Dell Force10 S25N-S50N FTOS Command Line Reference Guide FTOS 8.4.2.7 E-Series - Page 315

12 Border Gateway Protocol IPv4 (BGPv4) Overview BGPv4 is supported as shown in the following table. FTOS version 8.1.1.0 7.8.1.0 7.7.1.0. pre-7.7.1.0 Platform support E-Series ExaScale S-Series C-Series E-Series TeraScale ex s c et For detailed information on configuring BGP, refer to the BGP chapter in the FTOS Configuration Guide. This chapter contains the following sections: • BGPv4 Commands • MBGP Commands • BGP Extended Communities (RFC 4360) 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. Border Gateway Protocol IPv4 (BGPv4) | 315