Path: utzoo!mnetor!uunet!seismo!sundc!pitstop!sun!decwrl!ucbvax!BU-IT.BU.EDU!gjc
From: gjc@BU-IT.BU.EDU (George J. Carrette)
Newsgroups: comp.os.vms
Subject: TCP/IP terminal servers on VAX/VMS
Message-ID: <8802102314.AA03147@bu-it.BU.EDU>
Date: 10 Feb 88 23:14:36 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 18

The most efficient from a host-load point of view is probably
the EXCELAN implementation. The EXOS 201 board has a processor
on which is implemented ICMP, IP, TCP, and UDP, and even TELNET.
For the special case of TELNET they supply a vms terminal-driver
that makes an incoming telnet connection look like a regular terminal.

Other implementations either require a seperate TELNET process
for each connection, forcing data through pty type device,
*or* they hack kernel-level telnet implementations for efficiency.
At least the excelan implementation works through normally supported
user-written VMS driver techniques.

What EXCELAN is doing about the BI-BUS stuff is a good question,
best to give them a call.

I have used both the wollongong TCP and the EXCELAN one.

-gjc