Re: AToM

Hi Mohammed

1st Check that the pseudowire is up
    sh mpls l2vpn xconnect vc xx detail

Also check for MTU on the point to point to point interfaces

The PW should be up between the PEs and before you go any further. Try to
use mtu 1504 on the CEs
on all the four points between PE-CE on boths sides

HTH

On Fri, Dec 21, 2012 at 10:18 AM, Shaughn <maniac.smg_at_gmail.com> wrote:

> 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,
> >>>
> >>>
> >>> 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
> >>>
> >>> _______________________________________________________________________
> >>> Subscription information may be found at:
> >>> http://www.groupstudy.com/list/CCIELab.html
> >>
> >>
> >> 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
> >
> > _______________________________________________________________________
> > Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
>
>
> 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 Dec 21 2012 - 10:35:15 ART