Troubleshooting - 3Com S7906E Configuration Manual

[DeviceD-GigabitEthernet2/0/1] undo stp enable
[DeviceD-GigabitEthernet2/0/1] port link-type trunk
[DeviceD-GigabitEthernet2/0/1] port trunk permit vlan all
[DeviceD-GigabitEthernet2/0/1] quit
[DeviceD] interface gigabitethernet 2/0/2
[DeviceD-GigabitEthernet2/0/2] link-delay 0
[DeviceD-GigabitEthernet2/0/2] undo stp enable
[DeviceD-GigabitEthernet2/0/2] port link-type trunk
[DeviceD-GigabitEthernet2/0/2] port trunk permit vlan all
[DeviceD-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.
[DeviceD] rrpp domain 1
[DeviceD-rrpp-domain1] control-vlan 4092
[DeviceD-rrpp-domain1] protected-vlan reference-instance 0 to 31
# Configure Device D as a transit 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.
[DeviceD-rrpp-domain1]
secondary-port gigabitethernet 2/0/2 level 0
[DeviceD-rrpp-domain1] ring 1 enable
[DeviceD-rrpp-domain1] quit
# Enable the RRPP protocol.
[DeviceD] rrpp enable
5) Verification
After the above configuration is completed, you can use the display command to view RRPP
configuration and operational information on Device A and Device D.

Troubleshooting

Symptom:
When the link state is normal, the master node cannot receive Hello packets, and the master node
unblocks the secondary port.
Analysis:
The reasons may be:
RRPP is not enabled on some nodes in the RRPP ring.
The domain ID or primary control VLAN ID is not the same for the nodes in the same RRPP ring.
Some ports are abnormal.
Solution:
Use the display rrpp brief command to check whether RRPP is enabled for all nodes. If not, use
the rrpp enable command and the ring enable command to enable RRPP and RRPP rings for all
nodes.
Use the display rrpp brief command to check whether the domain ID and primary control VLAN ID
are the same for all nodes. If not, set the same domain ID and primary control VLAN ID for the
nodes.
Use the display rrpp verbose command to check the link state of each port in each ring.
ring 1 node-mode transit
1-38
primary-port gigabitethernet 2/0/1