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Techgeeeg_28888's avatar
Techgeeeg_28888
Icon for Nimbostratus rankNimbostratus
Dec 07, 2013

Auto last hop in Virtual Server Config

Hi Everyone, I want my Virtual server to redirect the incoming user connections to a pool of servers with apology message in case if all the actual members in the load balancing pool are down. Under virtual servers I saw the configuration option auto last hop and last hop pool, is it used for the same purpose?? If this option is not used for this purpose then what is the use of this option?? and How can I achieve the redirection to the alternate pool??

 

Regards,

 

2 Replies

  • Kevin_Stewart's avatar
    Kevin_Stewart
    Icon for Employee rankEmployee
    Dec 07, 2013

    From the support site:

    Auto Last Hop is a setting that allows the BIG-IP system to track the source MAC address of incoming connections and return traffic from pools to the source MAC address, regardless of the routing table.

    See: http://support.f5.com/kb/en-us/solutions/public/13000/800/sol13876.html?sr=33722390

    So this has to do with return routing through an upstream device. To do what you're asking for, your best bet is probably an iRule. Here's an example.

    when CLIENT_ACCEPTED {
    set default_pool [LB::server pool]
}
when HTTP_REQUEST {
    if { [active_members $default_pool] < 1 } {
        pool sorry_server_pool         
    }
}