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Domai_23823's avatar
Domai_23823
Icon for Nimbostratus rankNimbostratus
Mar 06, 2019

Slow SSL handshake on "Performance(Layer 4)" VIP.

Hello I am seeing a weird issue I have a "Performance(Layer 4)" VIP and the issue I see is when I do a - time openssl s_client -connect : I see a 4 sec delay on the initial SSL handshake after C...
application delivery
LTM
rafaelbn's avatar
rafaelbn
Icon for Cirrostratus rankCirrostratus
Mar 07, 2019

Hello Domai!

That's really odd... I have implemented this type of configuration on some clients and there was no delay. The BIG-IP is just forwarding at L4...

Can you do a tcpdump of the entire flow? Just to double-check that it's the BIG-IP introducing this delay?

It would be something like this:

tcpdump -nni 0.0 -s0 'host %vip_ip or host %node_ip' -w capture.pcap'

That way we will see the entire conversation....

If you can, please post the VIP configuration...

Cheers!