Path: utzoo!utgpu!watserv1!watmath!att!rutgers!apple!altos!altos86!larree From: larree@altos86.Altos.COM (Larry Snyder) Newsgroups: comp.dcom.lans Subject: Re: SCO TCP/IP <-> Novell Netware/386 Message-ID: <4267@altos86.Altos.COM> Date: 17 Oct 90 20:08:29 GMT References: <1990Oct13.152838.19495@shl.uucp> Reply-To: larree@altos.com (Larry Snyder) Organization: Altos Computer Systems, San Jose, CA Lines: 61 In article you write: >> We'd like to link the TCP/IP and Novell networks so >> users on the SCO ODT machines can access ... >> >> 1. Is it okay to put the TCP/IP and Novell networks on the same >> Ethernet cable? I know Ethernet packets is Ethernet packets, but will >> Novell and/or ODT just ignore packets it doesn't understand? netware can be configured to run either using 'length' or 'type' fields (these correspond to 802.3 or ethernet-II specs, respectively). in either case, the two packet types can happily co-exist. assuming that you can get both the IPX/SPX and the TCP/IP protocol stacks to run in the same unix kernel, inbound packets will be sorted to the appropriate stack depending upon how they were bound to the ethernet driver. if no driver is bound appropriately for a particular packet, it will drop it. examples: assume that the netware PCs are configured for 802.3 packets (ethernet packet bytes 13-14 are the length of the frame), whenever a packet is received from the ethernet with a 'length/type' field between 0x60 and 0x5ee (min and max frame lengths) it would go to the netware stack. for other frames, the length/type field value would be looked-up in a table of bound types, and sent up the TCP stack as appropriate. if, however, your novell PCs were using 'type' fields, then all netware packets received by Unix would have a type value of 0x8137 (?) and would be passed to the proper stack (since the IPX/SPX stack would have registered itself as the proper destination for frames of this type.) >> 3. Again, if it's okay to do (1), are there versions of IPX and NETx >> for SCO Unix? WARNING ***** ADVERT COMING ... in order to accomplish (cleanly) your objective, novell has come up with a source-level product which they call 'portable netware' which can be ported to other enviromnents. of the current contractees for this product Altos is the only company which has a port to an SCO-based unix. to date, this product is only offered on altos hardware. we have a (very slick) family of '486 EISA systems, running a Unix based on SCO 5.3.2 with ODT. I say "based" since we started with source to SCO Unix and then put a great deal of effort into system tuning, enhancement, and bug fixes. (i would be happy to go into detail at another time if you wish) with the altos system in your network, it could act as a netware server, while running ODT (TCP, NFS, etc.), SCO applications and give everyone access to the printers, disks, ... hanging off the unix system. by configuring NFS, you could also give your PCs access to the filesystems of your current SCO systems. -- Larry Snyder Altos Computer Systems 2641 Orchard Parkway Internet: larree@altos.com San Jose CA 95134 UUCP : uunet!altos!larree 408.432.6200