Conference nac::rbms_lanbridge100

769.0. "Spanning tree and loop detection" by ACISS2::GIENKO () Wed Feb 19 1997 15:11

    
    I have a question pertaining to loop detection on a LANbridge 200
    or any of our other bridge products.  I have an understanding of 
    how the spanning-tree algorithm detects loops,  however what happens
    if the bridge see the same address on both ports (in the case of
    a 200) or multiple ports with one of our other bridges.  Will
    the bridge sense that there is a loop and put one of the ports
    in backup,  will it have 2 entries in the forwarding table with
    the same address but different ports or will it keep updating
    one entry in the forwarding table indicating which port is the
    source of the address.  I believe this could only happen if there
    are parallel devices not participating in the spanning tree or
    if there is an intermittant malfunction in a bridge participating 
    in the spanning tree.
    
     Thanks for your input,
    
    Mike