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Donnie_94135's avatar
Donnie_94135
Icon for Nimbostratus rankNimbostratus
Jan 29, 2008

UIE - Source Mac Address

I have two GTMs. Each has its own ISP. I would like traffic bound for GTM-1 through ISP1 to go to Pool Member 1 on a VS. And I would like traffic bound for GTM-2 through ISP-2 to go to Pool Member 2 on the same VS.

 

 

Traffic is directed to the GTM via BGP, so in many cases I don't know the source IP address in advance. Both GTMs are in the same synch group. Is there a way to direct traffic to a specific pool member if the request is from a particular mac address? Or is there a better way?

 

 

Thanks,

 

Donnie

 

application delivery
dev
devops
iRules

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  • JRahm's avatar
    JRahm
    Icon for Admin rankAdmin
    Jan 29, 2008
    You could use LINK::lasthop, but unfortunately that is not a valid command for GTM. If your GTM's are in different vlan's, you can do this:

    
when DNS_REQUEST {
  if { [LINK::vlan_id] eq "10" } {
    log local0. "Connection is from RTR1"
    pool myPool-http member 10.1.1.10
  } elseif { [LINK::vlan_id] eq "20" } {
    log local0. "Connection is from RTR2"
    pool myPool-http member 10.1.2.10
  }
}

  • JRahm's avatar
    JRahm
    Icon for Admin rankAdmin
    Jan 31, 2008
    Yes, it should be applied to any wideIP in which this functionality is desired.
  • Donnie_94135's avatar
    Donnie_94135
    Icon for Nimbostratus rankNimbostratus
    Jan 31, 2008
    I am seeing th error below. The pool memeber is right. Any ideas?

     

     

    TCL error: Rule DNS_Request_WWW - Failed to find pool member: poolmbr line 6 invoked from within pool pl_www_208 member .32.208.12

     

     

    Thanks for your help!
  • JRahm's avatar
    JRahm
    Icon for Admin rankAdmin
    Jan 31, 2008
    Hmm, worked fine in my lab. Does GTM see your pool members as available? You may want to enhance the rule to add a status check before assigning the pool member.