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Vince_Beltz_959's avatar
Vince_Beltz_959
Icon for Nimbostratus rankNimbostratus
Feb 18, 2010

Hold 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...
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Vince_Beltz_959's avatar
Vince_Beltz_959
Icon for Nimbostratus rankNimbostratus
Mar 17, 2010
Anyone still reading this?

 

 

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?

 

 

10.00000010.110.192.15667.63.60.145TCP38346 > 65535 [SYN] Seq=0 Win=65535 Len=0 MSS=1460

 

20.00188467.63.60.14510.110.192.156TCP65535 > 38346 [SYN, ACK] Seq=0 Ack=1 Win=4380 Len=0 MSS=1460

 

30.00192010.110.192.15667.63.60.145TCP38346 > 65535 [ACK] Seq=1 Ack=1 Win=65535 Len=0

 

40.00339467.63.60.14510.110.192.156TCP65535 > 38346 [RST, ACK] Seq=1 Ack=1 Win=4380 Len=0