPS
1. configure
2. router isis instance-id
3. lsp-password keychain keychain-name [level {1 | 2}] [send-only] [snp send-only]
4. interface type instance
5. hello-password keychain keychain-name [level {1 | 2}] [send-only]
Step 5
hello-password {hmac-md5 | text} {clear |
encrypted}
password [level {1 | 2}] [send-only]
Example:
RP/0/RP0/CPU0:router(config-isis-if)#
hello-password text clear mypassword
Configures the authentication password for an IS-IS
interface.
Step 6
end
or
commit
Example:
RP/0/RP0/CPU0:router(config-isis-if)# end
or
RP/0/RP0/CPU0:router(config-isis-if)# commit
Saves configuration changes.
• When you issue the end command, the system prompts
you to commit changes:
Uncommitted changes found, commit them before
exiting(yes/no/cancel)?
[cancel]:
– Entering yes saves configuration changes to the
running configuration file, exits the configuration
session, and returns the router to EXEC mode.
– Entering no exits the configuration session and
returns the router to EXEC mode without
committing the configuration changes.
– Entering cancel leaves the router in the current
configuration session without exiting or
committing the configuration changes.
• Use the commit command to save the configuration
changes to the running configuration file and remain
within the configuration session.
Command or Action Purpose