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- Newsgroups: comp.protocols.appletalk
- Path: sparky!uunet!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!darwin.sura.net!nntp.msstate.edu!willis1.cis.uab.edu!nuntius
- From: Kevin W. Ramer <ramer@nrc-iris.nrc.uab.edu>
- Subject: Re: CLAIM: Seed Routers are not Nodes
- Message-ID: <1992Nov19.152739.12201@cis.uab.edu>
- Sender: root@cis.uab.edu (Bruce Williams)
- Organization: Neurobiology Research Center
- X-Useragent: Nuntius v1.1
- References: <chris.722141659@ph-meter.beckman.uiuc.edu>
- Date: Thu, 19 Nov 1992 15:27:39 GMT
- Lines: 53
-
- In article <chris.722141659@ph-meter.beckman.uiuc.edu> Chris Gressley,
- chris@ph-meter.beckman.uiuc.edu writes:
- >
- >1. A "router" is not a "node". Nodes and routers are distinct sorts of
- >things.
- >
-
- >2. Since a router is not a node,
- Does it really matter ? Personally I'd call it a node since it 1) has
- its own
- address, 2) communicates between other nodes, etc, etc.
-
- A1) A seeding router sets the address for the NETWORK that it is on. It
- may in fact
- choose its node number in the server range (e.g. 128-254 LocalTalk)
-
- A2) Most macintosh machines keep their network address somewhere and will
- try
- to use it 1st before trying to acquire a new address. And I'm sure that
- routers
- LaserWriters, etc all use the same mechanism.
-
- >I am trying to configure the backbone network that the routers share
- >with the campus backbone so that all of the routers are seed routers.
- >Because of this, two of my routers are trying to use identical node
- >IDs, which all in all is a very bad thing.
-
- If you wish to do this you will need *unique* numbers for the separate
- networks that
- each router routes for.
-
- A diagram:
-
- +---------------+----------------+---------------+ (4) (trunk enet)
- [ ] [ ] [ ]
- [ ] (routers)
- | | |
- | (local talk branches)
- | | |
- |
- (2) (6) (9)
- (11) Network number
-
-
- All routers must agree on the network number for the common network
- (trunk)
- Also if two routers number their respective localtalk branches the same
- nodes in one will not see nodes in the other. With Phase II if the
- routers do not
- agree on the Phase II network number the networks are separate and will
- not know about each other.
-
- While I am not an AUTHORITY I am speaking from my experiences.
-