Specifications
Implementing OSPF on Cisco IOS XR Software
How to Implement OSPF on Cisco IOS XR Software
RC-290
Cisco IOS XR Routing Configuration Guide
Examples
The following example shows how to configure the keychain ospf_intf_1 that contains five key IDs. Each 
key ID is configured with different send-lifetime values; however, all key IDs specify the same text 
string for the key.
key chain ospf_intf_1
key 1
send-lifetime 11:30:30 May 1 2007 duration 600
cryptographic-algorithm MD5T
key-string clear ospf_intf_1
key 2
send-lifetime 11:40:30 May 1 2007 duration 600
cryptographic-algorithm MD5
key-string clear ospf_intf_1
key 3
send-lifetime 11:50:30 May 1 2007 duration 600
cryptographic-algorithm MD5
key-string clear ospf_intf_1
key 4
send-lifetime 12:00:30 May 1 2007 duration 600
cryptographic-algorithm MD5
key-string clear ospf_intf_1
key 5
send-lifetime 12:10:30 May 1 2007 duration 600
cryptographic-algorithm MD5
key-string clear ospf_intf_1
Step 6
authentication message-digest keychain 
keychain
Example:
RP/0/RP0/CPU0:router(config-ospf-ar-if)# 
authentication message-digest keychain ospf_int1
Configures an MD5 keychain.
Note In the example, the ospf_intl keychain must be 
configured before you attempt this step.
Step 7
end
or
commit
Example:
RP/0/RP0/CPU0:router(config-ospf-ar-if)# end
or
RP/0/RP0/CPU0:router(config-ospf-ar-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










