Ping Issue

Question

We were attempting to ping the server, but it was not working initially. However, after changing the NIC, it started working.

We would like to understand the issue and how to fix in existing NIC

Answer 1

Follow https://learn.microsoft.com/en-us/azure/virtual-network/troubleshoot-vm-connectivity

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hth

Marcin

Answer 2

Hello Akash Kumar Mandal

Greetings!

You can check by creating a new test VM and associate the non-working NIC to it then try to do ping from the existing server by disabling the windows defender firewall.

• If ICMP ping is not working, please initiate a TCP ping.
• I could suggest you restart you're existing VM on non-working hours and check the ping test, if possible, share us the ping result.

Check the below document: https://learn.microsoft.com/en-us/azure/virtual-network/troubleshoot-vm-connectivity#step-1-check-whether-the-network-adapter-is-in-a-failed-state

Answer 3

Hi, try check if the old nic is assigned the right ip, subnet, and isn’t blocked by NSG rules. After all, test the config try to compare the old nic’s settings with the new one. If something’s off, tweak it. Sometimes just restarting the vm or detaching/reattaching the nic can fix it. If all else fails, hit up Azure support. They can dig into the backend and figure out why the old nic was acting up.

May be the old nic was probably misconfigured, blocked, or just busted. Swap it out, check the settings, or get azure support to sort it out. Easy peasy.

rgds,

Alex