Conference netcad::hub_mgnt

1911.0. "Two FDDIs on DECswitch 900EF in Hubwitch" by PTOJJD::DANZAK (Pittsburgher �) Thu Jan 19 1995 13:26

    You can double the FDDI ports on the DECswitch 900EF (and I think PE)
    by doing the following:
    
     - Go to LAN interconnect
     - CREATE an FDDI lan
     - Insert the module in the switch
     - Double click on it
     - Go to the port configure (innie/outie)
     - Change the FDDI port to go to the backplane and OK
     - Drag the new FDDI port down the the FDDI lan that you created on the
       LAN interconnect
     - Go to the port configure again
     - Configure port 3 for backplane access
     - ZAP...on OpenVMS hubwatch dies (see attached)
     - On Windows, you get ANOTHER fddi port on the switch.
    
    Pretty nifty - hardware modification without factory recall!
    
    You need to power off/out the  module to get rid of it...uugh!
    
    Regards,
    j
    
    VMS stack dump attached
    
    SYSTEM-F-ACCVIO, access violation, reason mask=00, virtual
    address=00000039, PC
    =001F8DB4, PSL=03C00000
    
      Improperly handled condition, image exit forced.
    
            Signal arguments              Stack contents
    
            Number = 00000005                7FE68BC8
            Name   = 0000000C                001F1FB9
                     00000000                00000076
                     00000039                00000000
                     001F8DB4                20000000
                     03C00000                7FE68BE4
                                             7FE68BC8
                                             001F2133
                                             00000002
                                             0007E3F5
    
            Register dump
    
            R0 = 00000002  R1 = 00000000  R2 = 00000076  R3 = 00038890
            R4 = 00038890  R5 = 00079D28  R6 = 0009335C  R7 = 00000001
            R8 = 7FE6909C  R9 = 0000000F  R10= 003796E8  R11= 7FE693D4
            AP = 7FE68B10  FP = 7FE68AD0  SP = 7FE68B4C  PC = 001F8DB4
            PSL= 03C00000
            

    > Two FDDIs on DECswitch 900EF in Hubwitch
    
    
    	Of course you can do that with Hubwitch, it will let you conjure up
    all kinds of weird connections :^)
    
    Scott