Forum Discussion
Vince_Beltz_959
Nimbostratus
NimbostratusHold Connection / No Pool
Got a proposal from one of our devs this AM, who wants to set up the following scenario on an LTM.
He proposes a group of clients, all trying almost constantly to connect with a VIP. Th...
I set up a test VIP with the connection limited to one, and the dev who made the original request just got around to testing. Watching connections via Wireshark, it appears that the LTM is sending a RST almost immediately after finishing the three-way handshake, presumably because there's no pool behind the VIP. Any ideas on what we can do to prevent that?
The easiest thing you can do is add an HTTP profile. Long story short, the TCP profile doesn't wait for any data to tell the TCP proxy in the BIG-IP that a new connection has arrived, so it will try to load-balance it, which will fail (no pool) and reset the connection as you found. HTTP, on the other hand, will wait for an HTTP request before alerting the TCP proxy about a new connection. Since your clients aren't sending any data, it shouldn't hurt anything.
