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Implementing BGP on Cisco IOS XR Software
How to Implement BGP on Cisco IOS XR Software
RC-36
Cisco IOS XR Routing Configuration Guide
DETAILED STEPS
Configuring the MED Metric for BGP
Perform this task to set the multi exit discriminator (MED) to advertise to peers for routes that do not
already have a metric set (routes that were received with no MED attribute).
SUMMARY STEPS
1. configure
2. router bgp autonomous-system-number
3. default-metric value
Command or Action Purpose
Step 1
configure
Example:
RP/0/RP0/CPU0:router# configure
Enters global configuration mode.
Step 2
router bgp
autonomous-system-number
Example:
RP/0/RP0/CPU0:router(config)# router bgp 120
Enters BGP configuration mode allowing you to configure
the BGP routing process.
Step 3
bgp default local-preference
value
Example:
RP/0/RP0/CPU0:router(config-bgp)# bgp default
local-preference 200
Sets the default local preference value from the default of
100 to 200, making it a more preferable path.
Step 4
end
or
commit
Example:
RP/0/RP0/CPU0:router(config-bgp)# end
or
RP/0/RP0/CPU0:router(config-bgp)# 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.