Reference Guide

best
Path source: I - internal, a - aggregate, c - confed-external,
r - redistributed, n - network
Origin codes: i - IGP, e - EGP, ? - incomplete
Network From Reuse Path
FTOS>
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.
deny
To reject (deny) from the two types of extended communities, route origin (rt) or site-of-origin (soo), use this feature.
Z-Series
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 Enter the keyword rt to designate a Route Origin community.
soo Enter the keyword soo to designate a Site-of-Origin community (also
known as Route Origin).
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).
Defaults Not configured.
Command Modes CONFIGURATION (conf-ext-community-list)
Command History
This guide is platform-specific. For command information about other platforms, refer to the
relevant FTOS Command Line Reference Guide .
The following is a list of the FTOS version history for this command.
Version 7.8.1.0 Introduced on the S-Series.
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