In this user interface, you can query the current values of some parameters for spanning tree ports.
In the NE Explorer, click a board and select from the Function Tree. Click the Port Running Information tab.
Field |
Value |
Description |
|---|---|---|
Port |
For example: 1 |
Displays port. |
| Port ID | For example: 1 |
The Port ID parameter contains 16 bits, which show the port priority and the unique port number in the bridge. The first eight bits indicate the port priority, and the later eight bits indicate the port number. The port ID represents the priority in the spanning tree. If the value of the port ID is smaller, the port priority in the bridge is higher. To enable the RSTP to be compatible with the STP, the port priority is represented by eight bits, of which the later four bits are 0 for easy management. |
Port Status |
Blocking, Listening, Learning, Forwarding, Disable, Discarding |
Displays port status. |
| Port Path Cost | Values of parameters vary with different boards and products. For details, click the links in the Description column. | The Port Path Cost parameter is used for computation of the spanning tree state machine. Based on the port path cost, you can compute the root path cost at the port of the switch. Each bridge has a root path cost, namely, the cost of the path from the root bridge to the local bridge. The path cost of each port can be set through the management module. For a root bridge, the root path cost is 0. |
Designated Port ID |
For example: 1 |
Displays the designated port ID. |
Designated Root Bridge Priority |
0 to 61440 |
Displays the designated root bridge priority. |
Designated Root Bridge MAC Address |
00-00-00-00-00-00 to FE-FF-FF-FF-FF-FF The first digit is an even number |
Displays the designated root bridge MAC address. |
Designated Path Cost |
0 - 61440 |
Displays the designated path cost. |
Designated Bridge Priority |
0 - 61440 |
Displays the designated bridge priority |
Designated Bridge MAC Address |
00-00-00-00-00-00 to FE-FF-FF-FF-FF-FF The first digit is an even number |
Displays designated bridge MAC address. |
Topology Detection |
Enabled, Disabled |
Sets whether the port tests topology change. |
Edge Port Status |
Enabled, Disabled |
Displays the enable status of edge port. |
Running Time (s) |
For example: 0 |
Displays running time. |