Cisco Cisco ASR 5700
Context Configuration Mode Commands I-M
ip community-list ▀
Command Line Interface Reference, StarOS Release 17 ▄
2521
internet – Advertise this route to the internet community, and any router that belongs to it.
local-AS – Use in confederation scenarios to prevent sending packets outside the local autonomous
system (AS).
no-advertise – Do not advertise this route to any BGP peer, internal or external.
no-export – Do not advertise to external BGP (eBGP) peers. Keep this route within an AS.
value
AS-community_number
– Specifies a community string in AS:NN format, where AS = 2-byte
AS-community hexadecimal number and NN = 2-byte hexadecimal number (1 to 11 characters).
You can enter multiple destinations and AS community numbers separated by spaces.
Usage
Configures filtering via a BGP community list. To filter by a BGP community, you must then match the
community in a route-map.
Multiple community-list entries can be attached to a community-list by adding multiple permit or deny
clauses for various community strings. Up to 64 community-lists can be configured in a context.
The communities-list is a way to group destinations into communities and apply routing decisions based on
the communities. This method simplifies the configuration of a BGP speaker that controls distribution of
routing information.
A community is a group of destinations that share some common attribute. Each destination can belong to
multiple communities. Autonomous system administrators define to which communities a destination
belongs.
community in a route-map.
Multiple community-list entries can be attached to a community-list by adding multiple permit or deny
clauses for various community strings. Up to 64 community-lists can be configured in a context.
The communities-list is a way to group destinations into communities and apply routing decisions based on
the communities. This method simplifies the configuration of a BGP speaker that controls distribution of
routing information.
A community is a group of destinations that share some common attribute. Each destination can belong to
multiple communities. Autonomous system administrators define to which communities a destination
belongs.
Example
The following command specifies that community list number 5 will permit access to AS destination 200:5.
ip community-list standard 5 permit value 200:5