ZyXEL Communications GS1510-16 -, User Manual

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Chapter 17 Spanning Tree Protocol
GS1510 Series User’s Guide
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17.4 General Settings
Use this screen to enable and configure the STP settings. Click Advanced
Settings > STP > General Settings to see the screen as shown.
Figure 52 General Settings
The following table describes the labels in this screen.
Table 28 General Settings
LABEL DESCRIPTION
Spanning Tree Protocol Settings
State
Select Enabled to use Spanning Tree Protocol (STP) or Rapid Spanning
Tree Protocol (RSTP).
Mode Select to use either Spanning Tree Protocol (STP) or Rapid Spanning
Tree Protocol (RSTP). See
Section 17.1 on page 95 for background
information on STP.
Bridge Parameters
Forward Time
This is the maximum time (in seconds) the Switch will wait before
changing states. This delay is required because every switch must
receive information about topology changes before it starts to forward
frames. In addition, each port needs time to listen for conflicting
information that would make it return to a blocking state; otherwise,
temporary data loops might result. The allowed range is 4 to 30
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.
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.