Configure Multiple Rapid Spanning Tree Protocol - ZyXEL Communications 43222612 User Manual

13.8 Configure Multiple Rapid Spanning Tree Protocol

To configure MRSTP, click MRSTP in the Advanced Application > Spanning Tree Protocol screen.
Figure 139 Advanced Application > Spanning Tree Protocol > MRSTP
The following table describes the labels in this screen.
Table 71 Advanced Application > Spanning Tree Protocol > MRSTP
LABEL
Status
Tree
Active
Bridge Priority
Hello Time
Max Age
Chapter 13 Spanning Tree Protocol
DESCRIPTION
Click Status to display the MRSTP Status screen.
This is a read only index number of the STP trees.
Select this check box to activate an STP tree. Clear this check box to disable an STP tree.
Note: You must also activate Multiple Rapid Spanning Tree in the Advanced
Application > Spanning Tree Protocol > Configuration screen to enable MRSTP
on the Switch.
Bridge priority is used in determining the root switch, root port and designated port. The switch
with the highest priority (lowest numeric value) becomes the STP root switch. If all switches
have the same priority, the switch with the lowest MAC address will then become the root
switch. Select a value from the drop-down list box.
The lower the numeric value you assign, the higher the priority for this bridge.
Bridge Priority determines the root bridge, which in turn determines Hello Time, Max Age and
Forwarding Delay.
This is the time interval in seconds between BPDU (Bridge Protocol Data Units) configuration
message generations by the root switch. The allowed range is 1 to 10 seconds.
This is the maximum time (in seconds) the Switch can wait without receiving a BPDU before
attempting to reconfigure. All Switch ports (except for designated ports) should receive BPDUs
at regular intervals. Any port that ages out STP information (provided in the last BPDU)
becomes the designated port for the attached LAN. If it is a root port, a new root port is
selected from among the Switch ports attached to the network. The allowed range is 6 to 40
seconds.
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