ZyXEL XGS4700-48F User Guide - Page 159

Chapter 13 Spanning Tree Protocol Note: This screen is only available after you activate RSTP on the Switch. Figure 69 Advanced Application > Spanning Tree Protocol > Status: RSTP The following table describes the labels in this screen. Table 30 Advanced Application > Spanning Tree Protocol > Status: RSTP LABEL DESCRIPTION Configuration Click Configuration to specify which STP mode you want to activate. Click RSTP to edit RSTP settings on the Switch. Bridge Root refers to the base of the spanning tree (the root bridge). Our Bridge is this Switch. This Switch may also be the root bridge. Bridge ID This is the unique identifier for this bridge, consisting of the bridge priority plus the MAC address. This ID is the same for Root and Our Bridge if the Switch is the root switch. Hello Time (second) This is the time interval (in seconds) at which the root switch transmits a configuration message. The root bridge determines Hello Time, Max Age and Forwarding Delay. Max Age (second) This is the maximum time (in seconds) a switch can wait without receiving a configuration message before attempting to reconfigure. Forwarding Delay (second) This is the time (in seconds) the root switch will wait before changing states (that is, listening to learning to forwarding). See Section 13.1.3 on page 151 for information on port states. Cost to Bridge Port ID Topology Changed Times Time Since Last Change Note: The listening state does not exist in RSTP. This is the path cost from the root port on this Switch to the root switch. This is the priority and number of the port on the Switch through which this Switch must communicate with the root of the Spanning Tree. This is the number of times the spanning tree has been reconfigured. This is the time since the spanning tree was last reconfigured. XGS4700-48F User's Guide 159