User's Manual
Software Reference Supplement for SwitchBlade® x8112, x908, x900 and x610 Series Switches
C613-50032-01 REV D AlliedWare Plus
TM
Operating System - Software Version 5.4.3-2.6 1.1
Chapter 1: BGP and BGP4+ Introduction
Introduction ...........................................................................................................................................1.3
BGP and BGP4+ ASNs and AS_Path Attributes ..................................................................1.4
Internal and External BGP Concepts .............................................................................................1.5
Public and Private ASNs..............................................................................................................1.5
Outbound Routing Toward the Internet..............................................................................1.5
External BGP (eBGP) Concepts ........................................................................................................1.6
External BGP (eBGP) .....................................................................................................................1.6
Verifying BGP..................................................................................................................................1.7
Advertising eBGP routes to ISPs ..............................................................................................1.8
Internal BGP (iBGP) Concepts ..........................................................................................................1.9
iBGP between Internet connected routers..........................................................................1.9
Configuring iBGP...........................................................................................................................1.9
Verifying iBGP.............................................................................................................................. 1.10
How to configure BGP and BGP4+.............................................................................................. 1.12
Initial BGP and BGP4+ Configuration Tasks ..................................................................... 1.12
How to enable BGP and BGP4+ Routing ........................................................................... 1.12
How to configure BGP and BGP4+ Neighbors ................................................................ 1.12
BGP and BGP4+ Neighbor Route Filtering............................................................................... 1.13
BGP and BGP4+ Path Filtering by Neighbor .................................................................... 1.13
How to disable next hop processing for BGP or BGP4+ updates............................ 1.14
How to use Route Maps for BGP or BGP4+ updates ..................................................... 1.15
BGP and BGP4+ Peer Groups........................................................................................................ 1.16
How to create a Peer Group for BGP................................................................................... 1.16
How to assign options to the created Peer Group ........................................................ 1.16
How to make neighbors members of a Peer Group...................................................... 1.19
BGP and BGP4+ Prefix Lists ........................................................................................................... 1.20
How to create and configure a Prefix List for BGP or BGP4+ ..................................... 1.21
How to delete Prefix List Entries........................................................................................... 1.21
How to display IPv4 and IPv6 Prefix Entries ..................................................................... 1.22
BGP and BGP4+ Route Dampening............................................................................................ 1.23
How to enable BGP and BGP4+ Route Dampening ...................................................... 1.24
How to monitor BGP and BGP4+ Route Dampening.................................................... 1.24
BGP and BGP4+ Synchronization................................................................................................ 1.26
BGP and BGP4+ Weights ................................................................................................................ 1.27
BGP and BGP4+ Aggregate Addresses...................................................................................... 1.28
How to enable and disable Automatic Summarization............................................... 1.28
BGP and BGP4+ monitoring.......................................................................................................... 1.29
How to clear BGP and BGP4+ tables................................................................................... 1.29
How to display BGP and BGP4+ statistics ......................................................................... 1.30
BGP Neighbor status logging ....................................................................................................... 1.31
BGP Connections Reset................................................................................................................... 1.32
BGP Versions ....................................................................................................................................... 1.32
BGP Confederations ......................................................................................................................... 1.32
BGP Route Reflectors ....................................................................................................................... 1.33
BGP Community Filtering............................................................................................................... 1.34
BGP Optimization.............................................................................................................................. 1.35
How to determine Backdoor Routes................................................................................... 1.35