Re: BGP backdoor

Srinivas,
the AD of the route that is there is 20, so the problem seems to be that
backdoor is not kicking in.

srinivas pv @ 3/9/2010 9:38 -0300 dixit:
> 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
>>
>>
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