BGP Community Local AS
** Before**
R2#show ip bgp
BGP routing table information for VRF default
Router identifier 2.2.2.2, local AS number 23
Route status codes: * - valid, > - active, # - not installed, E - ECMP head, e - ECMP
S - Stale, c - Contributing to ECMP, b - backup, L - labeled-unicast
Origin codes: i - IGP, e - EGP, ? - incomplete
AS Path Attributes: Or-ID - Originator ID, C-LST - Cluster List, LL Nexthop - Link Local Nexthop
Network Next Hop Metric LocPref Weight Path
* > 1.1.1.1/32 192.168.12.1 0 100 0 1 i
R2#
R3(config-if-Et3)#show ip bgp
BGP routing table information for VRF default
Router identifier 3.3.3.3, local AS number 23
Route status codes: * - valid, > - active, # - not installed, E - ECMP head, e - ECMP
S - Stale, c - Contributing to ECMP, b - backup, L - labeled-unicast
Origin codes: i - IGP, e - EGP, ? - incomplete
AS Path Attributes: Or-ID - Originator ID, C-LST - Cluster List, LL Nexthop - Link Local Nexthop
Network Next Hop Metric LocPref Weight Path
* > 1.1.1.1/32 192.168.12.1 0 100 0 1 i
R4#show ip bgp
BGP routing table information for VRF default
Router identifier 4.4.4.4, local AS number 45
Route status codes: * - valid, > - active, # - not installed, E - ECMP head, e - ECMP
S - Stale, c - Contributing to ECMP, b - backup, L - labeled-unicast
Origin codes: i - IGP, e - EGP, ? - incomplete
AS Path Attributes: Or-ID - Originator ID, C-LST - Cluster List, LL Nexthop - Link Local Nexthop
Network Next Hop Metric LocPref Weight Path
* > 1.1.1.1/32 192.168.12.1 0 100 0 (23) 1 i
* 1.1.1.1/32 192.168.12.1 0 100 0 (23) 1 i
R4#
R5(config-router-bgp)#show ip bgp
BGP routing table information for VRF default
Router identifier 5.5.5.5, local AS number 45
Route status codes: * - valid, > - active, # - not installed, E - ECMP head, e - ECMP
S - Stale, c - Contributing to ECMP, b - backup, L - labeled-unicast
Origin codes: i - IGP, e - EGP, ? - incomplete
AS Path Attributes: Or-ID - Originator ID, C-LST - Cluster List, LL Nexthop - Link Local Nexthop
Network Next Hop Metric LocPref Weight Path
* > 1.1.1.1/32 192.168.12.1 0 100 0 (23) 1 i
* 1.1.1.1/32 192.168.12.1 0 100 0 (23) 1 i
R6(config-if-Et1)#show ip bgp
BGP routing table information for VRF default
Router identifier 192.168.36.6, local AS number 6
Route status codes: * - valid, > - active, # - not installed, E - ECMP head, e - ECMP
S - Stale, c - Contributing to ECMP, b - backup, L - labeled-unicast
Origin codes: i - IGP, e - EGP, ? - incomplete
AS Path Attributes: Or-ID - Originator ID, C-LST - Cluster List, LL Nexthop - Link Local Nexthop
Network Next Hop Metric LocPref Weight Path
* > 1.1.1.1/32 192.168.36.3 0 100 0 2345 1 i
+ local as community
R2#conf t
R2(config)#route-map LOCAL-AS permit 10
R2(config-route-map-LOCAL-AS)#set community ?
GSHUT Graceful Shutdown (well-known community)
aa:nn Community number
community-list Community-list
internet Internet (well-known community)
local-as Do not send outside local AS
no-advertise Do not advertise to any peer
no-export Do not export to next AS
none No community attribute
remove Remove specified communities from route-map
<1-4294967040> Community number
R2(config-route-map-LOCAL-AS)#set community local-as
R2(config-route-map-LOCAL-AS)#router bgp 23
R2(config-router-bgp)#neighbor 192.168.12.1 route-map LOCAL-AS in
R2(config-router-bgp)#show ip bgp 1.1.1.1
BGP routing table information for VRF default
Router identifier 2.2.2.2, local AS number 23
BGP routing table entry for 1.1.1.1/32
Paths: 1 available
1
192.168.12.1 from 192.168.12.1 (1.1.1.1)
Origin IGP, metric 0, localpref 100, IGP metric 1, weight 0, received 1d20h ago, valid, external, best
Community: local-as
Rx SAFI: Unicast
R2(config-router-bgp)#