GTM doesn't seem to resolve its own WIP

Question

Hello,&nbsp;
So I've spun up a new GTM (11.2.1) and there are two LTM's (each at different datacenters).  I've created the VIPs (test.company.com) on the LTM's and a WIP (test.gtm.company.com) on the GTM to load balance the two VIPs.  Connection between the F5 are working as expected.  However; we have a DNS that I set the GTM as a delegation.  On our local DNS, I've created a CName to ultimately query the GTM.  For some reason, the name isn't returning back.  I've logged onto the GTM itself and tried doing a ping to its own WIP and it returns an unkown host.  I'm sure I am missing some setting somewhere.  Any help/suggestions would be appreciated.  Here's what I have already:&nbsp;
Listener (checked)When I created the WIP, the GTM automatically created the A records within Zone RunnerSOA and NS has been created for this zone

nag_54823 · Accepted Answer

did u run packet capture on the GTM. Does it receiving your dns query? Are you able to do telnet to port 53 on your listener ip ? did you get SOA or ns record as your listener ip when u do a dig or nslookup to your wideip ?

techgeeeg · Answer

HI TNY,&nbsp;
The Wideip is used for intelligent load balancing and it references the VS created in the LTM either this VS is on the same box having LTM module or on the separate. With your explanation of WIP and automatic creation of A record within Zone Runner I am not able to relate the things. Can you provide ur configuration.&nbsp;

synack_128568 · Answer

Hi tny,&nbsp;
Are the pool members up behind the GTM the is the LTM which the GTM is loadbalancing &nbsp;

tny_122436 · Answer

The pools are behind the LTM and are inherited by the GTM, hence the GTM is doing inter-datacenter load balancing.  The GTM big3d dameon is reporting the pools green.  I believe the problem is something with DNS in that the GTM doesn't query the WIP name...perhaps because maybe it's not authoritative or whatnot?&nbsp;
Configs:&nbsp;
gtm wideip /Common/test.qgtm.company.com {
    pools {
        /Common/test.company.com {
            order 0
        }&nbsp;
gtm pool /Common/test.company.com {
    alternate-mode global-availability
    fallback-ipv4 any
    fallback-mode none
    members {
        /Common/dc1ltm01q_dc1ltm02q:/Common/test_company_com-443 {
            order 0
        }
        /Common/dc2nltm01q_dc2ltm02q:/Common/test_company_com-443 {
            order 1
        }&nbsp;

laudec · Answer

You can not do a DNS query from a GTM to itself to resolve a DNS query. Do the query from another GTM device, or from a client PC rather.&nbsp;

lmc_133723 · Answer

You can not do a DNS query from a GTM to itself to resolve a DNS query. Do the query from another GTM device, or from a client PC rather.&nbsp;

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GTM doesn't seem to resolve its own WIP

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