ZyXEL XGS4700-48F User Guide - Page 158

Chapter 13 Spanning Tree Protocol Table 29 Advanced Application > Spanning Tree Protocol > RSTP (continued) LABEL DESCRIPTION Active Select this check box to activate RSTP on this port. Edge Select this check box to configure a port as an edge port when it is directly attached to a computer. An edge port changes its initial STP port state from blocking state to forwarding state immediately without going through listening and learning states right after the port is configured as an edge port or when its link status changes. Priority Path Cost Apply Cancel Note: An edge port becomes a non-edge port as soon as it receives a Bridge Protocol Data Unit (BPDU). 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 26 on page 150 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 nonvolatile memory when you are done configuring. Click Cancel to begin configuring this screen afresh. 13.5 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 13.1 on page 149 for more information on RSTP. 158 XGS4700-48F User's Guide