From: Peter Chuba (ptchuba@live.com)
Date: Wed Dec 17 2008 - 02:13:30 ARST
I had the neighbor send-community on R5. After your replies I configured the
send-community for R1s neighbor statement on R2. This produced the desired
effect.
Thanks Jonny and Hobbs
Final configs
R5
!
interface Loopback0
ip address 155.1.5.5 255.255.255.0
!
interface Serial1/0
ip address 155.1.0.5 255.255.255.0
encapsulation frame-relay
serial restart-delay 0
no dce-terminal-timing-enable
frame-relay map ip 155.1.0.2 502
no frame-relay inverse-arp
frame-relay lmi-type cisco
!
router bgp 1
no synchronization
bgp log-neighbor-changes
network 155.1.5.0 mask 255.255.255.0
neighbor 155.1.0.2 remote-as 2
neighbor 155.1.0.2 send-community
neighbor 155.1.0.2 route-map COMMUNITY out
no auto-summary
!
route-map COMMUNITY permit 10
set community no-export
!
R2
interface Serial1/0
ip address 155.1.0.2 255.255.255.0
encapsulation frame-relay
serial restart-delay 0
no dce-terminal-timing-enable
frame-relay map ip 155.1.0.5 205
no frame-relay inverse-arp
frame-relay lmi-type cisco
!
interface Serial1/1
ip address 155.1.23.2 255.255.255.0
serial restart-delay 0
no dce-terminal-timing-enable
!
router eigrp 2
redistribute connected metric 1 1 1 1 1
network 155.1.23.0 0.0.0.255
auto-summary
!
router bgp 2
no synchronization
bgp log-neighbor-changes
neighbor 155.1.0.5 remote-as 1
neighbor 155.1.13.1 remote-as 2
neighbor 155.1.13.1 send-community
neighbor 155.1.23.3 remote-as 2
no auto-summary
R1
interface FastEthernet0/0
ip address 155.1.146.1 255.255.255.0
duplex auto
speed auto
!
interface Serial1/1
ip address 155.1.13.1 255.255.255.0
serial restart-delay 0
no dce-terminal-timing-enable
!
!
router eigrp 2
redistribute connected metric 1 1 1 1 1
network 155.1.13.0 0.0.0.255
auto-summary
!
router bgp 2
no synchronization
bgp log-neighbor-changes
neighbor 155.1.13.3 remote-as 2
neighbor 155.1.23.2 remote-as 2
neighbor 155.1.146.4 remote-as 3
no auto-summary
!
From: Jonny English [mailto:redkidneybeans@gmail.com]
Sent: Wednesday, December 17, 2008 4:51 AM
To: Peter Chuba
Cc: ccielab@groupstudy.com
Subject: Re: BGP community no-export confusion
Do you have the send-community keyword?
Can we see your configs please.
On Wed, Dec 17, 2008 at 4:40 PM, Peter Chuba <ptchuba@live.com> wrote:
Hi experts, I need a little help. I've got this setup
R4-----R1-----R3-------R2-----R5
R4 is in AS3, R1,3,2 are in AS2 and R5 in AS1
On R5 I set the bgp community no-export for all routes advertised to R2. I
see the attribute on the routes in R2 but yet the routes get advertised to
R4 in AS3. I checked R1 and it has the routes without the attribute. I
thought this attribute was still supposed to be on the routes when
advertised to iBGP neighbors?
Thanks
Peter
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