Forum Discussion
Jack_H_39707
Nimbostratus
NimbostratusConnection Limit on Virtual Server
Dear all, recently I have configured the Connection Limit on the virtual server to limit the number of connections. However, whenever a established connection goes idle for 1 minutes, the existing connection will drop and refresh (no stickiness). The persistence i use was source address. Would appreciate if there is anyone could advise or share your experience with the similar issue before. Thanks all in advance.
Jack_H_39707Just to add on. Can anyone advise me if my statement of understanding is correct.
1. If i am using cookies as persistence and happened that my connection is outside the connection limit range allows. my connection will be drop but once I am in the range of connection limit allows, I will still obtain the same session to continue my process since my cookies is still alive.
2. If i am using source address as persistence and happened that my connection is outside the connection limit range allows. my connection will be drop even i try to reconnect and inside the range of connection limit allows. I would not be able to be using the same session which has timeout.
Sorry for the trouble. Will really appreciate if anyone could advise. Thanks!- Chris_Miller
Altostratus
The great thing about cookies is that even though the TCP connection may have been deleted, the user will still get sent to the right resource. If using source_address persistence, a record is created in the persistence table that maps their source IP to a pool member. There's a "source_addr" persistence profile that's configured with a certain timeout value - when that timer expires, the F5 deletes the record and there's no guarantee that the user will get sent to the correct resource if/when they come back. - Jack_H_39707Got it, really appreciate for your advise, Chris!
