From: mreiks (marakalas.molefe@gmail.com)
Date: Wed Nov 26 2008 - 01:15:23 ARST
Hmm, my excitement was short-lived there. Now my multicast tunnel between
the two PE routers is broken after disabling "mpls ip" on the interfaces.
Any idea?
On Wed, Nov 26, 2008 at 5:12 AM, mreiks <marakalas.molefe@gmail.com> wrote:
> Wow, tx a lot Roman, it's working now without "mpls ip" on the SP
> interfaces. I only had the TE tunnel configured only on the one PE. Much
> appreciated.
>
>
> On Wed, Nov 26, 2008 at 4:38 AM, Roman Rodichev <roman@iementor.com>wrote:
>
>> Hello,
>>
>> You don't need LDP in order to run MPLS VPN over TE tunnels. When you say
>> you "disable LDP on the interfaces", I assume you are disabling "mpls ip"
>> on
>> the physical interfaces. In a simple CE1 - PE1 - P - PE2 - CE2 network,
>> make
>> sure you have a TE tunnel from PE1 to PE2 and from PE2 to PE1. Make sure
>> you
>> are using "tunnel mpls traff autoroute announce" so that PE1 and PE2
>> loopbacks are reachable via TE tunnels instead of the IGP path. You can
>> remove LDP between PE1, P and PE2 router, and your MPLS L3VPN will work.
>>
>> By the way, you don't need "mpls ip" on the TE tunnel interfaces if their
>> headends and tailends are on PE routers (not on P routers).
>>
>> If you have a specific scenario, please present.
>>
>> Roman Rodichev
>> 5xCCIE #7927 (R&S, Security, Voice, Storage, Service Provider)
>> Instructor, Content Developer
>> ieMentor Corporation http://www.iementor.com
>> Y!M: roman7927
>>
>> -----Original Message-----
>> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
>> mreiks
>> Sent: Tuesday, November 25, 2008 2:37 PM
>> To: Cisco certification; Cisco certification
>> Subject: MPLS TE + RSVP+LDP
>>
>> Hi
>>
>> I am finding it diffucult to understand whether RSVP TE can be run instead
>> of LDP/TDP. I am able to establish the tunnel with TE but when I disable
>> LDP
>> on the interfaces, my VPN sites cannot ping each other, until such time I
>> enable LDP. Is this normal? With MPLS VPNs do we always have to run either
>> LDP/TDP and have RSVP also if we want TE?
>>
>> Tx.
>>
>>
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