Question : What does "WMS Ageout" mean and what is the impact of modifying the WMS ageout interval?
Environment Information :
Any Aruba Controller
Any Access Point
Any Aruba OS
Symptoms :
Disabling WMS ageout or a large value of WMS ageout can potentially cause memory issues on the Controller for a large deployment with lots of users as well as a with small deployment with very few APs/clients. Especially Controllers with lesser memory like 6x0/SC1/A2400/800/200.
Cause : WMS ageout will age out the entries in WMS database for AP and client like the listed items in "show wms client list/show wms ap list". If we disable the ageout, the WMS keeps growing and can cause performance issues.
Resolution : WMS ageout will age out the entries in WMS database for AP and client like the listed items in "show wms client list/show wms ap list". Disabling WMS ageout or a large value of WMS ageout can potentially cause memory issues on the Controller for a large deployment with lots of users as well as a with small deployment with very few APs/clients. Especially Controllers with lesser memory like 6x0/SC1/A2400/800/200. As long as the APs can hear a lot on the air, WMS can still grow. WMS holds everything the APs/AMs can scan over the air. Precisely, WMS database records all interfering, known-interfering, suspected rogues, rogues, valid APs and clients. Default WMS Ageout is 30mins.
Answer :
WMS ageout will age out the entries in WMS database for AP and client like the listed items in "show wms client list/show wms ap list". Disabling WMS ageout or a large value of WMS ageout can potentially cause memory issues on the Controller for a large deployment with lots of users as well as a with small deployment with very few APs/clients. Especially Controllers with lesser memory like 6x0/SC1/A2400/800/200. As long as the APs can hear a lot on the air, WMS can still grow. WMS holds everything the APs/AMs can scan over the air. Precisely, WMS database records all interfering, known-interfering, suspected rogues, rogues, valid APs and clients. Default WMS Ageout is 30mins.