[j-nsp] Issue with MPLS VPN when using mixed LDP and RSVP Backbone !

[vaibhava varma]

Hi Diogo


> - verify the status of the routes in PE4. Are they being received by
> the BGP neighbor ? Check the protocol NH status.

Routes are not received by BGP neighbour and I verified this "show
route receive-protcol bgp x.x.x.x(PE2/RR)
>
> - you need to have an LSP between the PE1 and your RR. Same for PE4
> and RR. But I am assuming this is fine because you see the routes
> being advertised to PE4 from PE2.

Yes PE2/RR is advertising routes to PE4 and I have verified this with
""show route advertising-protcol bgp x.x.x.x(PE4)

>
> - on PE4, you need to have a LDP route for PE1. I think this may be
> your issue and this is why I suggested to check with the ping mpls ldp
> command.
I have the LDP route for PE1 on PE4 and have verified it under the
inet.3 table. I am yet to check the ping mpls ldp part and will come
back on that.

I am still unclear that do we really need an LSP to the RR as RR will
not overide the NH to itself while reflection ?

Regards
Varma

On Wed, Jul 11, 2012 at 9:26 PM, Diogo Montagner
<diogo.montagner at gmail.com> wrote:
> Hi,
>
> I suggest some steps below:
>
> - verify the status of the routes in PE4. Are they being received by
> the BGP neighbor ? Check the protocol NH status.
>
> - you need to have an LSP between the PE1 and your RR. Same for PE4
> and RR. But I am assuming this is fine because you see the routes
> being advertised to PE4 from PE2.
>
> - on PE4, you need to have a LDP route for PE1. I think this may be
> your issue and this is why I suggested to check with the ping mpls ldp
> command.
>
> Thanks
>
> On 7/11/12, vaibhava varma <svaibhava at gmail.com> wrote:
>> Hi Diogo
>>
>> They are not hidden and have already verified the route-target.Its
>> correctly configured. Any other pointer ?
>>
>> Also while using RR do we reallly need the Loopback IP of RR used for
>> BGP peering to be present in the inet.3 table of PE coz the RR just
>> reflects the route and does not modifies the NH. All we should need is
>> the reachability of the remote PE Loopback IP used for BGP Peering to
>> be in the inet.3 at the Local PE. Is that correct ?
>>
>> Thanks much for your help on this issue.
>>
>> Regards
>> Varma
>>
>> On Wed, Jul 11, 2012 at 9:07 PM, Diogo Montagner
>> <diogo.montagner at gmail.com> wrote:
>>> You need check the status of the routes in PE4. If they are hidden it
>>> may be a LDP issue. If there is no hidden route then your problem may
>>> be wrong route-target selection.
>>>
>>> Thanks
>>>
>>> On 7/11/12, vaibhava varma <svaibhava at gmail.com> wrote:
>>>> Hi Diogo
>>>>
>>>> I have not checked that yet but what I did check was that PE2/RR is
>>>> advertising the route via BGP to PE4 and PE4 is not accepting it.
>>>> Right now I do not have access to the setup.
>>>>
>>>> Please suggest where can be the issue and what more to check apart
>>>> from the one you mentioned and I will check and revert in sometime.
>>>>
>>>> Regards
>>>> Varma
>>>>
>>>> On Wed, Jul 11, 2012 at 8:31 PM, Diogo Montagner
>>>> <diogo.montagner at gmail.com> wrote:
>>>>> What happens if you do a ping mpls ldp from PE4-lo0 to PE1-lo0 ?
>>>>>
>>>>> On 7/11/12, vaibhava varma <svaibhava at gmail.com> wrote:
>>>>>> Dear All
>>>>>>
>>>>>> I was testing a setup whereby I am using mix of LDP and RSVP in the
>>>>>> backbone for transporting MPLS VPN Traffic. The setup is something as
>>>>>> below:
>>>>>>
>>>>>> CE1--PE1------PE2/RR-------PE3----PE4------CE2
>>>>>>
>>>>>> Now we have a limitation that we can only run LDP between PE4 and PE3.
>>>>>> From PE3 to PE2/RR we have RSVP. From PE3 to PE1 we have LDP Tunneling
>>>>>> over RSVP.
>>>>>>
>>>>>> Now the routes of CE1 are not getting installed into the VRF Table on
>>>>>> PE4. When checked the inet.3 table I do not see the route for PE2/RR
>>>>>> Loopback but only PE1 and PE3.
>>>>>> I tried to add a default static into inet.3 or importing the inet.0
>>>>>> rib to inet.3 on PE4 but still am not seeing routes.
>>>>>>
>>>>>> I think the issue is that the BGP Next Hop is not in inet.3 for
>>>>>> PE2/RR. How can I achieve to make this setup working apart from
>>>>>> running LDP Tunneling over RSVP between PE4& PE2/RR or between PE3 &
>>>>>> PE2/RR.
>>>>>>
>>>>>> --
>>>>>> Regards
>>>>>> Vaibhava Varma
>>>>>> _______________________________________________
>>>>>> juniper-nsp mailing list juniper-nsp at puck.nether.net
>>>>>> https://puck.nether.net/mailman/listinfo/juniper-nsp
>>>>>>
>>>>>
>>>>> --
>>>>> Sent from my mobile device
>>>>>
>>>>> ./diogo -montagner
>>>>> JNCIE-M 0x41A
>>>>
>>>>
>>>>
>>>> --
>>>> Regards
>>>> Vaibhava Varma
>>>>
>>>
>>> --
>>> Sent from my mobile device
>>>
>>> ./diogo -montagner
>>> JNCIE-M 0x41A
>>
>>
>>
>> --
>> Regards
>> Vaibhava Varma
>>
>
> --
> Sent from my mobile device
>
> ./diogo -montagner
> JNCIE-M 0x41A



-- 
Regards
Vaibhava Varma