ZyXEL Communications GS1920v2 Series User Manual page 275

Figure 194 SWITCHING > Spanning Tree Protocol > RSTP
The following table describes the labels in this screen.
Table 145 SWITCHING > Spanning Tree Protocol > RSTP
LABEL DESCRIPTION
Active Enable the switch button to activate RSTP. Disable the switch to disable RSTP.
Note: You must also activate Rapid Spanning Tree (RSTP) in the SWITCHING >
Bridge Priority 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.
Hello Time 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.
Max Age 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.
Chapter 46 Spanning Tree Protocol
Spanning Tree Protocol > Spanning Tree Setup screen to enable RSTP on the
Switch.
GS1920v2 Series User's Guide
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