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‧ 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 Figure 4-7-4 appears.
Figure 4-7-4: STP Bridge Configuration Page Screenshot
The Page includes the following fields:
Basic Settings
Object Description
Protocol Version
The STP protocol version setting. Valid values are:
STP (IEEE 802.1D Spanning Tree Protocol)
RSTP (IEEE 802.2w Rapid Spanning Tree Protocol)
MSTP (IEEE 802.1s Multiple Spanning Tree Protocol)
Bridge Priority
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.
Forward Delay
The delay used by STP Bridges to transition Root and Designated Ports to
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