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

00306407a1da

Regional Root MAC Address :

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

 

FortiSwitch-5003A and 5003 Fabric and Base Backplane Communications Guide

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01-30000-85717-20081205

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Fortinet 5003A manual Example active-active redundant link configuration

5003, 5003A specifications

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