From: mcollins@db.novell.com (Marty Collins)
Newsgroups: comp.sys.novell
Subject: Re: Subnet masking with Novell TCPIP.NLM v1.01
Date: 5 Oct 92 16:55:01 GMT
Organization: Novell, Inc.
X-Newsreader: Tin 1.1 PL4

walter@ucunix.san.uc.edu (Joseph Walter) writes:
: Hello,
: 
:   I work for a small college who is just getting access to the Internet.
: We currently have a Novell 3.11 server serving 3 Ethernet segments.  The
: Internet address we were assigned is a class C address, which we need to
: divide to cover the 3 ethernet segments.
:   To do this, I initially set the subnet mask to FF.FF.FF.E0 which left
: the last five bits of the address as the host portion.  This way, I
: could have up to 6 networks with 32 nodes per network.  With that, I
: went ahead and tried to bind IP to the three boards appropriately...
: here's an excerpt from my Autoexec.ncf....
: 
: :LOAD NE3200 SLOT=3 NAME=IP-ADMIN FRAME=ETHERNET_II
: :LOAD NE3200 SLOT=5 NAME=IP-OPEN FRAME=ETHERNET_II
: :LOAD NE3200 SLOT=6 NAME=IP-486 FRAME=ETHERNET_II
: :LOAD TCPIP FORWARD=YES
: :BIND IP TO IP-ADMIN ADDR=192.153.33.33 MASK=FF.FF.FF.E0
: :BIND IP TO IP-OPEN ADDR=192.153.33.65 MASK=FF.FF.FF.E0
: :BIND IP TO IP-486 ADDR=192.153.33.97 MASK=FF.FF.FF.E0
: 
:   This all loads and binds correctly, and, I can access any of the three
: boards from their respective network segments, but TCPIP.NLM will NOT do
: any forwarding between the networks. 

I believe you have not correctly configured your end stations to see the
other networks.  This set up is fine and YES NOVELL CAN ROUTE BETWEEN
SUBNETS!!!!!  THis is not pointed to you but all the others who blame
NOVELL for incorrect problems in the past.

The ends stations should have some way to define a default IProuter.
This should be the ip address of the NIC in the server on the same
segment. Also did you correctly change the masks for the end stations?



: 
:   The interesting thing is, if I theoretically change the subnet mask
: and addresses to something like...
: 
: :LOAD TCPIP FORWARD=YES
: :BIND IP TO IP-ADMIN ADDR=192.153.33.1 MASK=FF.FF.FF.00
: :BIND IP TO IP-OPEN ADDR=192.153.34.1 MASK=FF.FF.FF.00
: :BIND IP TO IP-486 ADDR=192.153.35.1 MASK=FF.FF.FF.00
: 
:   then it works perfectly, and TCPIP.NLM will do the appropriate
: routing.  
: 
: My question (now that I got all that out of the way), is why doesn't
: TCPIP.NLM do the forwarding when the subnet mask is FF.FF.FF.E0?  Is
: there some sort of restriction (bug) with Novell's implementation of TCPIP
: that makes that illegal?  The Novell TCPIP documentation basically isn't
: worth the paper it's printed on, so I've been referencing another book,
: _Internetworking_With_TCP/IP_ by Douglas Comer.  According to that, I


This is a good book to look at for TCPIP configs and so forth.

: should be able to do the subnetting as I want to....
: 
:   I guess if Novell's TCPIP will not do the routing, then my only
: options are to a) get a class B address, or b) buy a dedicated router?

Novell will route when the configuration is correct.

: 
: Any help, comments, suggestions, or babblings are quite welcome...
: 
: -Joe
: walter@ucunix.san.uc.edu 
: 

--
		
	   A woman needs a man like a fish needs a bicycle.

	                				U2 
							Tryin to throw your
							arms around the world.

   Marty Collins
   Product Support
   NOVELL, INC.  San Jose, CA.        
   mcollins @novell.com 
   1-800-NETWARE