Fortinet 548B - Manual (Page 211)

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Syntax
spanning-tree configuration revision <0-65535>
no spanning-tree configuration revision
<value> - Revision Level is a number in the range of 0 to 65535.
no - This command sets the Configuration Identifier Revision Level for use in identifying the
configuration that this switch is currently using to the default value, that is, 0.
Default Setting
0
Command Mode
Global Config
7.4.2.4 spanning-tree mode
This command sets the Force Protocol Version parameter to a new value. The Force Protocol Version
can be one of the following:
1. stp - ST BPDUs are transmitted rather than MST BPDUs (IEEE 802.1d functionality supported)
2. rstp - RST BPDUs are transmitted rather than MST BPDUs (IEEE 802.1w functionality
supported)
3. mstp - MST BPDUs are transmitted (IEEE 802.1s functionality supported)
Syntax
spanning-tree mode {stp | rstp | mstp}
no spanning-tree mode
no - This command sets the Force Protocol Version parameter to the default value, that is, mstp.
Default Setting
mstp
Command Mode
Global Config
7.4.2.5 spanning-tree forward-time
This command sets the Bridge Forward Delay parameter to a new value for the common and internal
spanning tree. The forward-time value is in seconds within a range of 4 to 30, with the value being
greater than or equal to "(Bridge Max Age / 2) + 1".