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Cell Relay Retreat>List Archive>month:1995-May> msg00184



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Resilient ATM

  • From: Masataka Ohta <mohta@necom830.cc.titech.ac.jp>
  • Date: Wed, 31 May 95 15:16:16 JST
  • CC: MLG2@trpo6.Tredydev.Unisys.com, ip-atm@matmos.hpl.hp.com

> In order to meet your stated goal, I would suggest two complementary
> approaches:
> 
> 1. Aim for good layer 2 redundancy/failover (e.g. use PNNI signalling)
>      and use a simple upper layer protocol (e.g. RFC 1577)

It can't be redundant against the ARP server failure, the
single-and-only link failure to the ARP server or the single switch
failure to which the ARP server is directly attached.

> 2. Assume VCCs can come and go with poor failover mechanisms (e.g. UNI 3.x) 
>      and define a more robust upper layer protocol (e.g. LAN Emulation)

> If you go route 2 then you've got a lot more 
> work to do on RFC 1577+ and distributed server problems.

As LANE will be there, why do you think we need work to have RFC826-?

							Masataka Ohta