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Cell Relay Retreat>List Archive>month:2000-Jul> msg00055



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Re: Cell sequence

  • From: "Dominic Richens" <dominicr@nospamnortelnetworks.com>
  • Date: Wed, 26 Jul 2000 11:47:21 -0400
  • Organization: Nortel Networks



Paul Koning <pkoning@lucent.com> wrote in message
397EEEDB.89DF5133@lucent.com">news:397EEEDB.89DF5133@lucent.com...
> Baris Aksoy wrote:
> > Based on today's switch architectures, this shouldn't happen. Have you
ever
> > experienced something like that on the field?
>
> It shouldn't happen no matter what the switch architecture.  In other
> words, it's a hard requirement that the switch does not do this.

To refine the "broken switch" condition, an example would be protection
restoration (after the problem is fixed) on a SONET ring between two ATM
switch.  This can cause "cell-swapping", since the first cell in the stream
takes a longer route (higher propagation delay) around the ring than the
second cell, which takes the shorter restored path.