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Cell Relay Retreat>List Archive>month:1996-May> msg00182



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TTL decremening (was Re: My personal take on cell switching routers)

  • From: Masataka Ohta <mohta@necom830.hpcl.titech.ac.jp>
  • Date: Fri, 31 May 96 14:18:50 JST
  • Cc: malis@nexen.com, ion@nexen.com, gja@thumper.bellcore.com

> The only reason I could think of is that CSRs might be vulnerable
> to non-damped routing loops, while NHRP can detect them during the
> query/response phase.

Cell forwarding loops are created only when IP signaling packet
loops, in which case, data packets loop even with non-CSR routers.

The loops (both that of CSR and non-CSR) are resolved immediately
after the signalling loop is resolved and forwarding directions
are corrected.

That is, unlike NHRP, CSRs does not have an intrinsic loop problem.

							Masataka Ohta