Wierd metro WiFi problem
"Tyler van Houwelingen" <[email protected]>
| Newsgroups | gmane.network.wireless.seattle.general |
|---|---|
| Message-ID | <00f101c622ab$6e62d280$0a0010ac@ty1> |
I am contacting the best wireless minds I know to help with a bizarre issue that has us stumped. Situation: - We have 4 bonded T1 lines currently for our backbone, running a large (400 AP) metro WiFi network. - When connecting directly into the backbone router, we get 6M down, 6M up as expected. - However, when we begin to add a little latency between a testing PC and the backbone connection, the upload speed stays the same, but the download gets hammered. With 10ms of average latency from the metro WiFi network side, the speed drops to 2M down and 5M up. At 40ms, it is around 800k/5M. - The wireless communications are more than fine as we get 8M/8M back to our headquarters from anywhere in the metro WiFi network. The problems only come from testing into the Internet. We get the same goofy results when we disconnect the city network completely and just add latency in the lab. - We have run all the DrTCP (MTU, RWIN) like tricks which provides some improvement, but not much. Why would this additional latency kill the downloads so much? I suspect the problem is with our backbone provider (Expedius) or some limitation of metro WiFi that worries me. In our other metro WiFi network, we do not see this, but they all use a different backbone provider (AT&T). Any suggestions to debug/fix this would be very much appreciated. tyler Tyler van Houwelingen Founder and CEO Azulstar Networks, Inc. 1051 Jackson, Grand Haven, MI 49417 1117 Rio Rancho Blvd 13, Rio Rancho, NM 87124 1-877-AZULSTAR www.azulstar.com _______________________________________________ Talk mailing list [email protected] http://seattlewireless.net/mailman/listinfo/talk