Specifications

iii
Cisco IOS XR Routing Configuration Guide
CONTENTS
Preface xiii
Changes to This Document xiii
Obtaining Documentation, Obtaining Support, and Security Guidelines xiii
Implementing BGP on Cisco IOS XR Software RC-1
Contents RC-2
Prerequisites for Implementing BGP on Cisco IOS XR Software RC-2
Information About Implementing BGP on Cisco IOS XR Software RC-2
BGP Functional Overview RC-3
BGP Router Identifier RC-4
BGP Default Limits RC-4
BGP Next Hop Tracking RC-5
Autonomous System Number Formats in BGP RC-7
BGP Configuration RC-7
No Default Address Family RC-19
Routing Policy Enforcement RC-20
Table Policy RC-21
Update Groups RC-22
BGP Cost Community RC-22
BGP Best Path Algorithm RC-27
Administrative Distance RC-30
Multiprotocol BGP RC-32
Route Dampening RC-33
BGP Routing Domain Confederation RC-34
BGP Route Reflectors RC-34
Default Address Family for show Commands RC-37
Distributed BGP RC-37
MPLS VPN Carrier Supporting Carrier RC-39
BGP Keychains RC-39
IPv6/IPv6 VPN Provider Edge Transport over MPLS RC-39
VPNv4/VPNv6 over the IP Core Using L2TPv3 Tunnels RC-40
How to Implement BGP on Cisco IOS XR Software RC-43
Enabling BGP Routing RC-44
Configuring a Routing Domain Confederation for BGP RC-47
Resetting eBGP Session Immediately Upon Link Failure RC-49