Fortinet 5003 - Manual (Page 66)

FortiSwitch-5003A and 5003 Fabric and Base Backplane Communications Guide
66 01-30000-85717-20081205
Example active-active redundant link configuration FortiGate-5050 fabric backplane communication
Example active-active redundant link configuration
You can make the previous example an active-active redundant link configuration
that sends all traffic from the internal network to one FortiSwitch-5003A board and
all traffic from the external network to the other FortiSwitch-5003A board by
changing the priorities of the spanning tree instances added to the
FortiSwitch-5003A boards.
To send all traffic from the internal network to the FortiSwitch-5003A board in
slot 1 configure the spanning tree instances on this board with a lower priority
value for instance 3 which is used for VLAN 100 packets.
config switch fabric-channel stp instance
edit 3
set priority 4096
set vlan-range 100
next
edit 5
set priority 40960
set vlan-range 101
end
To send all traffic from the external network to the FortiSwitch-5003A board in slot
2 configure the spanning tree instances on this board with a lower priority value for
instance 5 which is used for VLAN 101 packets.
config switch fabric-channel stp instance
edit 3
set priority 40960
set vlan-range 100
next
edit 5
set priority 4096
set vlan-range 101
end
Verifying the spanning tree configuration of a FortiSwitch-5003A board in slot 1
To display the configuration of spanning tree instance 3 for the FortiSwitch-5003A
F5 interface enter:
diagnose spanning-tree instance fabric-channel 3 f5
MST Instance Information, Fabric-Channel:
Instance ID : 3
Mapped VLANs : 100
Switch Priority : 4096
Regional Root MAC Address : 00306407a1da
Regional Root Priority:
4096
Regional Root Path Cost: 0
Regional Root Port: slot-2/1
Remaining Hops: 20
Port Speed Cost Priority Role State
__________ ______ ________ _________ __________ __________
f5 10G 2000 128 DESIGNATED FORWARDING