communication of vlan interfaces not working

AdamHP — Thu, 20 Apr 2023 15:02:49 GMT

Hello,

I have two firewalls connected over "L2 Line" from our ISP.

We would like to use this line to route between our two sites instead of IPSec tunnel.
On this line I can use vlans from 1-100 for communication.

On both firewalls I created L2 interface with tagged sub-interface from this range.

Then I created vlan interface with IP address and same tag as the L2 sub-interface.

L2 sub-interface and vlan interface are in the same vlan.

On both firewalls vlan interface has Management profile set for this IP address range and ping allowed.

No policy is blocking this traffic on both firewalls(confirmed by Traffic monitor)

When I tried ping with selecting source IP to be the vlan interface and host the opposite vlan interface on the second firewall, ping is not working.

Can you point me if I am missing something in this config or what else to check? I would like to be sure that I did all I can before I will go to ISP with assumption that maybe the L2 line is not working as expected.

Thank you for help

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communication of vlan interfaces not working