ZyXEL VES1724-56B2 User Guide - Page 166

Con Rapid Spanning Tree Protocol

Page 166 highlights

Chapter 14 Spanning Tree Protocol 14.4 Configure Rapid Spanning Tree Protocol Use this screen to configure RSTP settings, see Section 14.1 on page 160 for more information on RSTP. Click RSTP in the Advanced Application > Spanning Tree Protocol screen. Figure 99 Advanced Application > Spanning Tree Protocol > RSTP The following table describes the labels in this screen. Table 64 Advanced Application > Spanning Tree Protocol > RSTP LABEL Status Active DESCRIPTION Click Status to display the RSTP Status screen (see Figure 100 on page 167). Select this check box to activate RSTP. Clear this checkbox to disable RSTP. Bridge Priority Hello Time Max Age Note: You must also activate Rapid Spanning Tree in the Advanced Application > Spanning Tree Protocol > Configuration screen to enable RSTP 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. 166 VES1724-56 User's Guide

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Chapter 14 Spanning Tree Protocol
VES1724-56 User’s Guide
166
14.4
Configure Rapid Spanning Tree Protocol
Use this screen to configure RSTP settings, see
Section 14.1 on page 160
for more information on
RSTP. Click
RSTP
in the
Advanced Application
>
Spanning Tree Protocol
screen.
Figure 99
Advanced Application > Spanning Tree Protocol > RSTP
The following table describes the labels in this screen.
Table 64
Advanced Application > Spanning Tree Protocol > RSTP
LABEL
DESCRIPTION
Status
Click
Status
to display the
RSTP
Status
screen (see
Figure 100 on page 167
).
Active
Select this check box to activate RSTP. Clear this checkbox to disable RSTP.
Note: You must also activate
Rapid Spanning Tree
in the
Advanced Application >
Spanning Tree Protocol > Configuration
screen to enable RSTP on the Switch.
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.