Comtrol ROCKETLINX ES8509-XT User Manual page 82

Configuration Using the Web Interface
MSTP Information Page
Instance ID
Root Information
Root Address
Root Priority
Root Port
Root Path Cost
Max Age
Hello Time
Forward Delay
Port Information
Port Role
Port State
Path Cost
Port Priority
Link Type
Edge Port
Reload
82 - MSTP Information
Select an instance ID to display MSTP instance information. Instance 0 (CIST,
Common Internal Spanning Tree) is a special instance of spanning-tree
known as IST or Internal Spanning Tree (=MSTI00).
Root bridge address, which is the bridge with the smallest (lowest) bridge ID.
Root bridge priority, the bridge with the lowest value has the highest priority
and is selected as the root.
Root port of this bridge.
Root path cost.
The number of seconds a bridge waits without receiving Spanning-Tree
Protocol configuration messages before attempting to reconfigure.
The number of seconds between the transmissions of Spanning-Tree Protocol
configuration messages.
The number of seconds a port waits before changing from its Spanning-Tree
Protocol learning and listening states to the forwarding state.
Descriptive information about the MSTP switch port role. Role: Master, Root,
Designated, Alternate, Backup, Boundary, Disabled, Unknown.
Descriptive information about the MSTP switch port state. State: Blocking,
Listening, Learning, Forwarding, Disabled, Unknown.
The cost of the path to the other bridge from this transmitting bridge at the
specified port. Path cost range is 1 through 200000000.
Decide which port should be blocked by priority in your LAN. The range is 0
through 240 in increments of 16.
Operational link type. Some of the rapid state transactions that are possible
within MSTP are dependent upon whether the port in question can be
concerned to exactly one other bridge (that is, it is served by a point-to-point
LAN segment), or can be connected to two or more bridges (that is, it is served
by a shared medium LAN segment).
Operational edge port state. Present in implementations that support the
identification of edge ports. All ports directly connected to end stations cannot
create bridging loops in the network and can thus directly transition to
forwarding, skipping the listening and learning stages. When the non-bridge
device connects an edge port, this port is in blocking state and turn to
forwarding state in 2*Hello Time seconds. When the bridge device connects an
edge port, this port is a non-edge port automatic.
Click the Reload button to reload MSTP instance information.
RocketLinx ES8509-XT User Guide: 2000557 Rev. D