topic ACE routed mode in Application Networking

ACE routed mode

kalugotla1 — Wed, 03 Oct 2012 18:32:57 GMT

Two ACEs LoadBalancers are setup as active standby in routed mode.

serverfarm host s1
predictor leastconns
probe PROBE_HTTP
rserver app1
inservice
rserver app2
inservice

class-map match-all s1_CLASS
2 match virtual-address 10.12.7.11 tcp any

policy-map type management first-match remote_mgmt_allow_policy
class remote_access
permit

policy-map type loadbalance first-match s1_POLICY
class class-default
serverfarm s1

policy-map multi-match POLICY
class s1_CLASS
    loadbalance vip inservice
    loadbalance policy s1_POLICY
    loadbalance vip icmp-reply active

we had one connection from client to app2 server

performed a code upgrade on LB2 ,did a swithover to make LB2 active,.the client connection was still on app2 server

when LB1 was upgraded and made it primary , the connection was still on app2 .

but after couple mins was seeing the connection on app1 ,instead of app2 .

please help me on this

when

ACE routed mode

Karsten Iwen — Wed, 03 Oct 2012 19:01:00 GMT

you don't have any stickyniss configured. So your connections (also from the same client) can land on any of your two servers. That's a normal behaviour.

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ACE routed mode

kalugotla1 — Wed, 03 Oct 2012 20:15:20 GMT

is there anyway I can get this working ,without sticky configured .for a persistence connection.

ACE routed mode

Karsten Iwen — Wed, 03 Oct 2012 20:19:54 GMT

what exactly is not working?

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ACE routed mode

Jorge Bejarano — Thu, 04 Oct 2012 23:00:30 GMT

Hi,

What you saw it is totally expected behavior.

What happens is that the ACE will keep the connections active and they will be served until the either the connection is closed by the client( by closing the browser) or times out due to inactivity, then if you switchover to another ACE then all "NEW" connections will be handled by the new master ACE since there´s no reason to send the traffic to the previous master ACE because it is not longer the Primary.

Again, this is expected.

Hope this helps

Jorge