Chapter 13 Spanning Tree Protocol
GS1920 Series User’s Guide
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13.9 Multiple Spanning Tree Port Configuration
Click Advanced Application > Spanning Tree Protocol > MSTP > Port in the navigation panel
to display the status screen as shown next. See Section on page 110 for more information on
MSTP.
Figure 90 Advanced Application > Spanning Tree Protocol > MSTP > Port
Active Select this check box to add this port to the MST instance.
Priority Configure the priority for each port here.
Priority decides which port should be disabled when more than one port forms a loop in a
switch. Ports with a higher priority numeric value are disabled first. The allowed range is
between 0 and 255 and the default value is 128.
Path Cost Path cost is the cost of transmitting a frame on to a LAN through that port. It is
recommended to assign this value according to the speed of the bridge. The slower the
media, the higher the cost-see Table 38 on page 109 for more information.
Add Click Add to save this MST instance to the Switch’s run-time memory. The Switch loses
this change if it is turned off or loses power, so use the Save link on the top navigation
panel to save your changes to the non-volatile memory when you are done configuring.
Cancel Click Cancel to begin configuring this screen afresh.
Instance This field displays the ID of an MST instance.
VLAN This field displays the VID (or VID ranges) to which the MST instance is mapped.
Active Port This field display the ports configured to participate in the MST instance.
Delete Check the rule(s) that you want to remove in the Delete column and then click the
Delete button.
Cancel Click Cancel to begin configuring this screen afresh.
Table 45 Advanced Application > Spanning Tree Protocol > MSTP (continued)
LABEL DESCRIPTION
