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iCongo_Live_Dev's avatar
iCongo_Live_Dev
Icon for Nimbostratus rankNimbostratus
Mar 18, 2011

F5 reboot when restarting a server from the pool

Hi everyone,     This irule will still send traffic to a non available server in the pool. Which causes a Syn flood. We were told this by support "Using the LB::reselect iRules command without a...
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Austin_Geraci's avatar
Austin_Geraci
Icon for MVP rankMVP
Mar 18, 2011
Without looking at your iRule, I know there is an issue with LB:reselect and syn floods from experience..

 

 

Check out this wiki on LB:reselect It has some sample code you may be able to use.

 

 

http://devcentral.f5.com/wiki/default.aspx/iRules/LB__reselect.html

 

 

It also has a link to AskF5 SOL10386 - Using LB::reselect iRules command without a limiting mechanism may result in a SYN flood

 

 

https://support.f5.com/kb/en-us/solutions/public/10000/300/sol10386.html

 

 

Hope it helps!