H3C S7500 Series Operation Manual
Also see for S7500 Series: Operation manualOperation manualOperation manualOperation manualCommand manual
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Contents
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Operation Manual – MSTPH3C S7500 Series Ethernet Switches Chapter 1 MSTP Configuration1-38Some other vendors' switches adopt proprietary spanning tree protocols that are similarto RSTP in the way to implement rapid transition on designated ports. When a switch ofthis kind operating as the upstream switch connects with the H3C series switch runningMSTP, the upstream designated port fails to change their states rapidly.The rapid transition function is developed to resolve this problem. When a H3C seriesswitch running MSTP is connected ins the upstream direction to another vendor'sswitch running a proprietary spanning tree protocol, you can enable the rapid transitionfunction on the ports of the H3C series switch operating as the downstream switch.Among these ports, those operating as the root ports will then send agreement packetsto their upstream ports after they receive proposal packets from the upstreamdesignated ports, instead of waiting for agreement packets from the upstream switch.This enables designated ports of the upstream switch to change their states rapidly.1.7.2 Rapid Transition ConfigurationI. Configuration prerequisitesAs shown in Figure 1-5, a H3C series switch is connected to another vendor's switch.The former operates as the downstream switch, and the latter operates as theupstream switch. The network operates normally.The upstream switch is running a proprietary spanning tree protocol that is similar toRSTP in the way to implement rapid transition on designated ports. Port 1 is adesignated port.The downstream switch is running MSTP. Port 2 is the root port.Device AThird-party devicePort 1Port 2nFigure 1-5 Network diagram for rapid transition configuratioII. Configuration procedure1) Configure the rapid transition function in system view.Follow these steps to configure the rapid transition function in system view: |
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