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Brad_Otlin's avatar
Brad_Otlin
Ret. Employee
Mar 06, 2013

Exchange 2010 SNAT Persistence iRule on Multiple VLANs

My BIGIP 11000s on V11.2.1 is fronting 16 Exchange 2010 CAS servers for Outlook Anywhere. The virtual server is using SNAT iRule to ensure SNAT IP persistence similar to this:   ********   whe...
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nitass's avatar
nitass
Icon for Employee rankEmployee
Mar 07, 2013
sorry i did not say clearly. actually, what i meant is LB::server addr commamnd. i understand it may return null in HTTP_REQUEST event because pool member has not yet been determined in that event.

e.g. 

[root@ve10:Active] config  b rule myrule list
rule myrule {
   when HTTP_REQUEST {
  log local0. ""
  log local0. "client [IP::client_addr]:[TCP::client_port] server [LB::server addr]"
}
when LB_SELECTED {
  log local0. "client [IP::client_addr]:[TCP::client_port] server [LB::server addr]"
}
when HTTP_RESPONSE {
  log local0. "conn [IP::client_addr]:[TCP::client_port] > [clientside {IP::local_addr}]:[clientside {TCP::local_port}] > [IP::remote_addr]:[TCP::remote_port]"
}
}

[root@ve10:Active] config  tail -f /var/log/ltm
Mar  8 08:39:13 local/tmm info tmm[22185]: Rule myrule :
Mar  8 08:39:13 local/tmm info tmm[22185]: Rule myrule : client 172.28.19.251:42612 server
Mar  8 08:39:13 local/tmm info tmm[22185]: Rule myrule : client 172.28.19.251:42612 server 200.200.200.111
Mar  8 08:39:13 local/tmm info tmm[22185]: Rule myrule : conn 172.28.19.251:42612 > 172.28.19.252:80 > 200.200.200.111:80
Mar  8 08:39:14 local/tmm info tmm[22185]: Rule myrule :
Mar  8 08:39:14 local/tmm info tmm[22185]: Rule myrule : client 172.28.19.251:42613 server
Mar  8 08:39:14 local/tmm info tmm[22185]: Rule myrule : client 172.28.19.251:42613 server 200.200.200.101
Mar  8 08:39:14 local/tmm info tmm[22185]: Rule myrule : conn 172.28.19.251:42613 > 172.28.19.252:80 > 200.200.200.101:80