8. Persistence

Modify the GSLB configuration so that LDNS servers continually receive the same DNS answer.

  1. On dns.sitea navigate to: DNS ›› GSLB : Pools : Pool List ›› Members : www.f5demo.com_pool

    ../../_images/gslb_wideip_list.png

  1. Click into the “Pools” tab:

    ../../_images/gslb_wideip_list_members.png

  1. Enable Persistence

    ../../_images/gslb_wideip_persistence_enabled.png

    TMSH

    tmsh modify gtm wideip a www.wip.f5demo.com persistence enabled

  2. View Persistence Records - There won’t be any records at this time

    TMSH

    tmsh show gtm persist

  3. From the Windows 10 jumpbox, test resolution for www.f5.demo.com multiple times (dig www.f5demo.com). It will resolve to the same IP each time

  4. Recheck Persistence Records - You should see a persistence record for the Windows 2019 Server that is making the query for the Windows 10 client

    TMSH

    tmsh show gtm persist

  5. Disable persistence - Change can be made on either dns.site1 or dns.siteb

    TMSH

    tmsh modify gtm wideip a www.wip.f5demo.com persistence disabled