Dell Force10 S4820T FTOS Command Reference Guide - Page 304

www.dell.com | support.dell.com BGPv4 Commands Border Gateway Protocol (BGP) is an external gateway protocol that transmits interdomain routing information within and between Autonomous Systems (AS). BGP version 4 (BGPv4) supports Classless InterDomain Routing (CIDR) and the aggregation of routes and AS paths. Basically, two routers (called neighbors or peers) exchange information including full routing tables and periodically send messages to update those routing tables. Note: FTOS Version 7.7.1 supports 2-Byte (16-bit) and 4-Byte (32-bit) format for Autonomous System Numbers (ASNs), where the 2-Byte format is 1-65535, the 4-Byte format is 1-4294967295. Note: FTOS Version 8.3.1.0 supports Dotted format as well as the Traditional Plain format for AS Numbers. The dot format is displayed when using the show ip bgp commands. To determine the comparable dot format for an ASN from a traditional format, use ASN/65536. ASN%65536. For more information about using the 2 or 4-Byte format, refer to the FTOS Configuration Guide. The following commands enable you to configure and enable BGP. • address-family • aggregate-address • bgp add-path • bgp always-compare-med • bgp asnotation • bgp bestpath as-path ignore • bgp bestpath as-path multipath-relax • bgp bestpath med confed • bgp bestpath med missing-as-best • bgp bestpath router-id ignore • bgp client-to-client reflection • bgp cluster-id • bgp confederation identifier • bgp confederation peers • bgp dampening • bgp default local-preference • bgp enforce-first-as • bgp fast-external-fallover • bgp four-octet-as-support • bgp graceful-restart • bgp log-neighbor-changes • bgp non-deterministic-med 304 | Border Gateway Protocol IPv4 (BGPv4)