ZyXEL VES1724-56 User Guide - Page 167
Rapid Spanning Tree Protocol Status
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Chapter 14 Spanning Tree Protocol Table 58 Advanced Application > Spanning Tree Protocol > RSTP (continued) LABEL DESCRIPTION Forwarding Delay 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. As a general rule: Note: 2 * (Forward Delay - 1) >= Max Age >= 2 * (Hello Time + 1) Port This field displays the port number. * Settings in this row apply to all ports. Use this row only if you want to make some settings the same for all ports. Use this row first to set the common settings and then make adjustments on a port-by-port basis. Active Priority Path Cost Apply Cancel Note: Changes in this row are copied to all the ports as soon as you make them. Select this check box to activate RSTP on this port. Configure the priority for each port here. Priority decides which port should be disabled when more than one port forms a loop in a switch. Ports with a higher priority numeric value are disabled first. The allowed range is between 0 and 255 and the default value is 128. Path cost is the cost of transmitting a frame on to a LAN through that port. It is recommended to assign this value according to the speed of the bridge. The slower the media, the higher the cost-see Table 55 on page 160 for more information. Click Apply to save your changes to the Switch's run-time memory. The Switch loses these changes if it is turned off or loses power, so use the Save link on the top navigation panel to save your changes to the non-volatile memory when you are done configuring. Click Cancel to begin configuring this screen afresh. 14.5 Rapid Spanning Tree Protocol Status Click Advanced Application > Spanning Tree Protocol in the navigation panel to display the status screen as shown next. See Section 14.1 on page 160 for more information on RSTP. Note: This screen is only available after you activate RSTP on the Switch. Figure 94 Advanced Application > Spanning Tree Protocol > Status: RSTP VES1724-56 User's Guide 167