TP-Link TL-SG5426 User Guide - Page 387
spanning-tree forward-time, Example, Syntax, spanning-tree, forward-time, Default Setting
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4 Command Line Interface members may be inadvertently disabled to prevent network loops, thus isolating group members. When operating multiple VLANs, we recommend selecting the MSTP option. • Rapid Spanning Tree Protocol RSTP supports connections to either STP or RSTP nodes by monitoring the incoming protocol messages and dynamically adjusting the type of protocol messages the RSTP node transmits, as described below: - STP Mode - If the switch receives an 802.1D BPDU after a port's migration delay timer expires, the switch assumes it is connected to an 802.1D bridge and starts using only 802.1D BPDUs. - RSTP Mode - If RSTP is using 802.1D BPDUs on a port and receives an RSTP BPDU after the migration delay expires, RSTP restarts the migration delay timer and begins using RSTP BPDUs on that port. • Multiple Spanning Tree Protocol - To allow multiple spanning trees to operate over the network, you must configure a related set of bridges with the same MSTP configuration, allowing them to participate in a specific set of spanning tree instances. - A spanning tree instance can exist only on bridges that have compatible VLAN instance assignments. - Be careful when switching between spanning tree modes. Changing modes stops all spanning-tree instances for the previous mode and restarts the system in the new mode, temporarily disrupting user traffic. Example The following example configures the switch to use Rapid Spanning Tree: Console(config)#spanning-tree mode rstp Console(config)# spanning-tree forward-time This command configures the spanning tree bridge forward time globally for this switch. Use the no form to restore the default. Syntax spanning-tree forward-time seconds no spanning-tree forward-time seconds - Time in seconds. (Range: 4 - 30 seconds) The minimum value is the higher of 4 or [(max-age / 2) + 1]. Default Setting 15 seconds Command Mode Global Configuration 4-146