3Com 4200G, 5500G, 4210 manual 3Com interface Ethernet 1/0/3 3Com-Ethernet1/0/3 stp disable

Configuring RSTP 87

# Enable MSTP.

<3Com> system-view

[3Com] stp enable

#Enabling MSTP globally on the switch enables RSTP on all the ports. Disable MSTP on the ports that are not involved in RSTP calculation, for example Ethernet 1/0/3.

[3Com] interface Ethernet 1/0/3

[3Com-Ethernet1/0/3] stp disable

#Configure the ports directly connected to users as edge ports and enable the BPDU guard function on these ports. Take Ethernet 1/0/3 for example.

[3Com-Ethernet1/0/3] stp edged-port enable

[3Com-Ethernet1/0/3] quit

[3Com] stp bpdu-protection

#Adopt the default MSTP operation mode, time-related parameters, and port parameters.

#The configuration on Switch E and Switch F are the same as that on Switch D.

Complete Configuration

1Configuration on Switch A

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stp instance 0 priority 0 (stp instance 0 root primary) stp TC-protection enable

stp enable

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interface GigabitEthernet2/0/1 stp root-protection

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interface GigabitEthernet2/0/2 stp root-protection

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interface GigabitEthernet2/0/4 stp disable

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2Configuration on Switch B

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stp instance 0 priority 4096 stp enable

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interface Ethernet1/0/4 stp root-protection

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interface Ethernet1/0/5 stp root-protection

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interface Ethernet1/0/6 stp root-protection

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