User Manual

M4300 Intelligent Edge Series Fully Managed Stackable Switches
Configure Switching Information User Manual226
5. To add a new MST, do the following:
a. Configure the MST values,
• MST ID. Specify the ID of the MST to create. The valid values for this are 1 to
4094. This is only visible when the select option of the MST ID select box is
selected.
• Priority.
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 gives a combo box of each VLAN on the switch. These can be
selected or unselected for re-configuring the association of VLANs to MST
instances.
b. Click the Add button
This creates the new MST that you configured.
6. T
o modify an MST instance, do the following:
a. Select the check box next to the instance.
You can select multiple check boxes to apply the same setting to all selected ports.
b. Update the values.
c. click the Apply button.
7. T
o delete an MST instance, do the following:
a. Select the check box for the instance.
b. Click the Delete button.
For each configured instance, the information described in the following table displays on the
page.
Table 79. 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 n seconds since the topology of the selected MST instance last
changed.
Topology Change Count Number of times topology changed for the selected MST instance.
Topology Change The value of the topology change parameter for the switch indicating if a
topology change is in progress on any port assigned to the selected MST
instance. It takes a value if
True or False.
Designated Root The bridge identifier of the root bridge. It is made up from the bridge priority
and the base MAC address of the bridge