Cell Relay Archive

Cell Relay Retreat>List Archive>month:2000-Jul> msg00007



[Date Prev][Date Next][Thread Prev][Thread Next]  
  [Date Index][Thread Index][Author Index][Subject Index]

Crankback in PNNI

  • From: Prasad Venkatesh <prasad.hebbar@ind.alcatel.com>
  • Date: Thu, 06 Jul 2000 09:26:12 -0500
  • Organization: Alcatel InterNetworking
  • X-Origination-Site: <ind.alcatel.com>

 
Hi

I have a doubt related to PNNI crankback handling.

A ---- B ___1_____C
       |____2_____|
       |          |
       |____D_____|

If node B receives a DTL  from A to reach C ( A-B-C) without port being specified in the DTL, node B will try both outgoing links 1 and 2.
But if both the links are not in a position to forward the call, then what will be the crankback info
sent back to A.  How do we specify to A that both the links are not able to handle the call so that A will consider A-B-D-C as the next path. This problem is arising because A does not specify port in the DTL.

How do we handle this case ?

Thanks in advance.

Regards
Prasad Hebbar