ZyXEL GS1510-24 User Guide - Page 97
Table 28
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Chapter 17 Spanning Tree Protocol 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. GS1510 Series User's Guide 97