From: mreiks (marakalas.molefe@gmail.com)
Date: Wed Nov 26 2008 - 01:12:59 ARST
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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