Dell Force10 S4810P Configuration Manual page 221

Use these commands in the following sequence, starting in the CONFIGURATION mode, To use an IP
Community list or Extended Community List to filter routes, you must apply a
a route map and then apply that route map to a BGP neighbor or peer group.
Step Command Syntax
1 route-map map-name [ permit |
deny ] [sequence-number]
2
match { community
community-list-name [ exact ] |
extcommunity
extcommunity-list-name [ exact ]}
3 exit
4
router bgp as-number
5
neighbor {ip-address |
peer-group-name} route-map
map-name { in | out }
To view the BGP configuration, use the
mode. To view a route map configuration, use the
To view which BGP routes meet an IP Community or Extended Community list' s criteria, use the
{
bgp community-list | extcommunity-list} command
Manipulate the COMMUNITY attribute
In addition to permitting or denying routes based on the values of the COMMUNITY attributes, you can
manipulate the COMMUNITY attribute value and send the COMMUNITY attribute with the route
information.
By default, FTOS does not send the COMMUNITY attribute.
Use the following command in the CONFIGURATION ROUTER BGP mode to send the COMMUNITY
attribute to BGP neighbors.
Command Syntax
neighbor {ip-address |
peer-group-name} send-community
To view the BGP configuration, use the
mode.
Command Mode
CONFIGURATION
CONFIG-ROUTE-MAP
CONFIG-ROUTE-MAP
CONFIGURATION
CONFIG-ROUTER-BGP
command in CONFIGURATION ROUTER BGP
show config
show route-map
in EXEC Privilege mode.
Command Mode
CONFIG-ROUTER-BGP
command in the CONFIGURA TION ROUTER BGP
show config
match community
Purpose
Enter the ROUTE-MAP mode and assign a
name to a route map.
Configure a match filter for all routes
meeting the criteria in the IP Community or
Extended Community list.
Return to the CONFIGURATION mode.
Enter the ROUTER BGP mode.
AS-number: 0-65535 (2-Byte) or
1-4294967295 (4-Byte) or
0.1-65535.65535 (Dotted format)
Apply the route map to the neighbor or peer
group's incoming or outgoing routes.
command in EXEC Privilege mode.
Purpose
Enable the software to send the router's
COMMUNITY attribute to the BGP neighbor
or peer group specified.
Border Gateway Protocol | 221
filter to
show ip