Conference 7.286::fddi

1185.0. "DB620 SPT problem" by GIDDAY::KULHALLI () Mon Dec 13 1993 22:46

    
    
    The following problem was observed at one of our customer site.
     
    We had a DECSERVER 200 being UNABLE to DOWN line load with the
    following Configuration:
    Port status (F= Forward and B=Backup ) and
    we expected MOP request to take the path :
    DS200 -> Port3 of DB620_2 -> Port2 of DB620_2 -> Port2 of
    DB620_1 -> port1(FDDI) of DB620_1 -> VAX 9000 (Load host).
    and from ther down line load the DS200.
    All port costs were set to default value 10.
    
  ___________________________________________________________________________
    |                                                                    |
    |       _________                                  __________        |
 |  |       |       |           VAX 9000               |         |       |
 |  _______4|F      |                |                 |        B|4_______
 |          |DB620_1|                |                 | DB620_2 |
 |_________3|F     F|==================================|B       F|3________
 |          |       |1             FDDI               1|         |        |
 |  _______2|F      |                                  |        F|2____   |
    |       ----------                                  ---------     |   |
    |        (V 1.2)                                    ( V1.2 )      |   |
    |                                                                 |   |
    |                                                                 |   |
    -------------------------------------------------------------------   |                                                 
                                                                          |
                                                                  ---------
                                                                  |       |
                                                 ------- |        |DELNI  |
                                                 |       |        |-------|
                                                 |       |              |
                                                 |DS200  |--------------
                                                 |       |
                                                 |       |
                                                 --------
    
     
    By changing Port cost to 30 on Port2 of DB620_2 we had that port go
    into backup and Fibre port on the same bridge go to Forward state
    and the DS200 Down line loaded OK from VAX9000 -> Port1 of DB620_2 ->
    Port2 of DB620_2 -> DS200.
    
    Can some one explain why the initial setup did not work?
    
    Is it possible that DB620 does not bridge from Port 2 to Port3  -
    i.e No Ethernet to Ethrtnet but only FDDI to Ethernet.
    
    Customer wants an explaination for all this
    
    Thanks for any feedback.
    
    Mohan Kulhalli
    CSC Sydney
                                       

    There was a bug in the firmware that caused this non-forwarding
    problem.  It is fixed in V1.3d and can be copied from -
        
	npss::public$dsk:[interchange]6xx_v13d.sys
                                       
    Bill