One of my ISP customers has multiple 2Gbps national ethernet circuits through two different providers.
Testing the circuits of Provider A gives UDP in excess of 1.8Gbps with no packet loss, and TCP up to 1.8Gbps in both directions. However, with provider B, I am seeing UDP packet loss when going over 1.5Gbps and TCP of less than 1Gbps even as low as 600M for upload tests (Download tests same as provider A). This is consistent across multiple circuits and leads me to believe that Provider B is using a download shaper but an upload policer which is causing significant issues with circuit speeds. I have always tried to shape on egress at either end of a circuit wherever possible as ingress policers can be somewhat aggressive, but just wondering how common the use of policers is within the UK network operators? Best regards, Paul Bone Network Consultant and Director 07803 570805 [cid:[email protected]]
