Re: Can not ping between local VLAN after setup Policy Route
I can't tell for sure since I almost never use policy routes, other than SD-WAN. But the first policy route LAN-Office -> WAN1 for all (0/0) must be taking away traffce to server interfaces. To test it, just disable only that policy route to see if you can ping the server.
Then if that's the case set the priority number on the default route toward WAN2 and WAN3 lower so that WAN1 has the lowest number (default=0) so that LAN-Office traffic takes that default route and remove the first policy route.
Policy routes are sticky. Regardless the interface is up or down, they're always evaluated before looking up the routing table. Then if the destination is "all" 0/0, it would take all traffic away. I think SD-WAN's rules (=policy routes) works a little differently thus always works better for most situations.