Multiple Rapid Spanning Tree Protocol Status - ZyXEL Communications XS3800-28 User Manual

Table 60 Advanced Application > Spanning Tree Protocol > MRSTP (continued)
LABEL
Root Guard
Priority
Path Cost
Tree
Apply
Cancel

13.7 Multiple Rapid Spanning Tree Protocol Status

Click Advanced Application > Spanning Tree Protocol in the navigation panel to display the status
screen as shown next. See
Note: This screen is only available after you activate MRSTP on the Switch.
Figure 126 Advanced Application > Spanning Tree Protocol > Status: MRSTP (Standalone Mode)
Chapter 13 Spanning Tree Protocol
DESCRIPTION
Select this check box to enable root guard on this port in order to prevent the switch(es)
attached to the port from becoming the root bridge.
With root guard enabled, a port is blocked when the Switch receives a superior BPDU on it. The
Switch allows traffic to pass through this port again when the switch connected to the port
stops to send superior BPDUs.
Configure the priority for each port here.
Priority decides which port should be disabled when more than one port forms a loop in the
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 is the cost of transmitting a frame on to a LAN through that port. It is recommended
that you assign this value according to the speed of the bridge. The slower the media, the
higher the cost - see Table 55 on page 153
Select which STP tree configuration this port should participate in.
Click Apply to save your changes to the Switch's run-time memory. The Switch loses these
changes 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.
Click Cancel to begin configuring this screen afresh.
Section 13.10 on page 175
XS3800-28 User's Guide
163
for more information.
for more information on MRSTP.