Hi,
In the example that you
have given, LSR2 would modify the PDR(it may substitute it with a smaller
value) and send the Label request to LSR3.
In general an LSR that cannot satisfy a negotiable traffic parameter
request, replaces it with a smaller value and propagates the Label
request. Label Mapping carries the final negotiated value. The LSRs along the
path, then adjust the resources they reserved for the path, based on the
values conveyed in the Label Mapping message.
-Vasanthi
Ajay Malik wrote:
Hi,
I have a question regarding
negotiations in CR-LDP:
LER--LSR1--LSR2---LSR3--LER
if the LSR2 finds that sufficient resources are not
available and the parameter
values are
negotiable what does it exactly does ?
* does it modify the setup and sends it to LSR3
irrespective of anything ?
*
does it first negotiate with LSR1 ? how ? (take example of PDR in
Delay
sensitive
service)
Ajay