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Exploring CSS 11503 sticky table / sticky mask

Hi All

I am currently undergoing some testing with a client.

We have a VIP load balancing 8 instances. We are testing with the following configs

content test-test

    add service a

    add service b

    add service c

    add service d

    add service e

    add service f

    add service g

    add service h

    vip address 10.10.10.1

    flow-timeout-multiplier 225

    sticky-mask 255.255.255.252

    redundant-index 1000

    port 443

    protocol tcp

    advanced-balance sticky-srcip-dstport

    sticky-inact-timeout 360

    balance leastconn

active

We  have traffic been sourced from 32 IP addresses and want all 8 instances  to be used/hit, but this is not happening in all instances.

(from the above config, 4 consecutive IPs will be stuck to the same instance based on the sticky mask -- yes?)

For instance I would expect the following: with the Test IP addresses used based on the sticky mask:

10.120.1.168

10.120.1.169

10.120.1.170

10.120.1.171 

(to be stuck to maybe instance a)

10.120.1.176

10.120.1.177

10.120.1.178

10.120.1.179

(to be stuck to maybe instance b)

I have tried the following command during tests:

show sticky-table l4-sticky ipaddress 10.10.10.1  255.255.255.252  443

and get an empty table back.

L4 Sticky List on Slot 1, subslot 1:

Entries for page 1.

Entry   Hash    Rule Rule  Srv  Srv      Time(Sec)     Hit Col  Elem Inact

Number  Value   Indx State Indx State    Elapsed       Cnt Cnt  Type Cfg(Min)

------------------------------------------------------------------------------

Total number of entries found is 0.

L4 Sticky List on Slot 2, subslot 1:

Entries for page 1.

Entry   Hash    Rule Rule  Srv  Srv      Time(Sec)     Hit Col  Elem Inact

Number  Value   Indx State Indx State    Elapsed       Cnt Cnt  Type Cfg(Min)

------------------------------------------------------------------------------

Total number of entries found is 0.

I would like to ascertain what source IP address is been stuck to what load balanced instance at any one time.

I have tried looking at the flow table but, that clears out quite quicky so not really an accurate method.

Thanks!

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