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From: vaillan@ireq.hydro.qc.ca (Clement Vaillancourt)
Newsgroups: comp.dcom.lans
Subject: Re: Routing problem?
Message-ID: <4845@s3.ireq.hydro.qc.ca>
Date: 16 Jan 91 19:10:04 GMT
References: <4809@s3.ireq.hydro.qc.ca>
Sender: root@s3.ireq.hydro.qc.ca
Organization: Hydro-Quebec
Lines: 80

In article <4809@s3.ireq.hydro.qc.ca> vaillan@ireq.hydro.qc.ca () writes:
>Routing problem:
>
>I have a 3Com CS200 terminal server on a subnet on the other side of
>an Auspex. This terminal server has one of it's port assigned an ip number
>for a real-time machine attached to it.
> 
>If I am on the Auspex, I can telnet to 131.195.4.110 and it works, the
>job is being done by the CS200. But if I am on any other machines on my
>main backbone, I can't reach 131.195.4.110 with a telnet.
>
>     Main backbone 131.195.8   subnetted class B
>     --------------------------X----------------------------------X-----------
>                               |                                  |131.195.8.14
>                               |131.195.8.1                    --------
>                        ------------                           | Cisco|
>                        |  Auspex  | NFS server                --------
>                        ------------                              |
>                               |131.195.4.1                       -->Internet
>                               |
>                               |  small subnet 131.195.4
>                     ----------X-------X---------------------
>                                       |
>                                       |
>                                       | 131.195.4.10
>                                    --------
>                                    |CS200 | Terminal Server
>                                    --------
>                                       |
>                                       | <--- RS-232 line
>                                       |
>                                 -------------------
>                                 |Real-Time Machine| Assigned 131.195.4.110
>                                 -------------------  on the terminal server.



With the help of Jeremy A. Siegel (jzs@ktaadn.ESD.3Com.COM) at 3Com and
Linda Bridwell at Auspex (cat@auspex.com) the problem was found.

Once you set up the default gateway address in the CS200 to point to
the 131.195.4.1 of the Auspex, you have to issue a ZeroArp command to the
CS200 to clear the old routes in the memory of the CS200.

Thank you very much for the great help!

Clement.




























--
   Clement Vaillancourt,             |   Institut de Recherche d'Hydro-Quebec
   Responsable du Reseau             |        1800 Montee Ste-Julie, Varennes
   Network Manager                   |             P. Quebec, Canada, J3X 1S1
   vaillan@ireq.hydro.qc.ca          |  Tel: 514-652-8238 / Fax: 514-652-8309