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GCP VPN Tunnel is up, I can see Sent Bytes, but traffic is not reaching the recipient

it flag

I am trying to establish a VPN tunnel between a Classic CPN gateway and an on-prem VPN gateway. A requirement for the on-prem gateway is that traffic coming out of my VPN must present as a public external IP address (not a private IP address).

I am able to establish the tunnel using the public IP address of the VM. I am also able to route traffic from the VM to the Cloud VPN using a routing rule.

I can see quite a bit of "Sent Bytes", when I ping the remote server. This corresponds to when I send the PING requests.

However, no traffic is reaching the recipient.

So to summarize,

  • The tunnel is up and running
  • I can route traffic into the VPN so it shows Sent Bytes
  • Traffic is not reaching the recipient
Arden Smith avatar
pe flag
Is there any chance to share the brand and software level of the appliance on-site?
Paul avatar
it flag
@ArdenSmith - unknown, but it is some sort of Juniper device
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