SD-WAN tunnels not established between branches

[benjemaa]

hey guys I am creating a full mesh SD-WAN between 4 PA FWs (1 Hub and 3 branches).

each FWs has 3 interfaces (1 LAN, ISP1, ISP2).

the tunnels between the Hub and branches are ok, between branches on ISP 2 are ok too but the tunnels between branches on ISP1 are failing.

Interface ETH1/1 on zone LAN (i created it)

Interface 1/2 on zone outside (i created it)

interface 1/3 on zone outside (i created it)

i checked ping connectivity between branches on ISP1 its failing, so I removed the branches from the SD-WAN gave them dummy IPs in the same network of ISP1 now the ping is ok. i also added a rule to permit any traffic so i don't have any problems.

just a note, when creating the VPN cluster the eth1/2 on my hub zone changes from outside to zone-to-branch automatically

sorry for posting this here but i can't find a PAN-OS SD-WAN discussion board