CLI Guide

BGP Extended Communities (RFC 4360)
BGP Extended Communities, as defined in RFC 4360, is an optional transitive BGP attribute.
BGP Extended Communities 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.
set extcommunity rt
To set Route Origin community attributes in Route Map, use this feature.
Syntax
set extcommunity rt {as4 ASN4:NN [non-trans] | ASN:NNNN [non-
trans] | IPADDR:NN [non-trans]} [additive]
To delete the Route Origin community, use the no set extcommunity
command.
Parameters
as4 ASN4:NN Enter the keyword as4 then the 4-octet AS specific
extended community number in the format ASN4:NN (4-
byte AS number:2-byte community value).
ASN:NNNN Enter the 2-octet AS specific extended community number
in the format ASN:NNNN (2-byte AS number:4-byte
community value).
IPADDR:NN Enter the IP address specific extended community in the
format IPADDR:NN (4-byte IPv4 Unicast Address:2-byte
community value).
additive (OPTIONAL) Enter the keyword additive to add to the
existing extended community.
non-trans (OPTIONAL) Enter the keywords non-trans to indicate a
non-transitive BGP extended community.
Defaults none
Command Modes ROUTE MAP (config-route-map)
Supported Modes Full–Switch
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.2(0.0) Introduced on the MXL 10/40GbE Switch IO Module.
432
Border Gateway Protocol IPv4 (BGPv4)