PLANET WGSW-5242 - Manual (Page 76)

User’s Manual of WGSW-5242
76
The page includes the following fields:
Object Description
• Port Indicates the port numbers of the system.
• Participate Indicates if the port is runung RSTP protocol or not.
• Cost Indicates the cost of this port, which means the contribution of this port to the
path cost of paths towards the spanning tree root which include this port.
• Priority Indicates the priority of this port. This is the value of the priority field contained in
the first octect of the Port ID.
• Edge Indicates if this port is the edge port. Once configured as an edge port, the port
state immediately transitions from disable/block to forwarding state.
• Root Guard Indicates if this port is the root guard port. Once configured as a root guard port,
the port can prevent outside swit Displays the RSTP port status.ch with suprior
BID from affecting former topology.
•
P2P
Indicates if this port is a point-to-point link. If you connect a port to another port
though a point-to-point link and the local port becomes a designated port, it
negotiates a rapid transition with the other port to ensure a loop-free topology.
•
Status
Displays the RSTP port status.
•
Role
Displays the role of this RSTP port.
• Edit RSTP Port
Property
Click on this button to allow you to configure RSTP port properties.
4.5.3 MSTP
The Multiple Spanning Tree Protocol (MSTP) algorithm and protocol provides simple and full connectivity for frames assigned
to any given VLAN throughout a Bridged Local Area Network comprising arbitrarily interconnected Bridges, each operating
MSTP, STP (Clause 8 of IEEE Std 802.1D, 1998 Edition), or RSTP (Clause 17 of IEEE Std 802.1D,1998 Edition).
MSTP allows frames assigned to different VLANs to follow separate paths, each based on an independent Multiple Spanning
Tree Instance (MSTI)
, within Multiple Spanning Tree (MST) Regions composed of LANs and or MST Bridges. These Regions
and the other Bridges and LANs are connected into a single Common Spanning Tree (CST).