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- Newsgroups: comp.sys.sun.admin
- Path: sparky!uunet!mcsun!Germany.EU.net!isaak.isa.de!newton.isa.de!news.isa.de!luik
- From: luik@isa.de (Andreas Luik)
- Subject: SUMMARY: using SPARCstation IPC as gateway?
- In-Reply-To: luik@isa.de's message of Fri, 4 Sep 1992 23:02:49 GMT
- Message-ID: <1992Sep8.120547.1002@isa.de>
- Sender: usenet@isa.de
- Nntp-Posting-Host: kepler
- Organization: ISA GmbH, Stuttgart, FRG
- References: <1992Sep4.220256.2250@isa.de>
- Date: Tue, 8 Sep 1992 13:05:41 GMT
- Lines: 48
-
- In article <1992Sep4.220256.2250@isa.de> I posted the following question:
- As the traffic on our ethernet is getting more, I decided to split our
- net. I have the following possibilities:
-
- 1. Use a bridge (costs app. DM 5000,--)
- 2. Add a second ethernet card to a SPARCstation IPC and use it as a
- gateway (costs app. DM 800,--)
-
- The traffic between the two nets will be NNTP (newsreaders), XNTP,
- X-protocol and some NFS traffic (no diskless clients).
-
- Using a SPARC as a gateway would be much cheaper, but:
-
- - will the throughput suffer? Is a bridge much faster than a gateway?
- How much?
-
- - will the performance of the SPARCstation IPC suffer? It should be usable
- by at least 2 or three users (app. 10 windows) and has to exports some
- NFS directories, too. Currently this works well.
-
- I received three answers from:
-
- Gary L Dare <gld@cunixb.cc.columbia.edu>
- pomeranz@nas.nasa.gov (Hal R. Pomeranz)
- blplante@cvgis.prime.com (Brian L. Plante)
-
- Thanks alot to all.
-
- Using an IPC as a gateway is possible, but the following should be
- considered:
-
- o The SPARC should have enough memory because swapping will degrade
- net performance significantly
-
- o To ensure that the routed gets enough CPU, no real work should be
- done on the machine. NFS service will be OK, but makes or so will make
- routing slow (and renicing routed seems not to help).
-
- o Hal R. Pomeranz wrote that I/O bandwidth for Sun ethernet ports is
- pretty pitiful (benchmark shows only 2 Mbits/sec bandwidth, most
- bridges have full LAN speed)
-
- I'm not sure yet, but I think I'll wait until the budget allows us to
- buy a bridge.
-
- --
- Andreas Luik E-Mail: luik@isa.de
- (postmaster@isa.de) UUCP: ...!{uunet!unido,pyramid}!isaak!luik
-