Conference netcad::hub_mgnt

1820.0. "900MX 4th port blank even with PMD in it" by PTOJJD::DANZAK (Pittsburgher �) Fri Dec 23 1994 08:52

    I have a customer who has a 900EF and 900MX in two ONEhubs.  Currently
    only port B of the EF is connected to port A of the MX, so the FDDI
    between the two is wrapped.  Off of port 2 of the MX we have an FDDI
    attached device.  All other ports of the MX are vacant.  The EF has
    only one port in use to the management station  - a PC running HUBwatch
    for Windows V3.1.  I assigned IP addresses to both the EF and MX and
    used HUBwatch to view them.  Note that the bottom port (B) on the MX
    has no PMD - the customer only needs a single connection, yet the MX is
    configured as the default (A&B) via the front ports.
    
    When viewing the MX, the 4th port CONSISTENTLY shows port 4 as blank.
    All green but blank - no PMD.  We attached the one FDDI station to it
    and it appears to work.
    
    WHY would HUBwatch show a blank PMD even though one was there?  Could
    it be that we have no PMD in the 6th port and an A/B config?  To test
    things out I changed PMDs between the 5th and 4th port. (Bad PMD?) but
    the result was the same.  Could the 4th port on the MX board be bad?
    
    Could there be a problem in Hubwatch ? (naaw...(grin))
    
    Any ideas?
    Thanks,
    j