Administrator Guide

Usage
Information
Like standard communities, you can use extended communities in the route-map to match the attribute.
Example
Dell(config-route-map)#match extcommunity Freedombird
Dell(config-route-map)#
permit
To add rules (permit) from the two types of extended communities, Route Origin (rt) or Site-of-Origin (soo), use this feature.
Z-Series
Syntax
permit {rt | soo} {as4 ASN4:NN | ASN:NNNN | IPADDR:NN}
To change the rules, use the no permit {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 Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version 7.8.1.0 Introduced on the S-Series.
Version 7.7.1.0 Introduced on the C-Series.
Version 7.6.1.0 Introduced on the E-Series.
Related
Commands
deny — configures to delete (deny) rules.
show ip bgp extcommunity-list — displays the extended community list.
permit regex
This feature allows you specify an extended community to forward (permit) using a regular expression (regex).
Z-Series
Syntax
permit regex {regex}
To remove, use the no permit regex {regex} command.
Parameters
regex Enter a regular expression.
Border Gateway Protocol 365