zrd and named went down while running gtm_add (gtm self ip address)

Hi all.

 

I have configured GTM lab on the machine. I have configured 2 DNS server and 2 LTM in my lab. when i ran bigip_add of LTM server, DNS and LTM successfully exchange certificates. But when i ran gtm_add of 2nd DNS, then nemed and zrd went to downstate. I am unable to troubleshoot this. Please suggest what to do ??

 

Thanks