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...
L4L7_53191Nimbostratus
NimbostratusInteresting. I don't expect that on a standard virtual server. Below I do a telnet to my virtual server (a standard HTTP virtual server on port 80). The source IP is 10.100.100.1 and dest is 10.100.100:80
10:34:42.137449 IP 10.100.100.1.4770 > 10.100.100.80.http: S 3192099991:3192099991(0) win 65535
10:34:42.137839 IP 10.100.100.80.http > 10.100.100.1.4770: S 3328880791:3328880791(0) ack 3192099992 win 4380
10:34:42.137898 IP 10.100.100.1.4770 > 10.100.100.80.http: . ack 1 win 65535
So the 3 way handshake is set up. I don't push any data and just let it sit there idle. It stays pinned up, and no RST occurs. 12 or so seconds later I quit my telnet session and we do a graceful close:
10:35:02.970000 IP 10.100.100.1.4770 > 10.100.100.80.http: F 1:1(0) ack 1 win 65535
10:35:02.971151 IP 10.100.100.80.http > 10.100.100.1.4770: . ack 2 win 4380
10:35:02.972023 IP 10.100.100.80.http > 10.100.100.1.4770: F 1:1(0) ack 2 win 4380
10:35:02.972196 IP 10.100.100.1.4770 > 10.100.100.80.http: . ack 2 win 65535
In other words, assuming they're not sending data and you're using a standard tcp profile (I'd expect to see [PSH] in your capture, above) the connection shouldn't reset.
-Matt
