Timur I have an open case with Jtac concerning rate limiters (2008-1210-0681) For some reason the algorithm used is not letting traffic reach the configured bandwith
-----Original Message----- From: juniper-nsp-boun...@puck.nether.net [mailto:juniper-nsp-boun...@puck.nether.net] On Behalf Of Timur Ibragimov Sent: Friday, December 26, 2008 9:40 AM To: Tom Storey Cc: juniper-nsp@puck.nether.net Subject: Re: [j-nsp] Rate limiting Tom Storey wrote: > A burst size of 1.5kbps as you have configured in your example only allows > traffic to increase at 1.5 kilobits each second, not a hell of a lot. At > that rate it would take upto 1000 seconds, i.e. 16 minutes to reach the > full 1.5 megabits you are wanting to supply... > I thought that burst-size-limit is measured by bytes (not 1.5kbps, but 1.5KB) and only important when the traffic flow is above the limit of 1500 kbps according to the token-bucket algorithm. Well in my case packets begin dropping at even lower rates. > That is going to cause considerable packet loss as the permittable traffic > level is gradually increased. > Im no expert on the subject, particularly when it comes to Juniper, but I > have found on my Ciscos that a burst size of 5-10% of the CIR works pretty > well for TCP traffic on multi megabit policers. For sub megabit policers a > minimum of 64kbit works pretty well. Though having said that Ive never > really looked into the loss figures for any of these policers, so I dont > know how well they perform. > Tom -- Best regards, Timur Ibragimov _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp