Инструкция для ZYXEL GS1920-48

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Chapter 13 Spanning Tree Protocol

GS1920 Series User’s Guide

125

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 114 for more information on
MSTP.

Figure 95

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 42 on page 113 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.