Forum Discussion
Mark_Bark_24174
Nimbostratus
NimbostratusGTM Source IP Redirect to Specific Pools iRule
I'm trying to redirect clients to specific pools based on the clients IP address through an iRule. I created this iRule in the GTM and it seems to be working fine however, I'd like to set client networks in the rule instead of "starts_with" in an effort to keep this rule as short as we add more and more clients. I've tried "equals "10.80.0.0/16" however that didn't seem to work. Anyone have any ideas on what I could do to achieve my goal?
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when DNS_REQUEST { if { [IP::client_addr] starts_with "10.80." } { pool pool_10_80 } elseif { [IP::client_addr] starts_with "10.96." } { pool pool_10_96 } elseif { [IP::client_addr] contains "172.27." } { pool pool_172_27 } }
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Thanks in advance for any feedback.
Lee_SutcliffeNacreous
You can use
so that you may use a CIDR mask notation for the subnet:[IP::addr]https://devcentral.f5.com/wiki/iRules.IP__addr.ashx
when DNS_REQUEST { if { [IP::addr[IP::client_addr]] equals "10.80.0.0/16" } { pool pool_10_80 } elseif { [IP::addr[IP::client_addr]] equals "10.96.0.0/16" } { pool pool_10_96 } elseif { [IP::addr[IP::client_addr]] equals "172.27.0.0/16" } { pool pool_172_27 } }
Stanislas_Piro2Cumulonimbus
GTM never sees real client IP but LDNS IP.
if all internal users uses the same DNS server, the GTM will answer based on the DNS server IP.
Brian_AchenbaughCirrus
Is there a way around this at all? I think this preventing the topology LB from working, from what im reading.