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Cell Relay Retreat>MPLS-OPS Archive>month:2004-Mar> msg00120



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RE: Question about L2VPN over MPLS

  • From: sthaug@nethelp.no
  • Date: Wed, 24 Mar 2004 13:13:19 +0100
  • Cc: mpls-ops@mplsrc.com
  • Resent-Date: Wed, 24 Mar 2004 07:41:00 -0500
  • To: elkou141061@hotmail.com

> Very nice/useful  summarization for the pro and con .
> Aprreciate if U could explain the following :
> 
> Quote
> 
> Can strongly influence failover times (particularly with traditional 
> 802.1d).
> 
> Unquote
> 
> What are the features added to the traditional 802.1d to speed the 
> convergence ?? .

802.1w, Rapid Spanning Tree (if you want to use spanning tree).
Convergence in a few seconds.

> My guess that the best way to speed the Spanning Tree is to disable it 
> completely as
> almost 90% of customers do not have or plan to install  back-door link 
> between customer sites .
> If back-door link do exist so connect with router .

If you can do without spanning tree, yes, that would probably be the best.

> >>From Implementation in U netw , do U enable ST as default ???

No.

Steinar Haug, Nethelp consulting, sthaug@nethelp.no

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