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Conference kali::dewbr

Title:DECbrouter-90T2,-T2A,-T1
Notice:Kits, DOCs, Release notes, SPDs notes 1-10
Moderator:FOUNDR::SHEEHAN
Created:Wed Dec 23 1992
Last Modified:Thu Jun 05 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:1313
Total number of notes:4889

1266.0. "frame-relay slow terminal response" by GIDDAY::CHONG (Andrew Chong - Sydney CSC) Fri Jan 17 1997 04:31

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1266.1GIDDAY::CHONGAndrew Chong - Sydney CSCFri Jan 24 1997 04:0918
    
    Can someone please help with .0 ? I have little experience with
    Frame-relay and cannot provide a convincing explaination to the
    bahaviour in .0
    
    
    The customer wants to know if there is any tuning technique to get a
    more consistant terminal response from his frame-relay connection. 
    A pause in the order which he experienced ( a minutes or 2 ) seems
    abnormal or it it to be expected . He does get BECN and FECN but but 
    to a very large extent. It seems like a few congested packets occured 
    and then the terminal response becomes very unacceptable. 
    
    Is there any valid explaination for these ?
    
    Thanks for any help .
    
    Andrew
1266.2Congestion = Frame discard = poor performanceSPANKY::BUDZINSKIFri Jan 24 1997 16:3810
    BECN and FECN indicates that there is congestion on the Frame Relay
    switch and frames are being discarded. What are your Committed
    Information Rates (CIRs) on your PVCs (Permanent Virtual Circuits)? You
    should probably check the router configurations to make shure that
    bridging is not enabled and that excessive broadcast/multicast traffic
    is not saturating your links.
    
    Regards,
    
    John
1266.3GIDDAY::CHONGAndrew Chong - Sydney CSCSat Jan 25 1997 23:438
    
    The CIR is 0, according to the frame-relay supplier this should be ok 
    for terminal traffic. I have doubts about the statement myself. 
    Bridging is turned on and I don't think turning it off is an option for
    the customer. I just like to confirm that with his setup (see config in
    .0) and CIR of 0 the symptom is to be expected. 
    
    Andrew