The MPLS-OPS Archive

["Ashwin C. Prabhu" <Ashwinp@in.huawei.com>]

Title: RE: LDP & MPLS

Hello

 You are right. LDP protocol runs over TCP. This we call it as control 
 portion. This is used for establishment of the LSP's.
 But when datapacket comes, it is label switched in layer 2. SO the data  
 forwarding is done in layer 2  so it is a layer 2 protocol.

Ashwin

-----Original Message-----
From: Mohammed [mailto:ipswitching@yahoo.com]
Sent: Wednesday, November 28, 2001 5:34 AM
To: mpls-ops@mplsrc.com
Subject: LDP & MPLS

Hi all,

 I was confused about the layer on which LDP operates.
As we all know MPLS operates between layer 2 and layer
3.

 I am asking this because when a LDP session is
established msgs are sent on TCP for reliable
delivery.
So for LDP to run over TCP it has to be implemented
above that layer , but i am not sure where.

 Any pointers that help me in the implementation of
LDP are welcome.

 Thanks for ur help!.
 
 Sincerely,
 Abrar.

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