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Cell Relay Retreat>MPLS WG Archive>month:2002-Jul> msg00123



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FRR question

  • From: Ping Pan <pingpan@juniper.net>
  • Date: Thu, 04 Jul 2002 21:55:50 -0700
  • CC: mpls@UU.NET
  • User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:0.9.4.1) Gecko/20020508 Netscape6/6.2.3

During fast-reroute, when a PLR gets a PathTear from upstream, it 
propagates the tear-down messages downstream, and kills off the entire 
session.

If a LSR does not support fast reroute, and something bad has 
happened.... tough luck! :-)

- Ping

Doug Degan wrote:

> suppose a router along the path of a protected LSP gets PATH_TEAR
> 
> should it propagate it and remove this LSP?
> 
> does he know if it came from Ingress due to user configuration ?
> 
>  
> 
> I remind you it might be that the previous router doesn't support FRR 
> and sends the TEAR due to incoming interface failure.
> 
>  
> 
>  
> 
> thanks doug.
>

  • References: