Dell Force10 Z9000 FTOS Configuration Guide for Z9000 System - Page 205

• All routes with the NO_EXPORT_SUBCONFED (0xFFFFFF03) community attribute are not sent to CONFED-EBGP or EBGP peers, but are sent to IBGP peers within CONFED-SUB-AS. • All routes with the NO_ADVERTISE (0xFFFFFF02) community attribute must not be advertised. • All routes with the NO_EXPORT (0xFFFFFF01) community attribute must not be advertised outside a BGP confederation boundary, but are sent to CONFED-EBGP and IBGP peers. FTOS also supports BGP Extended Communities as described in RFC 4360-BGP Extended Communities Attribute. Use these commands in the following sequence, starting in the CONFIGURATION mode to configure an IP community list. Step Command Syntax 1 ip community-list community-list-name 2 {deny | permit} {community-number | local-AS | no-advertise | no-export | quote-regexp regular-expression-list | regexp regular-expression} Command Mode Purpose CONFIGURATION Create a Community list and enter the COMMUNITY-LIST mode. CONFIG-COMMUNITYLIST Configure a Community list by denying or permitting specific community numbers or types of community • community-number: use AA:NN format where AA is the AS number (2 or 4 Bytes) and NN is a value specific to that autonomous system. • local-AS: routes with the COMMUNITY attribute of NO_EXPORT_SUBCONFED. • no-advertise: routes with the COMMUNITY attribute of NO_ADVERTISE. • no-export: routes with the COMMUNITY attribute of NO_EXPORT. • quote-regexp: followed by any number of regular expressions. The software applies all regular expressions in the list. • regexp: followed by a regular expression. Use these commands in the following sequence, starting in the CONFIGURATION mode to configure an IP extended community list. Step Command Syntax 1 ip extcommunity-list extcommunity-list-name Command Mode CONFIGURATION Purpose Create a extended community list and enter the EXTCOMMUNITY-LIST mode. Border Gateway Protocol | 205