networking - Azure VMs doesn't ping -

networking - Azure VMs doesn't ping -

i'm facing unusual problem in azure, i'm having 3 vms (domain controller, application server , database server). i've joined 2 servers correctly domain controller.

after while discovered i'm not able ping 1 o servers (db server) other servers. reply destination host unreachable , connection time out.

the other 2 servers working fine between each other not 3rd one.

to investigate tried 1. shutdown firewall on 3 machines. no luck 2. enable ping rule in firewall. no luck 3. i'm not able telnet server rdp port of these servers, while i'm able other 2 servers. 4. tried nslookup command see if can communicate dns server or not. fails time out

keeping in mind 1. 3 virtual machines in same virtual network , same sub-net. 2. i'v added dns server dns servers in azure portal.

any help ?!

sounds perhaps have machine that's no registered dns server. should able check doing nslookup -all details on machine's dns settings. create sure resolving proper dns machine.

networking azure dns virtual-machine windows-server-2012-r2