Ok, I think I understand what is happening, but I'd like to know
  a) if I am understanding correctly
  b) what to do about the situation . . .

We are reconfiguring our network.  Rather than use the class-C addresses as
we have in the past, we are glueing four of them together to make one large
"supernet" (well, what else is the opposite of subnet?).  All well and good in
most cases, except our 3000 :-(.  I put in the NI address, which is on the last
of the four class-C's.  Then I put in the "Neighbor Gateway", which is in the
first of the four.  I put the subnet mask in as 255.255.252.0 and tried to
validate.  No go.  It says, "Gateway IP Network doesn't match NI IP network or
check S&F".  In reading the online docs, I came across statements which led me
to the following understanding:

  The network implementation on the 3000 recognizes the ranges of IP addresses
and specifies a maxium size for a class-C "subnet" as 255.255.255.0.  That is,
if you want a subnet larger than a 256 addresses, you need to get a class-B
and subnet it.  Thus, my 255.255.252.0 makes no difference, at least for this
particular check.  Is that so?

  Is it true that it also makes no difference for the implementation
itself--that is, if I get an address on the first of the class-C's, so that
the gateway and the 3000 are on the same class-C and the check doesn't stop
validation, will the 3000 try to hand everything off to the gateway which goes
to one of the other 3 class-C's?
  Is my best plan to go ahead and do that anyway and simply tolerate the extra
load on the gateway and network?

TIA,
Ted
--
Ted Ashton ([log in to unmask]) | From the Tom Swifty collection:
Southern Adventist University    | "Your monster wears sandals.  Your monster
Deep thought to be found at      | wears sandles," said Tom in a thing-thong
http://www.southern.edu/~ashted  | voice.

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