From: Roman Rodichev (roman@iementor.com)
Date: Wed Nov 26 2008 - 01:15:49 ARST
Great!
Yes, TE tunnels (LSP tunnel) is a unidirectional concept.
Roman Rodichev
5xCCIE #7927 (R&S, Security, Voice, Storage, Service Provider)
Instructor, Content Developer
ieMentor Corporation http://www.iementor.com
Y!M: roman7927
From: mreiks [mailto:marakalas.molefe@gmail.com]
Sent: Tuesday, November 25, 2008 9:13 PM
To: Roman Rodichev
Cc: Cisco certification; Cisco certification
Subject: Re: MPLS TE + RSVP+LDP
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.
Blogs and organic groups at http://www.ccie.net
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