3Com S7906E Configuration Manual page 2187

Figure 1-11 Network diagram for fast detection configuration
Configuration procedure
1) Configuration on Device A
# Configure the suppression time of physical-link-state changes on GigabitEthernet 2/0/1 and
GigabitEthernet 2/0/2 as zero, disable STP, configure the two ports as trunk ports, and assign them to
all VLANs.
<DeviceA> system-view
[DeviceA] interface gigabitethernet 2/0/1
[DeviceA-GigabitEthernet2/0/1] link-delay 0
[DeviceA-GigabitEthernet2/0/1] undo stp enable
[DeviceA-GigabitEthernet2/0/1] port link-type trunk
[DeviceA-GigabitEthernet2/0/1] port trunk permit vlan all
[DeviceA-GigabitEthernet2/0/1] quit
[DeviceA] interface gigabitethernet 2/0/2
[DeviceA-GigabitEthernet2/0/2] link-delay 0
[DeviceA-GigabitEthernet2/0/2] undo stp enable
[DeviceA-GigabitEthernet2/0/2] port link-type trunk
[DeviceA-GigabitEthernet2/0/2] port trunk permit vlan all
[DeviceA-GigabitEthernet2/0/2] quit
# Create RRPP domain 1, configure VLAN 4092 as the primary VLAN of RPPP domain 1, and configure
the VLANs mapped to MSTIs 0 through 31 as the protected VLANs of RRPP domain 1.
[DeviceA] rrpp domain 1
[DeviceA-rrpp-domain1] control-vlan 4092
[DeviceA-rrpp-domain1] protected-vlan reference-instance 0 to 31
# Configure Device A as the master node of the primary ring Ring 1, with GigabitEthernet 2/0/1 as the
primary port and GigabitEthernet 2/0/2 as the secondary port, and enable Ring 1.
[DeviceA-rrpp-domain1] ring 1 node-mode master primary-port gigabitethernet 2/0/1
secondary-port gigabitethernet 2/0/2 level 0
[DeviceA-rrpp-domain1] ring 1 enable
# Enable fast detection, and set the Fast-Fail timer and Fast-Hello timer to 300 milliseconds and 100
milliseconds respectively.
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