Fortinet 5003 Benutzerhandbuch

Use this command to add and configure 802.1s Multi-Spanning Tree Protocol (MSTP) spanning tree 
instances. A spanning tree instance consists of the following:

• An instance ID
• A priority value
• A VLAN range
• A cost and priority value for each FortiSwitch-5003A interface (configured with the 

 command).

config switch fabric-channel stp instance

end

end

edit <instance_id>

Enter a numeric spanning tree instance number in the range 0 

to 15. All devices participating in an MSTP region must have 

the same spanning tree instances.
The default configuration includes spanning tree instance 0 that 

has a <priority_value> of 32768 and does not include a 

vlan-range setting. The stp-port configuration of spanning 

tree instance 0 sets the cost of all FortiSwitch-5003A interfaces 

to 0 and the priority of all interfaces to 128.

priority <priority_value> The priority value of the FortiSwitch-5003A spanning tree 

instance. 
MSTP regions include multiple devices with the same spanning 

tree instances. The different priority values of the same 

instances on different devices determines how spanning tree 

routes packets to the different devices. The device with the 

spanning tree instance with the lowest priority value is more 

likely to be the root device and to process all packets.
The <priority_value> range is 0 to 61440 in increments of 

4096. Valid priority values are: 0, 4096, 8192, 12288, 16384, 

20480, 24576, 28672, 32768, 36864, 40960, 45056, 49152, 

53248, 57344, and 61440. 

32768

vlan-range <id_numbers>

Specify the IEEE 802.1Q VLAN IDs that can be added to 

VLAN-tagged packets that this spanning tree instance can 

receive and transmit. Only packets with these VLAN IDs are 

affected by this spanning tree instance.
You can enter any combination of single VLAN IDs and ranges 

of VLAN IDs. Use a hyphen to specify ranges. Separate each 

single ID or range with a comma. Do not include spaces. For 

example: 1,3-4,6,7,9-100.

No default.