Conference 7.286::fddi

1351.0. ""Seconds since last zeroed" clearing on DEMFA circuit." by NSTG::OUIMETTE (Don't just do something, sit there!) Tue May 31 1994 10:24

    (Cross-posted in DECnetvax and FDDI notesfiles)
    
        Hello all,
    
    I'm seeing the "Seconds since last zeroed" field of 2 nodes circuit
    counters being cleared every time "User buffer unavailable" increments.
    
    It's a mixed interconnect VAXcluster, VMS 5.5-2, DECnet PhaseIV,
    DEMFA's, FXDRIVER "X-22A1". Of the 3 boot nodes, 2 are routers (6610,
    6520). There is a very hogh rate of DECnet multicast traffic
    (~150/second), and UBU's are periodically logged in bursts of 20-50
    every 2-5 minutes on the boot nodes; suspicion is that Endnode hellos
    are responsible, as the non-routing node is not logging UBU's. Receive 
    buffers are set to 32 on MFA-0, there are no device errors on FXA0, and 
    memory pool is not expanding. The circuit counter timer is set to
    28800. All 3 bootnodes have DEMFA's at version 1.4
    
    Is this known/expected behaviour? Has anyone seen this before?
    
    				Thanks,
    
    Chuck Ouimette
    NSTG
    
    
    (Note the timestamps on the counters below, as an example)
    
    
    $ mc ncp sho known circ count
    
    
    Known Circuit Counters as of 31-MAY-1994 09:00:42
    
    Circuit = MFA-0
    
             488  Seconds since last zeroed
            1766  Terminating packets received
            2004  Originating packets sent
               0  Terminating congestion loss
            7879  Transit packets received
            7852  Transit packets sent
               0  Transit congestion loss
               0  Circuit down
               0  Initialization failure
               0  Adjacency down
             290  Peak adjacencies
         1934487  Data blocks sent
       354940121  Bytes sent
        49113655  Data blocks received
      2767931837  Bytes received
               0  Unrecognized frame destination
           51489  User buffer unavailable
    
    
    
    $ mc ncp sho known circ count
    
    
    Known Circuit Counters as of 31-MAY-1994 09:15:55
    
    Circuit = MFA-0
    
              15  Seconds since last zeroed
              63  Terminating packets received
              72  Originating packets sent
               0  Terminating congestion loss
               0  Transit packets received
               0  Transit packets sent
               0  Transit congestion loss
               0  Circuit down
               0  Initialization failure
               0  Adjacency down
             253  Peak adjacencies
         1951594  Data blocks sent
       357778631  Bytes sent
        49246529  Data blocks received
      2776435230  Bytes received
               0  Unrecognized frame destination
           51636  User buffer unavailable
    
    
    $ mc ncp sho known circ count
    
    
    Known Circuit Counters as of 31-MAY-1994 09:22:27
    
    Circuit = MFA-0
    
             106  Seconds since last zeroed
             678  Terminating packets received
             964  Originating packets sent
               0  Terminating congestion loss
             249  Transit packets received
             248  Transit packets sent
               0  Transit congestion loss
               0  Circuit down
               0  Initialization failure
               1  Adjacency down
             270  Peak adjacencies
         1956173  Data blocks sent
       358392278  Bytes sent
        49301852  Data blocks received
      2779648410  Bytes received
               0  Unrecognized frame destination
           51673  User buffer unavailable