Backup job failed with fortinet appliance

[Silver]

Dear All,

Anyone can help please. 

We are  experiencing timeouts from our Backup Exec server which resides on vlan x. When backing up servers on the vlan y, several backup jobs are failing due to timeout. The policies allow traffic on all  services in both directions between these vlan's. As a test, we moved the Backup Server to same vlan x and all previously failed backups were completed successfully. 

Thanks

[Dave_Hall]

Maybe increase the session-ttl on the policies between the two vlans:

config firewall policy
  edit <index_int>
      set session-ttl <session_time_int>
  next
end

If still getting timeouts, maybe try sniffing the traffic...

diag debug reset
diag debug flow filter addr <IP address>
diag debug flow filter proto 6
diag debug flow show console enable
diag debug flow trace start 3000
diag debug en

 Edit: Create a separate fw policy from vlan y to vlan x with dest address set to the back up server (on vlan x) with that session-ttl set.

[Silver]

Any feedback plz on this issues!