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Conference irocz::common_brouters

Title:Digital Brouters Conference
Notice:New common-code brouter family: RouteAbout, DECswitch 900
Moderator:MARVIN::HARTLL
Created:Mon Jul 17 1995
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:929
Total number of notes:3736

823.0. "OSPF Load Balance ?" by HGOM19::MARKWU () Mon Mar 31 1997 23:01

    Dear colleagues:
    
           |--------|
           | RA900  |
           |--------|
              |  |
           DDN|  |E1-2M
           64K|  |
             |----|
             |RA90|
             |----|
    
        The problem is when the custom start FTP transfer,
        They find some IP packet will go on DDN line.
        And the total speed is lowly than one E1 way !
    
        Could you tell me why, and which measure-method is
        right ?
    
    
    Best/regards
    Mark
T.RTitleUserPersonal
Name		DateLines
823.1MARVIN::CLEVELANDTue Apr 01 1997 05:128
    When you use a path-split the packets are sent over the interfaces in
    'round-robin' fashion.  So the E1 link will be underutilized since
    eventually the throughput and delay characteristics of the 64K link
    will dominate the end-to-end TCP session window size negotiations. That
    may sound overly technical - just remember the rule is to only group
    links with similar speed & latency (even when using Multilink PPP). 
    
    Tim
823.2:) ThanksHGOM19::MARKWUTue Apr 01 1997 21:404
    Thanks.
    
    
    Mark