RLDP (Ring Light Detection and Protection) of Simplified Optical 3.0 -- Configure one-way link detection
4.2.1 networking requirementsAs shown in Figures 4-2, devices A and B are connected by optical fibers, and the two lines in the figure represent the Tx and Rx lines of the optical fibers respectively. A and B enable the RLDP unidirectional link detection function. If either the Tx of port A and the Rx of port B or the Rx of port A and the Tx of port B fail, the protocol can detect the unidirectional fault and take corresponding actions. If the fault is recovered, the administrator can manually restore the protocol status on A and B and restart the detection.
4.2.2 Network topology diagram
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Figure 4-2
4.2.3 Key Points of Configuration
Enable RLDP globally.
Configure the one-way link detection function with RLDP under interface l and specify the processing method when a one-way fault occurs.
4.2.4 Configuration steps
# Configure on Device A.
DeviceA is enabled.
DeviceA# configure terminal
DeviceA(config)# rldp enable
DeviceA(config)# interfaceGigabitEthernet 0/1
DeviceA(config-if-GigabitEthernet0/1)# rldp port unidirection-detect shutdown-port
# Configure on SwitchB.
DeviceB is enabled.
DeviceB# configure terminal
DeviceB(config)# rldp enable
DeviceB(config)# interfaceGigabitEthernet 0/1
DeviceB(config-if-GigabitEthernet0/1)# rldp port unidirection-detect shutdown-port
4.2.5 verification configurationresult
Check the RLDP status information of DeviceA.
DeviceA> enable
DeviceA# show rldp
rldp state: enable
rldp hello interval: 3
rldp max hello : 2
rldp local bridge: 00d0.f822.33aa
-----------------------------------
Interface GigabitEthernet 0/1
port state: normal
neighbor bridge : 00d0.f800.51b1
neighbor port: GigabitEthernet 0/1
unidirection detect information:
The action "shutdown-port"
The state is normal.
# Check the RLDP status informationof DeviceB.
DeviceB enabled
DeviceB# show rldp
rldp state: enable
rldp hello interval: 3
rldp max hello : 2
rldp local bridge: 00d0.f800.51b1
-----------------------------------
Interface GigabitEthernet 0/1
port state: normal
neighbor bridge : 00d0.f822.33aa
Neighbor port: GigabitEthernet 0/1
unidirection detect information:
action: shutdown-port
The translation of "state :normal" is "state : normal".
4.2.5 Common error
(1) The local or peer global RLDP function is not enabled.
(2) The RLDP detection methods configured on the local end and the peer end are inconsistent.
(3) The RLDP negotiation function is not enabled, resulting in misjudgment of link failure when configuring RLDP unidirectional link detection on one end.
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