Operation Manual – MSTPH3C S5600 Series Ethernet Switches Table of Contentsii1.6 Configuring Guard Functions........................................................................................... 1-431.6.1 Introduction............................................................................................................ 1-431.6.2 Configuration Prerequisites................................................................................... 1-451.6.3 Configuring BPDU Guard...................................................................................... 1-451.6.4 Configuring Root Guard ........................................................................................ 1-451.6.5 Configuring Loop Guard........................................................................................ 1-461.6.6 Configuring TC-BPDU Attack Guard..................................................................... 1-471.6.7 Configuring BPDU Dropping ................................................................................. 1-471.7 Configuring Digest Snooping ........................................................................................... 1-481.7.1 Introduction............................................................................................................ 1-481.7.2 Configuring Digest Snooping ................................................................................ 1-481.8 Configuring Rapid Transition ........................................................................................... 1-501.8.1 Introduction............................................................................................................ 1-501.8.2 Configuring Rapid Transition................................................................................. 1-521.9 Configuring VLAN-VPN Tunnel ....................................................................................... 1-531.9.1 Introduction............................................................................................................ 1-531.9.2 Configuring VLAN-VPN tunnel .............................................................................. 1-541.10 STP Maintenance Configuration.................................................................................... 1-551.10.1 Introduction.......................................................................................................... 1-551.10.2 Enabling Log/Trap Output for Ports of MSTP Instance ...................................... 1-551.10.3 Configuration Example........................................................................................ 1-551.11 Enabling Trap Messages Conforming to 802.1d Standard ........................................... 1-551.12 Displaying and Maintaining MSTP................................................................................. 1-561.13 MSTP Configuration Example ....................................................................................... 1-561.14 VLAN-VPN tunnel Configuration Example .................................................................... 1-59