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Conference lassie::ucx

Title:DEC TCP/IP Services for OpenVMS
Notice:Note 2-SSB Kits, 3-FT Kits, 4-Patch Info, 7-QAR System
Moderator:ucxaxp.ucx.lkg.dec.com::TIBBERT
Created:Thu Nov 17 1994
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:5568
Total number of notes:21492

5254.0. "Problem with erratic behavior with cluster impersonator." by CSC32::R_WILLIAMS () Thu Feb 20 1997 20:07

    VAX/VMS 6.2-1H3
    UCX 4.1
    
    Hi,
    
    I have a customer who is having a problem with the way that his cluster
    interface is being changed.  He has referred to the Management
    documentation section 4.4.1 on Cluster Alias.  He has a 2 node cluster
    and the CLUSTER_TIMER is set to 5 minutes on both nodes.  Nobody is
    using his cluster_alias.  WE0 is dedicated to his cluster alias IP on
    both nodes.  He also has WE1 and WE2 on these systems.  So, with nobody
    connected to WE0, he is expecting to see the cluster switch over every
    5 minutes.  What he is seeing is a switch on one node after 9 minutes
    and on the other node after 14 seconds.
    
    He was explaining that from his Unix system, he is issuing an ARP
    request that will return back ethernet controller information.  This is
    where he sees the difference in cluster data.  He expects to see the
    change every 5 minutes.
    
    What is going on with the cluster impersonator?  Why does it not switch
    back and forth every 5 minutes?
    
    Thanks for any insights on this.
    
    -Rick
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