[comp.sys.novell] Routing interaction with Cisco

tom@rsp.UUCP (Thomas Ruf) (01/10/91)

com217v@vaxc.cc.monash.edu.au writes:

>1. Apparently the cisco routing algorthmn is unable to detect that the
>   traffic will travel in and out the same port. But lets be fair, all
>   it did was offer it services and exhibit a knowledge of the net.

The routers behaviour doesn't comply with Novells router spec. The cisco
box SHOULD detect that traffic wil travel in and out the same port, and
therefore should not reply.
( In Novell speak, this part of the routing strategy is called "Best
Information Algorithm", otherwise known as split horizon).

>2. The NET3 shell seems to think the first/fastest route will be the
>   "best" choice anyway and ignores any later answers. This is not always
>   the "best" choice.

Not only NET3, ALL IPX applications assume that *only* the "best" router(s)
will answer a "Get Route request".

Thomas
-- 
Thomas Ruf	tom@rsp.de	Schneider & Koch GmbH	Schneider & Koch, Inc
{uunet,mcvax}!unido!rsp!tom	Germany			Palo Alto