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Implementing BGP on Cisco IOS XR Software
How to Implement BGP on Cisco IOS XR Software
RC-28
Cisco IOS XR Routing Configuration Guide
• Tuning the BGP Best Path Calculation, page RC-39 (optional)
• Indicating BGP Backdoor Routes, page RC-41 (optional)
• Configuring Aggregate Addresses, page RC-43 (optional)
• Redistributing iBGP Routes into IGP, page RC-44 (optional)
• Redistributing Prefixes into Multiprotocol BGP, page RC-46 (optional)
• Configuring BGP Route Dampening, page RC-48 (optional)
• Applying Policy When Updating the Routing Table, page RC-52 (optional)
• Setting BGP Administrative Distance, page RC-53 (optional)
• Configuring a BGP Neighbor Group, page RC-55 (optional)
• Configuring a BGP Neighbor, page RC-58 (required)
• Configuring a Route Reflector for BGP, page RC-60 (optional)
• Configuring BGP Route Filtering by Route Policy, page RC-62 (optional)
• Disabling Next Hop Processing on BGP Updates, page RC-64 (optional)
• Configuring BGP Community and Extended-Community Filtering, page RC-65 (optional)
• Configuring Software to Store Updates from a Neighbor, page RC-67 (optional)
• Disabling a BGP Neighbor, page RC-69 (optional)
• Resetting Neighbors Using BGP Dynamic Inbound Soft Reset, page RC-71 (optional)
• Resetting Neighbors Using BGP Outbound Soft Reset, page RC-71 (optional)
• Resetting Neighbors Using BGP Hard Reset, page RC-72 (optional)
• Clearing Caches, Tables and Databases, page RC-73 (optional)
• Displaying System and Network Statistics, page RC-73 (optional)
• Monitoring BGP Update Groups, page RC-75 (optional)
Enabling BGP Routing
Perform this task to enable BGP routing and establish a BGP routing process. Configuring BGP
neighbors is included as part of enabling BGP routing.
Note At least one neighbor and at least one address family must be configured to enable BGP routing. At least
one neighbor with both a remote AS and an address family must be configured globally using the
address family and remote as commands.
Prerequisites
BGP must be able to obtain a router identifier (for example, a configured loopback address). At least,
one address family must be configured in the BGP router configuration and the same address family must
also be configured under the neighbor.