Planet MGSW-28240F User Manual page 161

‧ Extension – Multiple Spanning Tree Protocol (MSTP) : Defines an extension to RSTP to further develop the
usefulness of virtual LANs (VLANs). This "Per-VLAN" Multiple Spanning Tree Protocol configures a separate
Spanning Tree for each VLAN group and blocks all but one of the possible alternate paths within each Spanning
Tree.
The STP System Configuration screen in
The page includes the following fields:
Basic Settings
Object
•
Protocol Version
• Bridge Priority
•
Forward Delay
Figure 4-7-4 appears.
Figure 4-7-4: STP Bridge Configuration Page Screenshot
Description
The STP protocol version setting. Valid values are STP, RSTP and MSTP.
Controls the bridge priority. Lower numeric values have better priority. The bridge
priority plus the MSTI instance number, concatenated with the 6-byte MAC
address of the switch forms a Bridge Identifier.
For MSTP operation, this is the priority of the CIST. Otherwise, this is the priority
of the STP/RSTP bridge.
The delay used by STP Bridges to transition Root and Designated Ports to
Forwarding (used in STP compatible mode). Valid values are in the range 4 to 30
seconds
-Default: 15
-Minimum: The higher of 4 or [(Max. Message Age / 2) + 1]
-Maximum: 30
User's Manual of MGSW-28240F
161