Re: AToM

There could be multiple reasons for that. Paste your configs

CCIE # 23962 (SP)

Sent from my iPhone

On 21 Dec 2012, at 12:01 AM, Mohammad Khalil <eng_mssk_at_hotmail.com> wrote:

> Hi all and thanks for the replies
> What I am thinking of is that when i configure xconnect on the serial connection its line protocol is down
> Let us forget about POS interface because the same case i am facing on the serial interface
>
> BR,
>
>> From: markom_at_ipexpert.com
>> Date: Thu, 20 Dec 2012 09:02:52 -0800
>> Subject: Re: AToM
>> To: amsoares_at_netcabo.pt
>> CC: eng_mssk_at_hotmail.com; ccielab_at_groupstudy.com
>>
>> I don't think interworking is at play here, as at L2 it doesn't matter
>> whether he's using Serial, POS or HSSI interfaces, as long the
>> encapsulation matches.
>>
>> --
>> Marko Milivojevic - CCIE #18427 (SP R&S)
>> Senior CCIE Instructor - IPexpert
>>
>> On Thu, Dec 20, 2012 at 8:26 AM, Antonio Soares <amsoares_at_netcabo.pt> wrote:
>>> You need to read about AToM Interworking, basically when you are mixing
>>> different encapsulation types you need to change your AToM configuration.
>>> Check this from the 12.2SR documentation:
>>>
>>> http://www.cisco.com/en/US/docs/ios/mpls/configuration/guide/mp_l2vpn_intrnt
>>> wkg_external_docbase_0900e4b1805ddd73_4container_external_docbase_0900e4b180
>>> 6a218a.html
>>>
>>>
>>>
>>> Regards,
>>>
>>> Antonio Soares, CCIE #18473 (R&S/SP)
>>> amsoares_at_netcabo.pt
>>> http://www.ccie18473.net
>>>
>>>
>>> -----Original Message-----
>>> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
>>> Mohammad Khalil
>>> Sent: quinta-feira, 20 de Dezembro de 2012 07:16
>>> To: ccielab_at_groupstudy.com
>>> Subject: AToM
>>>
>>> Hi all
>>> I am using GNS3 to simulate some AToM scenarios My topology is R1 -- R2 --
>>> R3 -- R4 -- R5 Where R1 and R5 are my CE routers When i am using
>>> fastethernet all over the network everything is working normally and i
>>> established OSPF between the CEs without issues now , i changed the
>>> connection between R1 and R2 to Serial and between R4 and R5 to POS Now the
>>> issue is when i configure the xconnect command on R2 , R1's s1/0 becomes up
>>> down R1#sh int s1/0 | inc line
>>> Serial1/0 is up, line protocol
>>> is down
>>> I changed both encapsulations (PPP and HDLC) without solving The same is
>>> happening on POS interface R5#sh int pos1/0 | inc linePOS1/0 is up, line
>>> protocol is down
>>>
>>> Thanks in
>>> advance
>>>
>>> BR,
>>>
>>>
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Received on Fri Dec 21 2012 - 09:18:55 ART