Ip Community-List - Edge-Core AS6700-32X Cli Reference Manual

Chapter 29
| IP Routing Commands
Border Gateway Protocol (BGPv4)

ip community-list

Example
The regular expression in this example uses symbols which instruct the filter to
match the character or null string at the beginning and end of an input string.
Console(config-router)#ip as-path access-list RD deny ^100$
Console(config-router)#
Related Commands
neighbor filter-list (958)
match as-path (996)
This command configures a community access list. Use the no form with only the
access list name to disable its use, or with all parameters to remove a community
attribute from the access list.
Syntax
[no] ip community-list
{1-99 | standard community-list-name {deny | permit}
[AA:NN] [internet] [local-as] [no-advertise] [no-export]} | {100-500 |
expanded community-list-name {deny | permit} regular-expression}
1-99 – Standard community list number that identifies one or more groups
of communities.
standard community-list-name – Name of standard access list. A maximum
of 16 communities can be configured in a standard community list
(Maximum length: 32 characters, no spaces or other special characters)
deny – Denies access to messages with matching community attribute.
permit – Permits access for messages with matching community attribute.
AA:NN – Standard community-number to deny or permit. The 4-byte
community number is composed of a 2-byte autonomous system number
and a 2-byte network number, separated by one colon. Each 2-byte
number can range from 0 to 65535. One or more communities can be
entered, separated by a space. Up to 16 community numbers are
supported.
internet – Specifies the entire Internet. Routes with this community
attribute are advertised to all internal and external peers.
local-as – Specifies the local autonomous system. Routes with this
community attribute are advertised only to peers that are part of the local
autonomous system or to peers within a sub-autonomous system of a
confederation. These routes are not advertised to external peers or to other
sub-autonomous systems within a confederation.
no-advertise – Routes with this community attribute are not advertised to
any internal or external peer.
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