H3C Technologies H3C S10500 Series Switches - Manual (Page 55)

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%Jan 18 17:47:35:894 2010 DeviceA IFNET/3/LINK_UPDOWN: GigabitEthernet1/0/50 link status
is UP.
The output shows that the link status of both GigabitEthernet 1/0/49 and GigabitEthernet 1/0/50 is
now up.
Manually shutting down unidirectional links
Network requirements
• As shown in Figure 12 , Device A and Device B are connected with two fiber pairs.
• Configure DLDP to send information when a unidirectional link is detected, to remind the network
administrator to manually shut down the faulty port.
Figure 12 Network diagram for configuring manual shutdown of unidirectional links
Correct fiber connection
Fiber link
Cross-connected fibers
Device A
Device B
Device A
Device B
Ethernet
optical port
Tx end Rx end
GE1/0/49 GE1/0/50 GE1/0/49 GE1/0/50
GE1/0/49 GE1/0/50 GE1/0/49 GE1/0/50
Configuration procedure
1. Configure Device A.
# Enable DLDP globally.
system-view
[DeviceA] dldp enable
# Configure GigabitEthernet 1/0/49 to operate in full duplex mode and at 1000 Mbps, and enable
DLDP on the port.
[DeviceA] interface gigabitethernet 1/0/49
[DeviceA-GigabitEthernet1/0/49] duplex full
[DeviceA-GigabitEthernet1/0/49] speed 1000
[DeviceA-GigabitEthernet1/0/49] dldp enable
[DeviceA-GigabitEthernet1/0/49] quit