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- Path: sparky!uunet!alisa.com!dakota!denny
- Newsgroups: comp.protocols.appletalk
- Subject: Re: CLAIM: Seed Routers are not Nodes
- Message-ID: <1992Nov21.184318.20596@alisa.com>
- From: denny@alisa.com (Bob Denny)
- Date: Sat, 21 Nov 1992 18:43:18 GMT
- References: <chris.722141659@ph-meter.beckman.uiuc.edu> <SLIN.92Nov19112036@regal.cisco.com>
- Organization: Alisa Systems, Inc.
- Lines: 37
-
- In <SLIN.92Nov19112036@regal.cisco.com> slin@cisco.com (Steven Lin) writes:
-
- > In article <chris.722141659@ph-meter.beckman.uiuc.edu>
- chris@ph-meter.beckman.uiuc.edu (Chris Gressley) writes:
- >
- > The manufacturer of our routers has made a very strange claim
- > concerning their implementation of AppleTalk...
- > [...]
- > The folks who make our routers make the following two claims:
- >
- > 1. A "router" is not a "node". Nodes and routers are distinct sorts of
- > things.
- >
- > 2. Since a router is not a node, if a router is a seed router, it need
- > not dynamically acquire a node ID but can instead have one statically
- > assigned, since a seed router has statically assigned port descriptor
- > information.
- > [... excellent response here ...]
-
- I would like to add one thing. By making all of your routers seed routers,
- you are asking for trouble. Why not make _none_ of them seed routers? If
- they are all seed routers, you must set each one of them up manually so as
- to be SURE they have the correct data when they are brought on line. Well,
- if you have to do that, why even use seed routing?
-
- Our company has been in the AppleTalk world since 1985, and we went thru
- the design and implementation phases of Phase 2 (ugh!) with great pain. Our
- customer base took three years to make the change. Along the way, we
- learned that seed routing is a two-edged sword. If you can limit the number
- of seed routers to one or two, and make damn sure they are right, it's a
- Good Thing. The more seed routers you have, the more trouble you are asking
- for. Having routers seed other seed routers is akin to bringing too much
- uranium together too close.
- _______________________________________________________________________________
- Robert B. Denny voice: (818) 792-9474
- Alisa Systems, Inc. fax: (818) 792-4068
- Pasadena, CA (denny@alisa.com, ..uunet!alisa.com!denny)
-