When you burst, you get DE's. It's not a problem. FECN and BECN are status messages from frame switch telling router to slow down (you can ignore them if you want). DE's are just tags on the packet that tell the frame switches that if it has to drop any packets due to congestion, drop you DE packets first. They may or may not have been dropped, but they are the first to be eligible.
They will *try* and not drop your regular packets under your CIR cause that's what they promised you under good conditions. They also promised other customers on that network a certain speed too. So if there is only 356k of total speed (this is theory of cource) in your providers network, and you both have CIR's of 128k and Be of 256k and other customers have cir's of 128k and Be of 256k, obviously you all can't all burst at 256k if there is only 384k to go around. So the frame proveder would let all of your 128k traffic through and the bursted 128k would have been tagged with DE's, and if there was no bandwidth left, your DE's get dropped. Steve ""DAGENHARDT Frank"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Group, > > I thought I had FECN and BECN down in regards to frame relay setup. Recently > I have come across some router output that doesn't make sence to me. > I don't understand why I have DE pkts when I don't have and FECN or BECN > errors. Or for that matter how I can have so many DE pks and no of them were > dropped. I was thinking of implementing traffic shaping, but I don't know if > that will help if I am not receiving any BECN errors. On top of that I > understand that when your CIR is reached packets get marked DE but at what > point do they actually get dropped. Can someone try to make a little sence > out of this for me? > > DLCI = 131, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = > Serial0/1.131 > > input pkts 29103083 output pkts 23370364 in bytes 3538537810 > out bytes 941866396 dropped pkts 13 in FECN pkts 0 > in BECN pkts 0 out FECN pkts 0 out BECN pkts 0 > in DE pkts 1154469 out DE pkts 0 > out bcast pkts 1379364 out bcast bytes 110300947 > pvc create time 10w2d, last time pvc status changed 3w2d > > Thank you, > Frank Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=29683&t=29675 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
