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•
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 and are not sent
to EBGP peers.
•
no-advertise: routes with the COMMUNITY attribute of NO_ADVERTISE and are not advertised.
•
no-export: routes with the COMMUNITY attribute of NO_EXPORT.
•
none: remove the COMMUNITY attribute.
•
additive: add the communities to already existing communities.
3
Return to CONFIGURATION mode.
CONFIG-ROUTE-MAP mode
exit
4
Enter the ROUTER BGP mode.
CONFIGURATION mode
router bgp as-number
5
Apply the route map to the neighbor or peer group's incoming or outgoing routes.
CONFIG-ROUTER-BGP mode
neighbor {ip-address | peer-group-name} route-map map-name {in | out}
Example of the show ip bgp community Command
To view the BGP configuration, use the show config command in CONFIGURATION ROUTER BGP mode.
To view a route map configuration, use the show route-map command in EXEC Privilege mode.
To view BGP routes matching a certain community number or a pre-defined BGP community, use the show
ip bgp community command in EXEC Privilege mode.
Dell>show ip bgp community
BGP table version is 3762622, local router ID is 10.114.8.48
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal
Origin codes: i - IGP, e - EGP, ? - incomplete
Network
* i 3.0.0.0/8
*>i 4.2.49.12/30
* i 4.21.132.0/23
*>i 4.24.118.16/30 195.171.0.16
*>i 4.24.145.0/30
*>i 4.24.187.12/30 195.171.0.16
*>i 4.24.202.0/30
*>i 4.25.88.0/30
*>i 6.1.0.0/16
*>i 6.2.0.0/22
*>i 6.3.0.0/18
*>i 6.4.0.0/16
*>i 6.5.0.0/19
*>i 6.8.0.0/20
*>i 6.9.0.0/20
*>i 6.10.0.0/15
*>i 6.14.0.0/15
*>i 6.133.0.0/21
*>i 6.151.0.0/16
--More--
Next Hop
Metric
195.171.0.16
195.171.0.16
195.171.0.16
195.171.0.16
195.171.0.16
195.171.0.16
195.171.0.16
195.171.0.16
195.171.0.16
195.171.0.16
195.171.0.16
195.171.0.16
195.171.0.16
195.171.0.16
205.171.0.16
205.171.0.16
205.171.0.16
LocPrf Weight Path
100
0
209 701 80 i
100
0
209 i
100
0
209 6461 16422 i
100
0
209 i
100
0
209 i
100
0
209 i
100
0
209 i
100
0
209 3561 3908 i
100
0
209 7170 1455 i
100
0
209 7170 1455 i
100
0
209 7170 1455 i
100
0
209 7170 1455 i
100
0
209 7170 1455 i
100
0
209 7170 1455 i
100
0
209 7170 1455 i
100
0
209 7170 1455 i
100
0
209 7170 1455 i
100
0
209 7170 1455 i
100
0
209 7170 1455 i
Border Gateway Protocol IPv4 (BGPv4)
232
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Troubleshooting
