It's unlikely that QoS is going to solve this problem unless you can properly classify the backup data from everything else. Depending on the age/type of the AP, it's firmware, and the clients connected to it, ensuring fair use of the radio may be more of a problem than the amount of traffic being passed. Packet shaping is one alternative, but that's assuming it's a data capacity and not a radio fairness issue.
You may simply be at the point of exceeding your current wireless design, and it may be time to look at a upgrading to 802.11n, increasing AP density, or a combination of both. In my residential areas, since 2003 we've provide wired gigabit connections to our students, yet they prefer the freedom of our WiFi network. Given the trend, we designed and deployed our new WiFi network with capacity and not coverage as the primary factor. The design resulted in a dense AP deployment, providing a dual-channal 802.11n AP per ~7-12 residential students. A dual-channel AP per ~7-12 users may seem excessive to some, but the reality is that WiFi is now the primary/only network for the majority of our students, and as such, it needs to perform at an appropriate level. If a student want's to transfer 1TB or data, stream movies, edit photoshop files, etc. the wireless design/network shouldn't be a limiting factor. Jeff >>> "Urrea, Nick" 04/22/10 9:47 AM >>> We are experiencing a problem in our dorm where one wireless user will use all of the Available bandwidth on an 802.11g Autonomous AP's radio. We are currently using a Bluecoat Packeteer packet shaper to shape traffic at the Internet. The problem I have seen is with user on-line backups, either to a Time Capsule (student moved a terabyte of data in a month) or to (mozy, Backblaze, etc.). We receive complainants that the Internet is slow. I am new to setting up QoS on cisco devices. Is there a way of limiting through QoS on an AP, so that if a student is using all of the radio's bandwidth other users using the same AP have a fair share of bandwidth? I would prefer not to rip and replace our 802.11g APs for 802.11N APs. Any other ideas are welcomed. Nicholas Urrea Information Technology UC Hastings College of the Law urr...@uchastings.edu x4718 ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
