3Com 4200G, 4210, 5500, 5500G - page 89

Configuring Digest Snooping and Rapid Transition 89
Network Diagram Figure25 Network diagram for digest snooping and rapid transition configuration
Networking and
Configuration
Requirements
■Use another vendor’s switch, Switch A in this scenario, as the root switch.
■Switch B and Switch C are connected to Switch A.
For Switch B:
■Set the priority of Switch B to 4096.
■Enable rapid transition and digest snooping on Switch B.
For Switch C:
■Set the priority of Switch C to 8192.
■Enable rapid transition and digest snooping on Switch C.
Applicable Products
Configuration Procedure
1Configuration on Switch B
# Enable MSTP.
<3Com> system-view
[3Com] stp enable
# Set the priority of Switch B to 4096.
[3Com] stp priority 4096
# Enable digest snooping on Switch B.
[3Com] stp config-digest-snooping
# Enable digest snooping on the root port Ethernet 1/0/1.
Switch CSwitch B
Switch A
Eth 1/0/2
Eth 1/0/1
Eth 1/0/2Eth 1/0/1
Eth 1/0/1
Eth 1/0/2
Product series Software version Hardware version
Switch 5500 Release V03.02.04 All versions
Switch 5500G Release V03.02.04 All versions
Switch 4500 Release V03.03.00 All versions
Switch 4210 Release V03.01.00 All versions