Re: BGP backdoor

Hi,

I think CE routes are not getting propagated through RIP. Could you try
shutting down interfaces between CE and PE, so that you should see routes
through RIP.

Thanks,
Srinivas

On Fri, Sep 3, 2010 at 11:09 AM, selamat pagi <ketimun_at_gmail.com> wrote:

> Trying to understand the usage of backdoor command in BGP.
>
> This is my Lab-setup. With the neigbors-loopbacks configured as backdoor,
> I
> would expect to see CE7 lo on CE8 as a RIP-route.
> But I still get the eBGP route vie PE.
>
> ------------------------------------RIP ----------------------------------
> |
> |
> CE7 -- eBGP --- PE2 --- MPLS --- PE5 -- eBGP -- CE8
>
>
> CE7
> interface Loopback0
> ip address 10.5.7.7 255.255.255.0
>
> router bgp 200
> no synchronization
> bgp router-id 10.5.7.7
> bgp log-neighbor-changes
> network 10.5.7.0 mask 255.255.255.0
> network 10.5.8.0 mask 255.255.255.0 backdoor
> neighbor 10.5.27.2 remote-as 100
> neighbor 10.5.27.2 allowas-in
>
>
> CE8
> interface Loopback0
> ip address 10.5.8.8 255.255.255.0
>
> router bgp 200
> bgp router-id 10.5.8.8
> network 10.5.7.0 mask 255.255.255.0 backdoor
> network 10.5.8.0 mask 255.255.255.0
> neighbor 10.5.58.5 remote-as 100
> neighbor 10.5.58.5 allowas-in
>
>
> R8#sh ip route
> 158.5.0.0/32 is subnetted, 1 subnets
> B 158.5.6.6 [20/0] via 10.5.58.5, 14:53:51
> 10.0.0.0/24 is subnetted, 5 subnets
> C 10.5.8.0 is directly connected, Loopback0
> B 10.5.7.0 [20/0] via 10.5.58.5, 00:00:06 <-- would expect to
> get this via RIP
> R 10.5.27.0 [120/1] via 10.5.78.7, 00:00:18, Vlan78
> C 10.5.58.0 is directly connected, Vlan58
> C 10.5.78.0 is directly connected, Vlan78
>
>
> What do I miss here ?
>
> Thanks, keti
>
>
>
>
> http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a00800c95bb.shtml#bgpbackdoor
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html

Blogs and organic groups at http://www.ccie.net
Received on Fri Sep 03 2010 - 18:08:23 ART