Dell Force10 S55T FTOS Command Line Reference Guide for the S55 System FTOS 8. - Page 367

BGP Extended Communities (RFC 4360) BGP Extended Communities, as defined in RFC 4360, is an optional transitive BGP attribute. It provides two major advantages over Standard Communities: • The range is extended from 4-octet (AA:NN) to 8-octet (Type:Value) to provide enough number communities. • Communities are structured using a new "Type" field (1 or 2-octets), allowing you to provide granular control/filter routing information based on the type of extended communities. The BGP Extended Community commands are: • deny • deny regex • description • ip extcommunity-list • match extcommunity • permit • permit regex • set extcommunity rt • set extcommunity soo • show ip bgp ipv4 extcommunity-list • show ip bgp paths extcommunity • show ip extcommunity-list • show running-config extcommunity-list deny c e s Use this feature to reject (deny) from the two types of extended communities, Route Origin (rt) or Site-of-Origin (soo). Syntax deny {rt | soo} {as4 ASN4:NN | ASN:NNNN | IPADDR:NN} To remove (delete) the rule, use the no deny {rt | soo} {as4 ASN4:NN | ASN:NNNN | IPADDR:NN} command. Parameters rt soo as4 ASN4:NN ASN:NNNN IPADDR:NN Enter the keyword rt to designate a Route Origin community Enter the keyword soo to designate a Site-of-Origin community (also known as Route Origin). Enter the keyword as4 followed by the 4-octet AS specific extended community number in the format ASN4:NN (4-byte AS number:2-byte community value). Enter the 2-octet AS specific extended community number in the format ASN:NNNN (2-byte AS number:4-byte community value). Enter the IP address specific extended community in the format IPADDR:NN (4-byte IPv4 Unicast Address:2-byte community value) Defaults Not configured Command Modes CONFIGURATION (conf-ext-community-list) Border Gateway Protocol IPv4(BGPv4) | 367