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statmp_87631's avatar
statmp_87631
Icon for Nimbostratus rankNimbostratus
Dec 19, 2011

iRules with subnet failed.

Hi,I met a problem with iRules recently, below is our iRules:

 

 

 

if { [IP::addr [IP::remote_addr] equals 221.177.152.0/26] } {

 

 

 

pool CMNET }

 

 

 

else { pool CMWAP_ OTHER }}

 

 

 

if the DNS query client with IP address 221.177.152.33 send a DNS message, f5 will answer with pool CMWAP_OTHER.

 

 

 

 

 

and if we change the iRules to below, the answer will be correct with pool CMNET.

 

if { [IP::addr [IP::remote_addr] equals 221.177.152.33/32] } {

 

pool CMNET }

 

else {

 

pool CMWAP_ OTHER

 

}

 

}

 

 

 

so , what's the difference between a host and a subnet int iRules?

 

thanks

 

 

 

 

 

 

application delivery
dev
devops
iRules
  • statmp_87631's avatar
    statmp_87631
    Icon for Nimbostratus rankNimbostratus
    Dec 20, 2011
    very strange, this format will work fine:

     

    if { [IP::addr [IP::remote_addr]/26 equals 221.177.152.0] }
  • JRahm's avatar
    JRahm
    Icon for Admin rankAdmin
    Dec 20, 2011
    what version are you on? That doesn't look right at all. BTW, the comparison should be last for the most efficient operation, though in your case, it doesn't appear to be working. Here's an article I wrote on the various methods for comparing IP addresses:

     

     

    Click Here

     

     

  • statmp_87631's avatar
    statmp_87631
    Icon for Nimbostratus rankNimbostratus
    Dec 21, 2011
    my version: BIGIP-10.2.1.297.0.iso

     

    I don't think this is a good methord to compare also, but it is the only way can work.

     

    and after I read your article then change to this statement.