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From: qureshi@WSU-ENG.ENG.WAYNE.EDU (Imran U. Qureshi 7-0108)
Newsgroups: comp.protocols.tcp-ip
Subject: (none)
Message-ID: <9103111554.AA09237@hub.eng.wayne.edu>
Date: 11 Mar 91 15:51:58 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
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I have the following setup on a ethernet:

HP9000 with 3 X-terminals booting from it.
3 VAX stations running TCP/IP and DECNET.
Cisco router with only TCP/IP turned ON.

The problems are:
1.The arp cache of both HP9000 & Cisco show the MAC address of X-Terminals 
corresponding to a VAX station.

2. I cleared the Cisco arp and tried to ping the X-terminal, the entry in the arp cache related to the X-terminal comes back with same VAX MAC address. This thing happens even if the X-Terminals are not on the network.

3. Surprisingly this process works with X-terminals booting from HP9000. The overhead is packets  going first to the router and then to HP9000. However after some hours Cisco fails to route the packets and the X-terminals lockup.

Question:

 Can the Cisco get MAC level addresses from HP9000 or from any other host when X-terminals are not on the network?

Thanks in advance	

qureshi@trace.eng.wayne.edu