User Manual

Configure Switching Information
157
M4100 Series Managed Switch
6. Click the Login button.
The web management interface menu displays.
7. Select Switching > STP >
Advanced  MST Configuration.
8. To add an MST instance, configure the MST values and click the ADD button:
• MST ID. Specify the ID of the MST to create. V
alid values for this are between 1 and
4094.
• Priority. Specifiy the bridge priority value for the MST
. When switches or bridges are
running STP, each is assigned a priority. After exchanging BPDUs, the switch with the
lowest priority value becomes the root bridge. The bridge priority is a multiple of 4096.
If you specify a priority that is not a multiple of 4096, the priority is automatically set to
the next lowest priority that is a multiple of 4096. For example, if the priority is
attempted to be set to any value between 0 and 4095, it is set to 0. The default priority
is 32768.The valid range is 0–61440.
• VLAN ID.
This is a combo box of each VLAN on the switch. These can be selected or
unselected for reconfiguring the association of VLANs to MST instances.
9. T
o delete an MST instance, select the check box next to the instance and click the DELETE
button.
10. T
o modify an MST instance, select the check box next to the instance to configure, update
the values, and click the APPLY button.
You can select multiple check boxes to apply the same setting to all selected ports.
11. Click CANCEL to cancel the configuration on the screen and reset the data on the screen to
the previous values of the switch.
For each configured instance, the information described in the following table displays on the
screen.
Table 47. MST Configuration
Field Description
Bridge Identifier The bridge identifier for the selected MST instance. It is made up using
the bridge priority and the base MAC address of the bridge.
Time Since Topology Change The time, in seconds since the topology of the selected MST instance
last changed.
Topology Change Count Number of times topology has changed for the selected MST instance.