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I have 2 Palo Alto Firewalls each connecting to Peplink Balance 310x routers. HA is configured between the two Balance 310x routers. What I am trying to achieve is communication between these 2 routers via the 2 FWs. The HA (VRRP) interface is in the untagged VLAN on the router. It is Layer 2 between the routers and FW's. I have the FW interfaces with an untagged interface ready to pass this traffic between them but this is not working.
See quick drawing above. I need to be able to pass the VRRP packets from the Peplink Balances via the 2 Palo Alto FW's. Is this possible using this design? I do not see any untagged traffic traversing the Palo's.
Please see the articles below as palo alto can be anabled to accept untagged traffic and Vlan 0 is considered untagged:
For layer 3:
If you want interface layer 2 communication (not vwire) between the firewalls you may need to check if you can tag the native vlan on the routers before being send to palo alto:
I have already deployed (many times) such kind (almost) of configuration (PA L3 mode + Pelink in front in our case) but we uses a L2 switch (two in fact to provide HA) between the external interface of the PA and internal interface of the Peplink... If you use L2 mode (VWIRE) on PA interface, just be careful with Spanning-Tree..
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