I ran into a very interesting half-duplex anomaly the other day: My bandwidth is nominally 2mb/20mb, but is reliably about 1.1mb up and 11mb down My shaping policy is based on the latter presumptions. Like most affordable 'net connections (cable, dsl) my speeds are HALF duplex, unlike expensive T's, multilink T's and fiber Ethernet etc which are all of course full duplex.
Not surprisingly my UPLINK is pushed closer to its reliable maximum that my fat downlink. The phenomenon is that when my uplink is pegged (and flowing perfectly without notable dropped packets), my maximum downlink is effectively squeezed, and I lose RTP packets. I presume because there are fewer open 'frames' remaining in which to stuff inbound packets because I'm cramming them full of outbound packets. At present the only way I can think to avoid this problem is to throttle back my uplink even FURTHER which causes me to lose even more precious upstream bandwidth. Is that the only way to deal with this issue? I would think there could be a dynamic shaping policy with a 'half duplex' checkbox in the shaping wizard that changes shaping policy dynamically based on the load seen on the opposite leg of the connection, and the ratio of asymmetry on the pipe. I imagine it would be quite tricky to implement on the back end. I'm new to forum so I presume this may have been discussed before. If not, I welcome everyone to weigh in. My understanding is that 1.3 (and 1.2.1?) has a new shaping engine. Is this a design consideration? --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
