Subject: VC Merge support in LDP

From: "Santosh Gupta" <[email-masked]>
Date: Sun, 23 Apr 2000 09:34:08 +0530

Hello 
    I am implementing LDP-06 and I have question regarding vc merge. 
When LDP merges 2 LSPs into 1, it should take care that the bandwidth on the outgoing channel from that point onwards till the egress LER should be such that it is sufficient for the data merged from 2 LSPs. Suppose 1 LSP is already setup and later a request comes for the same destination and an LSR decides to merge this new request with the already existing LSP. But there is no such provision in the LDP draft to modify the LSP. So how is this merging supported ? 

In CR-LDP 03 draft, the LSP can be modified but that has to be triggered from the Ingress LER and not by any LSR in between the LSP. So how could we possibly go about doing it, even in CR-LDP ? 

santosh