Path: utzoo!attcan!uunet!husc6!uwvax!oddjob!ncar!ames!ucsd!nosc!helios.ee.lbl.gov!pasteur!agate!violet.berkeley.edu!gts
From: gts@violet.berkeley.edu (Greg Small)
Newsgroups: comp.protocols.tcp-ip.ibmpc
Subject: Re: multiplexing interfaces (was 'ethernet over pcnet')
Message-ID: <11576@agate.BERKELEY.EDU>
Date: 2 Jul 88 02:39:53 GMT
Sender: usenet@agate.BERKELEY.EDU
Reply-To: gts@violet.berkeley.edu (Greg Small)
Organization: University of California, Berkeley
Lines: 25

= From: KGJHH@ASUACAD.BITNET (Jim Howard)
= Newsgroups: comp.protocols.tcp-ip.ibmpc
= How much additional memory do these multiplexing drivers use? In many LAN's
= memory can be pretty tight unless you add expanded or extended memory and
= move some drivers or TSR's there (at a fair amount or additional cost).

We have been using Ungermann-Bass's TCP-PC product since 1986.  It provides
Netbios on tcpip plus Netbios extensions for direct TCP, UDP, IP and raw
Ethernet multiplexing/demultiplexing.  We run IBM PC Network, Netbios
applications, TN3270 and ftp simultaneously.  Others on campus also run
tcpip applications developed on the UB socket library, for example PB
(phone book) which looks up staff phone numbers and mail addresses.  We
have about 600 PCs on the network now with about 1200 to go in this round.

We chose their intelligent PCNIU rather than the dumb PCNIC in part because
all of the tcpip code is loaded into the board and does not take up any of
the 640k space.  This has proved quite valuable.  Actually, the PC resident
Netbios interface does take about 9k within the 640k space.

Gregory T Small                                      (415)642-5979
Personal Computer Networking & Communications        gts@violet.Berkeley.EDU
Workstation Support Services - Software Group        ucbvax!jade!gts
267 Evans Hall                                       SPGGTS@UCBCMSA.BITNET
University of California, Berkeley, Ca 94720
(Workstation Consulting 2-8899, 262 Evans, 10-12 and 2-4pm, mondays)