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- From: bourkej@ul.ie
- Newsgroups: comp.protocols.tcp-ip
- Subject: Tricky subnet question for gurus
- Message-ID: <19955.2b0a8743@ul.ie>
- Date: 18 Nov 92 18:11:15 GMT
- Organization: University of Limerick, Ireland
- Lines: 48
-
- Hi,
-
- can someone tell me if the following is cool.
-
- I have a bunch of units with hard coded ip addresses ( yuck ).
- I have four networks these must go on.
- I have workstations on these networks which need to talk to the units.
- The units must be interchangable.
-
-
- I want to be able to connect to the workstations from any net. I only need
- to talk to the units via the local workstations.
-
- The units and workstations must be able to interact wothout anything
- routing betweeen them. I'll have a router connecting to each net to
- allow access to the workstations.
-
- Is the following valid.
-
-
- net 1 x.x.4.0 mask 255.255.248.0
- net 2 x.x.5.0 mask 255.255.240.0
- net 3 x.x.6.0 mask 255.255.248.0
- net 4 x.x.7.0 mask 255.255.248.0
-
- units x.x.1.0 mask 255.255.248.0
-
-
- last three bits of octet 8 are zero.
-
- Using the subnet system, each net can talk to their local units. Each net
- thinks it can talk to each other ( will never happen ). Each net will think
- it can talk to units on other nets ( never happen )
-
- If I put routers on each net with subnet masks of 255.255.255.0, each router
- will advertise a router to each net, and only that net.
-
- Is it ok to have different subnet masks on the one net ?
-
- I'd appreciate any reply's by EMail,
-
- Thanks,
-
-
-
- john
-
-
-