Forum Discussion
NimbostratusLoad Balance traffic based on source IP location to hit local proxy.
I have a request to load balance traffic coming to proxys based on the source IP subnet (Location). So, if it comes from subnet 1.xc.0.0/16 and 1.df.0.0/16 and pool-A is up then send it to Proxy-A elseif 1.xc.0.0/16 and 1.df.0.0/16 and pool-A is Down then send it to Proxy-B. And if it comes from subnet 10.rt.0.0/16 and 10.nm.0.0/16 and pool-B is up then send it to Proxy-B elseif 10.rt.0.0/16 and 10.nm.0.0/16 and pool-B is Down then send it to Proxy-A. I tryed the below iRule but it keep defaulting to on Proxy.
when DNS_REQUEST { if {([IP::addr [IP::remote_addr]/16 equals 10.xc.0.0/16]) and ([active_members proxy_NJ_80_pool] > 0)}{ host } elseif { ([IP::addr [IP::remote_addr]/16 equals 10.xc.0.0/16]) and ([active_members proxy_NY_80_pool ] > 0)}{ host } elseif {([IP::addr [IP::remote_addr]/16 equals 10.nm.0.0/16]) and ([active_members proxy_NY_80_pool] > 0)}{ host } elseif { ([IP::addr [IP::remote_addr]/16 equals 10.nm.0.0/16]) and ([active_members proxy_NJ_80_pool ] > 0)}{ host } else { host } }
6 Replies
- JRahm
Admin
just for clarification, you are wanting to distribute the dns requests, or the http requests? 
AbuAhmadYes Jason, the DNS request. I have 40 Subnets/16 that are coming out of two sites and need each to hit the local proxy if it is up and if it is down to hit the other site's proxy.
Cory_50405Noctilucent
Rather than an iRule, it sounds like topology based load balancing might be best for you.
http://support.f5.com/kb/en-us/products/big-ip_gtm/manuals/product/gtm-topology-lb-configuring-11-0-0/1.html
- JRahm
Is this with GTM or LTM iRules?
- AbuAhmad
It is on the GTM V.10.2.1
- JRahm
ok, with GTM I agree with Cory, topology is the way to go. If this was LTM with the dns services license, I'd recommend a datagroup with the source IP as the key and the proxy destination as the value, then it's a very short iRule.
