User Manual

24-Port Gigabit (Hi-Power) PoE+ Ethernet Smart Managed Pro Switch with 2 SFP Ports
Configure Switching User Manual171
7. Configure the MST values:
• MST ID. Specify the
ID of the MST to create. The valid values for this are 1 to 64. This
is visible only when the select option of the MST ID select box is selected. The switch
supports up to four instances.
• 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 you set the priority to any
value between 0 and 4095, the switch automatically sets the value to 0. The default is
32768. The valid range is 0–61440.
• VLAN ID
The menu includes all VLANs that are configured on the switch.
You can
select VLANs that must be associated with the MST instance or clear VLANs that are
already associated with the MST instance.
8. Click the Add button.
The MST is added.
The following table describes the nonconfigurable information on the page.
Table 31. 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.
Last TCN The time in the format day:hour:minute:second since the topology of the selected
MST instance last changed.
Topology Change Count Number of times that the topology changed for the selected MST instance.
Topology Change The value of the topology change settings for the switch, indicating if a topology
change
is in
progress on any port assigned to the selected MST instance. It is either
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
Root Path Cost The path cost to the designated root for this MST instance.
Root Port The port to access the designated root for this MST instance.
Modify an MST instance
To modify an MST instance:
1. Connect your computer
to the same network as the switch.
You can use a WiFi or wired connection to connect your computer to the network, or
connect directly to a switch that is off-network using an Ethernet cable.
2. Launch
a web browser.
3. In the address field of your web browser, enter the IP address of the switch.