Path: utzoo!attcan!uunet!lll-winken!lll-tis!helios.ee.lbl.gov!pasteur!ucbvax!SSCvax.McMaster.CA!BEAME
From: BEAME@SSCvax.McMaster.CA
Newsgroups: comp.protocols.tcp-ip
Subject: Subnet to Subnet routing
Message-ID: <8806142027.AA12732@ucbvax.Berkeley.EDU>
Date: 13 Jun 88 19:33:00 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 32


After reading the documents regarding subnets, I still have one outstanding
question with the specifics of BSD/SUN routing from one subnet to another.

Is it possible to use the following numbering scheme and provide complete
inter-communication:

+-------+---------------- Class B Network -----------+--------+
        |                                            |
     +--+--+                                      +--+--+
     | SUN1|                                      | SUN2|
     +--+--+                                      +--+--+
        |                                            |
        |  +-----+                         +-----+   |
        +--+ SUN3|                         | SUN4+---+ (Class C Network)
        |  +-----+                         +-----+   |
        |                                            |
        . (Class C Network)                          .
        .                                            .
        .                                            .

Where SUN1 and SUN2 are on the same Class B network (0 subnet bits)
and SUN3 and SUN4 use the same Class C number, but with 4 bits used for
subnetting.

Will SUN1 route packets, from SUN3 destined to SUN4, to SUN2 when the
destination is the same Class C number except that the subnet bits are
different ?

- Carl Beame

  Beame@McMaster.CA
  Beame@McMaster.BitNet