BIGIP with HASH persistance + CARP

Hi guys.

 

I`m testing on L3 n path topology with using HASH persistance(+CARP) + fastL4 idle time 0.

 

I need to implement below things...

 

1. would like to use less resources of BIGIP when burst traffic comes in -> as possibly less create connection table, persistance records.
2. using CARP maybe HASH persist?. Source Address Affinity with CARP didn`t work.

for this things, I configurations like this. but not work well.

 

I used stateless virtual server, but BIGIP only support L3-N path on performance L4.

 

when get low amount of data, before flushing connection table(configuration of idle time is immediate, it take 2~4s) communication was successfully ended.

 

but when large amount of data, during download connection was failed.

 

My configuration was below, How can I implement?

 

ltm virtual VS_10.10.10.10-80-L3DSR { destination 10.10.10.10:http ip-protocol tcp mask 255.255.255.255 persist { CARP_HASH { default yes } } pool P-10.10.10.10-80-L3DSR profiles { L3DSR-TCP-Profile { } } source 0.0.0.0/0 translate-address disabled translate-port disabled vs-index 2 }

 

ltm profile fastl4 L3DSR-TCP-Profile { app-service none defaults-from fastL4 hardware-syn-cookie disabled idle-timeout 1 loose-close enabled pva-acceleration none tcp-handshake-timeout 10 }

 

ltm persistence hash CARP_HASH { app-service none defaults-from hash hash-algorithm carp }

 

ltm pool P-10.10.10.10-80-L3DSR { members { 50.50.50.100:http { address 50.50.50.100 session monitor-enabled state up } } monitor M-10.10.10.10-TCP-80-L3DSR profiles { ipip } }

 

ltm monitor tcp M-10.10.10.10-TCP-80-L3DSR { defaults-from tcp destination 10.10.10.10:http interval 5 ip-dscp 0 recv none recv-disable none send none time-until-up 0 timeout 11 transparent enabled }