Figure 3-82 Displaying Spanning Tree Information - Edge-Core ES3510 Management Manual

• Root Forward Delay – The maximum time (in seconds) this device will wait before
changing states (i.e., discarding to learning to forwarding). This delay is required
because every device must receive information about topology changes before it
starts to forward frames. In addition, each port needs time to listen for conflicting
information that would make it return to a discarding state; otherwise, temporary
data loops might result.
• Transmission limit – The minimum interval between the transmission of
consecutive RSTP/MSTP BPDUs.
• Path Cost Method – The path cost is used to determine the best path between
devices. The path cost method is used to determine the range of values that can
be assigned to each interface.
Web – Click Spanning Tree, STA, Information.
CLI – This command displays global STA settings, followed by settings for each port.
Console#show spanning-tree
Spanning-tree information
---------------------------------------------------------------
Spanning tree mode:
Spanning tree enabled/disabled:
Priority:
Bridge Hello Time (sec.):
Bridge Max Age (sec.):
Bridge Forward Delay (sec.):
Root Hello Time (sec.):
Root Max Age (sec.):
Root Forward Delay (sec.):
Designated Root:
Current root port:
Current root cost:
Number of topology changes:
Last topology changes time (sec.):2262
Transmission limit:
Path Cost Method:
.
.
.
Note:
The current root port and current root cost display as zero when this device is not
connected to the network.

Figure 3-82 Displaying Spanning Tree Information

Spanning Tree Algorithm Configuration
RSTP
enabled
32768
2
20
15
2
20
15
32768.0012CF0B0D00
0
0
1
3
long
3
4-216
3-127