OSPF to BGP set community

[Support ACME]

Dear ALL,

I can use the "table-map SetTag" in BGP configuration for match community ,then set the tag number, it works. but how to apply the

route -map

to match tag number, then set the community.

Below is my configuration.

ip community-list 2 permit 2000
ip community-list 3 permit 2100
ip community-list 4 permit 2300
ip community-list 5 permit 1000
!
route-map SetTag permit 10
match community 2
set tag 2000
!
route-map SetTag permit 20
match community 3
set tag 2100
!
route-map SetTag permit 30
match tag 64520
set community 5

Support@ACMEHK

[Georg Pauwen]

Hello,

I am not sure exactly what you are looking for. The below does not work ?

route-map SetTag permit 30
match tag 64520
set community 5

[Harold Ritter · Accepted solution]

Hi @Support ACME ,

You should configure a separate

route-map

and use it when redistributing from ospf to bgp, as follow:

route-map ospf2bgp permit 10
match tag 64520
set community xxx:xxx




router bgp xxx

address-family ipv4 unicast

redistribute ospf xxx route-map ospf2bgp

Regards,

[Support ACME]

one more thing, how to use the old ＢＧＰ community format? i had set the community is 1000, but the fortinet recevied is 0:1000.

tw#show ip bgp 99.151.144.0
BGP routing table entry for 99.151.144.0/24, version 10
Paths: (1 available, best #1, table Default-IP-Routing-Table)
Advertised to update-groups:
1
Local
192.168.10.1 from 0.0.0.0 (10.255.255.10)
Origin incomplete, metric 2, localpref 100, weight 32768, valid, sourced,
best
Community: 1000







TW # get router info bgp network 99.151.144.0
VRF 0 BGP routing table entry for 99.151.144.0/24
Paths: (1 available, best #1, table Default-IP-Routing-Table)
Advertised to non peer-group peers:
169.254.218.13
Original VRF 0
65532
10.194.0.254 from 10.194.0.254 (10.255.255.10)
Origin incomplete metric 2, localpref 100, weight 100, valid, external, best
Community: 0:1000
Last update: Thu Jun 16 01:56:41 2022

Ｓupport@ＡＣＭＥＨＫ

[Harold Ritter]

Hi @Support ACME ,

You need to configure "ip bgp new-format" to use the xxx:xxx format and "no ip bgp new-format" to use the decimal value. This only affects the local display though. The fortinet will still receive it as xxx:xxx, which is the standard format.

Regards,