Title: VCID Notification over ATM link for LDP
Author(s): K. Nagami, Y. Katsube, N. Demizu, H. Esaki, P. Doolan.
Status: PROPOSED STANDARD
Date: Jan 2001
Length: 39134
The Asynchronous Transfer Mode Label Switching Router (ATM-LSR) is one of the major applications of label switching. Because the ATM layer labels (VPI and VCI) associated with a VC rewritten with new value at every ATM switch nodes, it is not possible to use them to identify a VC in label mapping messages. The concept of Virtual Connection Identifier (VCID) is introduced to solve this problem. VCID has the same value at both ends of a VC. This document specifies the procedures for the communication of VCID values between neighboring ATM-LSRs that must occur in order to ensure this property.
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