Specifications
Implementing OSPF on Cisco IOS XR Software
How to Implement OSPF on Cisco IOS XR Software
RC-273
Cisco IOS XR Routing Configuration Guide
Step 5
area 
area-id
Example:
RP/0/RP0/CPU0:router(config-ospf)# area 0
Enters area configuration mode and configures an area for 
the OSPF process. 
• The area-id argument can be entered in dotted-decimal 
or IPv4 address notation, such as area 1000 or 
area 0.0.3.232. However, you must choose one form or 
the other for an area.
Step 6
mpls traffic-eng
Example:
RP/0/RP0/CPU0:router(config-ospf)# mpls 
traffic-eng 
Configures the MPLS TE under the OSPF area.
Step 7
interface 
type instance
Example:
RP/0/RP0/CPU0:router(config-ospf-ar)# interface 
interface loopback0
Enters interface configuration mode and associates one or 
more interfaces to the area.
Step 8
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.
Step 9
show ospf [
process-name
] [
area-id
] mpls 
traffic-eng {link | fragment}
Example:
RP/0/RP0/CPU0:router# show ospf 1 0 mpls 
traffic-eng link
(Optional) Displays information about the links and 
fragments available on the local router for MPLS TE.
Command or Action Purpose










