3com 4210 User Manual

HAPTER

14: MSTP C

ONFIGURATION

UIDE

[3Com] interface Ethernet 1/0/1

[3Com-Ethernet1/0/1] stp config-digest-snooping

# Enable rapid transition on the root port Ethernet 1/0/1.

[3Com-Ethernet1/0/1] stp no-agreement-check

[3Com-Ethernet1/0/1] quit

2 Configuration on Switch C

# Enable MSTP.

<3Com> system-view

[3Com] stp enable

# Set the priority of Switch C to 8192.

[3Com] stp priority 8192

# Enable digest snooping on Switch C.

[3Com] stp config-digest-snooping

# Enable digest snooping on the root port Ethernet 1/0/2.

[3Com] interface Ethernet 1/0/2

[3Com-Ethernet1/0/2] stp config-digest-snooping

[3Com-Ethernet1/0/2] quit

# Enable rapid transition on Ethernet 1/0/1.

[3Com] interface Ethernet 1/0/1

[3Com-Ethernet1/0/1] stp no-agreement-check

[3Com-Ethernet1/0/1] quit

■

The rapid transition feature can be enabled only on root ports or alternate
ports.

■

You can enable rapid transition on a designated port, but the configuration
cannot take effect on the port.

Complete Configuration

1 Configuration on Switch B

stp enable

stp instance 0 priority 4096

stp config-digest-snooping

interface Ethernet1/0/1

stp config-digest-snooping

stp no-agreement-check

2 Configuration on Switch C

stp enable

stp instance 0 priority 8192