Cannot set-up Mongos Router

Ops and Admin Sharding
1

Good morning,
I have a problem while setting up Mongos router.
I’m using GCP to host multiple VMs, and I have a separate VM for the mongos and configserver.
On the picture I have sent you can see that I can connect from mongos’ VM with the use of mongosh to the VM of configserver, but when I tried to run the mongos, the error “HostUnreachable” shows up:

a5addee70aae8fe77d0f6062408a60381804b0af
a5addee70aae8fe77d0f6062408a60381804b0af1484×1772 480 KB

Because the connection with mongosh works, I suppose it is not the problem of the network. What else could be the problem?

PS: Sorry for long picture, but I cannot only upload one as a new user.

2

did you check host? use nslookup and check the domain is validated.
and also you need to check port forwarding.