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Conference netcad::hub_mgnt

Title:DEChub/HUBwatch/PROBEwatch CONFERENCE
Notice:Firmware -2, Doc -3, Power -4, HW kits -5, firm load -6&7
Moderator:NETCAD::COLELLADT
Created:Wed Nov 13 1991
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:4455
Total number of notes:16761

2434.0. "Jabbers with invalid addresses" by GIDDAY::MORETTI (Networks Integration, Oz) Wed Jun 28 1995 04:44

    
    Has anybody seen jabber packets on a network which cannot be allocated
    to an ethernet address.
    
    I took a datacapture of these jabbers using ProbeWatch but the source
    address was either :
    
    		6a0000xxxxxx  or 1a0000xxxxxx
    
    These addresses are not present in the LAN registry so I am assuming
    they don't exist.
    
    I am getting over 300 jabbers per minute when we load the network down
    with large, multiple copies.
    
    I posted the config in 2418 but got no reply and I have tried changing
    all the hardware (except the PC NIC cards) including the DE435 card for
    the file server but am still getting jabbers.
    
    Thanks
    
    John Moretti
T.RTitleUserPersonal
Name		DateLines
2434.1problem locatedGIDDAY::MORETTINetworks Integration, OzSun Jul 02 1995 20:1410
    
    I posted the problem  fix in note 2418.1 but forgot to say that if the
    file server and PCs were on the same 90T+ there were no errors of any
    kind.
    
    It seems one of the differences of the 90T+ and 90T repeaters is the
    jam collision bits which might explain the strange addresses.
    
    
    John