Users Guide
BGP Extended Communities (RFC 4360)
BGP Extended Communities, as dened 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” eld (1 or 2-octets), allowing you to provide granular control/lter routing
information based on the type of extended communities.
set extcommunity rt
To set Route Origin community attributes in Route Map, use this feature.
S4820T
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 specic extended community number
in the format ASN4:NN (4-byte AS number:2-byte community value).
ASN:NNNN Enter the 2-octet AS specic extended community number in the format
ASN:NNNN (2-byte AS number:4-byte community value).
IPADDR:NN Enter the IP address specic 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 (cong-route-map)
Command History
This guide is platform-specic. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.2(1.0) Introduced on the Z9500.
8.3.19.0 Introduced on the S4820T
8.3.11.1 Introduced on the Z-9000.
8.3.7.0 Introduced on the S4810.
7.8.1.0 Introduced on the S-Series.
7.7.1.0 Introduced on the C-Series.
Border Gateway Protocol
467