HP 6125G HP 6125G & 6125G/XG Blade Switches High Availability Configur - Page 49

The following log and trap information is displayed on Device

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Neighbor mac address : 0023-8956-3600 Neighbor port index : 60 Neighbor state : two way Neighbor aged time : 12 The output shows that both GigabitEthernet 1/1/3 and GigabitEthernet 1/1/4 are in Advertisement state, which means both links are bidirectional. # Enable system information monitoring on Device A, and enable the display of log and trap information. [DeviceA] quit terminal monitor terminal logging terminal trapping The following log and trap information is displayed on Device A: #Jan 18 17:36:18:798 2010 DeviceA DLDP/1/TrapOfUnidirectional: -Slot=1; Trap 1.3.6.1.4.1.25506.2.43.2.1.1 : DLDP detects a unidirectional link in port 17825792. %Jan 18 17:36:18:799 2010 DeviceA IFNET/3/LINK_UPDOWN: GigabitEthernet1/1/3 link status is DOWN. %Jan 18 17:36:18:799 2010 DeviceA DLDP/3/DLDP_UNIDIRECTION_AUTO: -Slot=1; DLDP detects a unidirectional link on port GigabitEthernet1/1/3. The transceiver has malfunction in the Tx direction or cross-connected links exist between the local device and its neighbor. The shutdown mode is AUTO. DLDP shuts down the port. #Jan 18 17:36:20:189 2010 DeviceA DLDP/1/TrapOfUnidirectional: -Slot=1; Trap 1.3.6.1.4.1.25506.2.43.2.1.1 : DLDP detects a unidirectional link in port 17825793. %Jan 18 17:36:20:189 2010 DeviceA IFNET/3/LINK_UPDOWN: GigabitEthernet1/1/4 link status is DOWN. %Jan 18 17:36:20:190 2010 DeviceA DLDP/3/DLDP_UNIDIRECTION_AUTO: -Slot=1; DLDP detects a unidirectional link on port GigabitEthernet1/1/4. The transceiver has malfunction in the Tx direction or cross-connected links exist between the local device and its neighbor. The shutdown mode is AUTO. DLDP shuts down the port. %Jan 15 16:54:56:040 2010 DeviceA DLDP/3/DLDP_UNIDIRECTION_AUTO_ENHANCE: -Slot=1; In enhanced DLDP mode, port GigabitEthernet1/1/3 cannot detect its aged-out neighbor. The transceiver has malfunction in the Tx direction or cross-connected links exist between the local device and its neighbor. The shutdown mode is AUTO. DLDP shuts down the port. The output shows that the link status of both GigabitEthernet 1/1/3 and GigabitEthernet 1/1/4 is down, and DLDP has detected a unidirectional link on both ports and has automatically shut them down. Assume that in this example, the unidirectional links are caused by cross-connected fibers. Correct the fiber connections on detecting the unidirectional link problem. As a result, the ports shut down by DLDP automatically recover, and Device A displays the following log information: %Jan 18 17:47:33:869 2010 DeviceA IFNET/3/LINK_UPDOWN: GigabitEthernet1/1/3 link status is UP. %Jan 18 17:47:35:894 2010 DeviceA IFNET/3/LINK_UPDOWN: GigabitEthernet1/1/4 link status is UP. 42

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42
Neighbor mac address : 0023-8956-3600
Neighbor port index : 60
Neighbor state : two way
Neighbor aged time : 12
The output shows that both GigabitEthernet 1/1/3 and GigabitEthernet 1/1/4 are in
Advertisement state, which means both links are bidirectional.
# Enable system information monitoring on Device A, and enable the display of log and trap
information.
[DeviceA] quit
<DeviceA> terminal monitor
<DeviceA> terminal logging
<DeviceA> terminal trapping
The following log and trap information is displayed on Device A:
<DeviceA>
#Jan 18 17:36:18:798 2010 DeviceA DLDP/1/TrapOfUnidirectional: -Slot=1; Trap
1.3.6.1.4.1.25506.2.43.2.1.1 : DLDP detects a unidirectional link in port 17825792.
%Jan 18 17:36:18:799 2010 DeviceA IFNET/3/LINK_UPDOWN: GigabitEthernet1/1/3 link
status is DOWN.
%Jan 18 17:36:18:799 2010 DeviceA DLDP/3/DLDP_UNIDIRECTION_AUTO: -Slot=1; DLDP
detects a unidirectional link on port GigabitEthernet1/1/3. The transceiver has
malfunction in the Tx direction or cross-connected links exist between the local device
and its neighbor. The shutdown mode is AUTO. DLDP shuts down the port.
#Jan 18 17:36:20:189 2010 DeviceA DLDP/1/TrapOfUnidirectional: -Slot=1; Trap
1.3.6.1.4.1.25506.2.43.2.1.1 : DLDP detects a unidirectional link in port 17825793.
%Jan 18 17:36:20:189 2010 DeviceA IFNET/3/LINK_UPDOWN: GigabitEthernet1/1/4 link
status is DOWN.
%Jan 18 17:36:20:190 2010 DeviceA DLDP/3/DLDP_UNIDIRECTION_AUTO: -Slot=1; DLDP
detects a unidirectional link on port GigabitEthernet1/1/4. The transceiver has
malfunction in the Tx direction or cross-connected links exist between the local device
and its neighbor. The shutdown mode is AUTO. DLDP shuts down the port.
%Jan 15 16:54:56:040 2010 DeviceA DLDP/3/DLDP_UNIDIRECTION_AUTO_ENHANCE: -Slot=1; In
enhanced DLDP mode, port GigabitEthernet1/1/3 cannot detect its aged-out neighbor.
The transceiver has malfunction in the Tx direction or cross-connected links exist
between the local device and its neighbor. The shutdown mode is AUTO. DLDP shuts down
the port.
The output shows that the link status of both GigabitEthernet 1/1/3 and GigabitEthernet 1/1/4 is
down, and DLDP has detected a unidirectional link on both ports and has automatically shut them
down.
Assume that in this example, the unidirectional links are caused by cross-connected fibers. Correct
the fiber connections on detecting the unidirectional link problem. As a result, the ports shut down
by DLDP automatically recover, and Device A displays the following log information:
<DeviceA>
%Jan 18 17:47:33:869 2010 DeviceA IFNET/3/LINK_UPDOWN: GigabitEthernet1/1/3 link
status is UP.
%Jan 18 17:47:35:894 2010 DeviceA IFNET/3/LINK_UPDOWN: GigabitEthernet1/1/4 link
status is UP.