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Conference 7.286::fddi

Title:FDDI - The Next Generation
Moderator:NETCAD::STEFANI
Created:Thu Apr 27 1989
Last Modified:Thu Jun 05 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:2259
Total number of notes:8590

1336.0. "defqa & pathworks BUG?????" by MLNCSC::FACCHETTI () Thu May 12 1994 10:36

    Hi, We have a SERVER pathworks base on :
    
    	vax4500 with DEFQA and vms 5.5-2 h4
    
    this is use for booting and serving 100 PC connected in ethernet and
    via a fddi bridge to this server.
    We have several random problem during the boot,using a FDDI and
    ethernet analyzers,we traced the booting proccess.
    We see the vax some time answer with a HARDWARE ADDRESS (08-00-2b....)
    and not the phisycal address(AA-00-04....).
     Any idea why this is happening?????????
    
    
    
    					thanks 
    					Gianni & Stefano
T.RTitleUserPersonal
Name		DateLines
1336.1KONING::KONINGPaul Koning, B-16504Thu May 12 1994 12:257
That's a feature, not a bug.

With FDDI, only DECnet uses the AA-00... address; other protocols continue
to use the hardware address.  This eliminates problems caused by starting
things in the wrong order (as well as other, FDDI-specific, issues).

	paul
1336.2startup sequence is ok.MLNCSC::FACCHETTIFri May 13 1994 02:527
    Hi,Paul
    	the problem is random,sometimes the fddi board respond with
    AA-00-04.... and sometimes with 08-00-2b.... ,we install a fddi
    analyzer and see that.
    
    					Gianni
1336.3KONING::KONINGPaul Koning, B-16504Fri May 13 1994 15:394
You mean that you sometimes see MOP messages with AA-00... source address?
That's not the way it is supposed to work.

	paul
1336.4answere from the server aa-00-04 is correct...MLNCSC::FACCHETTIMon May 16 1994 10:247
    hi,PAUL
    
    the answer to a MOP from del servers is sometime AA-00-04 ... and the
    client (pc) works fine,and sometime the answere from the server is
    08-00-2b... and the pc hangs
    
    				Gianni
1336.5KONING::KONINGPaul Koning, B-16504Mon May 16 1994 12:447
Perhaps the PCs are set up to assume the AA... address.

What I meant is: MOP isn't supposed to be using the AA... address on FDDI.
So if some client expects that, it should be changed so it doesn't, and the
server likewise.

	paul