Path: utzoo!attcan!uunet!samsung!aplcen!haven!decuac!shlump.nac.dec.com!riscy.dec.com!croton.enet.dec.com!frank
From: frank@croton.enet.dec.com (Frank Wortner)
Newsgroups: comp.sys.dec
Subject: Re: Lan-Bridge vs. 2 Ethernet-Controllers
Message-ID: <1520@riscy.dec.com>
Date: 17 Nov 89 14:56:22 GMT
References: <787@unipas.fmi.uni-passau.de>
Sender: news@riscy.dec.com
Lines: 35

In article <787@unipas.fmi.uni-passau.de>, gengenba@unipas.fmi.uni-passau.de (Michael Gengenbach) writes:
 
= Hello,
= 
= we have a problem in deciding about the best ethernet configuration for
= our DECsystem 5810.
= 
= When asking our DEC people about the problem we didn't find anybody with
= experience in hardware and ULTRIX TCP/IP. They did only know about VMS and
= DECNET. Our questions are:
= 
=    - When using 1 ethernet-controller for each segment, do they
=      filter the traffic between the segments. Is the CPU needed
=      to do it, or can it be done in the ethernet-cards locally?
= 
=    - When using a LAN-bridge can we efficiently serve machines over
=      the bridge? And in this case: Is one DEBNI-ethernet-controller
=      with a speed of 5 MBit/second enough to serve our local machines
=      and the University ones?
= 
= I hope that somebody can give us some advice on our configuration.
= 
= Thank you.
= 
=    Michael

Mann can nicht antworten ...      (I hope I spelled that right  :-)

It is not possible to determine what the efficiency will be from the information
you posted.  What do you mean when you use the word "serve?"  What types of
services?  How many machines are involved?  What types of machines are they?  Do
you have any plans for future expansion?  Do you have any budgetary or technical
constraints?  Any answer to your questions would require more information.

						Frank