3Com 7757 Configuration Manual page 917

Switch B, Switch C and Switch D are transit nodes of the primary ring. Their
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respective GigabitEthernet2/0/1 and GigabitEthernet2/0/2 serve as the primary
and secondary ports
The default values are used for the timers on the primary ring
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Network diagram
Figure 254 Network diagram for single ring topology
Master node
Transit node
Configuration procedure
c
CAUTION: Make sure that the switch ports connecting the Ethernet rings have
been configured as trunk ports. All ports allow data VLAN packets to pass. And
STP has been disenabled on all the ports connecting the Ethernet rings.
Configure Switch A
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<SW7750> system-view
[SW7750] rrpp domain 1
[SW7750-rrpp-domain-1] control-vlan 4092
[SW7750-rrpp-domain-1] ring 1 node-mode master primary-port GigabitE
thernet2/0/1 secondary-port GigabitEthernet2/0/2 level 0
[SW7750-rrpp-domain-1] ring 1 enable
[SW7750-rrpp-domain-1] quit
[SW7750] rrpp enable
Configure Switch B
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<SW7750> system-view
[SW7750] rrpp domain 1
[SW7750-rrpp-domain-1] control-vlan 4092
[SW7750-rrpp-domain-1] ring 1 node-mode transit primary-port Gigabit
Ethernet2/0/1 secondary-port GigabitEthernet2/0/2 level 0
[SW7750-rrpp-domain-1] ring 1 enable
[SW7750-rrpp-domain-1] quit
[SW7750] rrpp enable
Configure Switch C
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<SW7750> system-view
[SW7750] rrpp domain 1
[SW7750-rrpp-domain-1] control-vlan 4092
[SW7750-rrpp-domain-1] ring 1 node-mode transit primary-port Gigabit
Domain 1
Switch A
GE2/0/1
GE 2/0/1
GE 2/0/2
GE2/0/2
Ring 1
GE2 /0/1
GE2/0/2
GE 2/0 /1
Switch D GE 2/0 /2
Configuration Example
Switch B
Transit node
Transit node
Switch C
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