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Cell Relay Retreat>ION Archive>month:1996-Jul> msg00042



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shortcut routing

  • From: "FUJIKAWA, Kenji/=?ISO-2022-JP?B?GyRCRiNAbjgtPCMbKEI=?= " <magician@kuis.kyoto-u.ac.jp>
  • Date: Tue, 09 Jul 1996 22:07:05 +0900
  • Cc: mohta@necom830.hpcl.titech.ac.jp, ion@nexen.com

Ohta> Then, how can you say NHRP useful?

Blake> For unicast layer 2 shortcut routing resolution, the use for which it is
Blake> intended.

I always wonder what a shortcut is.
It may be

 1. the fastest path for data transfer.
    It may be the physically sortest path in most cases.
 2. the path avoiding routers.
    If routers forawad data at IP level,
    the advantage of ATM will be lost.

But 1. is meaningful only when ATM switches are connected 
to physically nearer switches.
Most networks are, I think, constructed hierarchically.

With respect to 2.,
CSRs can also forwad data cell by cell.
---------------------------------------------------------
FUJIKAWA, Kenji @ Dept. of Info. Sci., Kyoto Univ., Japan
                  TEL +81 75-753-5387 FAX +81 75-751-0482
                       e-mail magician@kuis.kyoto-u.ac.jp