[comp.dcom.lans] XID broadcast problems

eric@cssoff.syssup.tds.philips.nl (Eric van Rheenen) (07/13/90)

Hello tcpip experts,

This is my second posting of this question, but I didn't get any response.
This is probably caused by a problem we had discovered by the machine that
supplies us with the news.

I have a problem with a network containing SUN's, ICL's and Motorola
Delta series 8000 computers using the tcpip protocol.

We have discovered that the SUN machines are sending XID broadcasts
in this tcpip environment. This resulted in a havy netload from the 
motorola machine, because the response was wrong. We have fixed this
problem, it doesn't respond anymore to this braodcasts :-).

The customer now wants the Motorola machine to respond
to this XID broadcasts in a proper way (for him).

In our opinion, the XID protocol and associated frames are not part of
the tcp/ip protocol. They are part of the OSI LLC protocol. Also the
MAC layer doesn't have an OSI stack to handle the messages for
processing. Thus ignoring the broadcasts is the best solution.

Question:
- Does anybody know why SUN has implemented XID broadcasts in a tcpip
  environment.

Eric van Rheenen
Philips Informatie Systemen Nederland B.V.
Tel  : +31 (0)55 - 43 3372      |  UUCP:  uunet!hp4nl!philapd!cssnl!eric
Fax  : +31 (0)55 - 43 3487      |  NET :  eric@syssup.tds.philips.nl