R3303-HP HSR6800 Routers High Availability Configuration Guide

Neighbor mac address : 0023-8956-3600

Neighbor port index : 60

Neighbor state : two way

Neighbor aged time : 12

The output indicates that both GigabitEthernet 3/0/1 and GigabitEthernet 3/0/2 are in

Advertisement state, which means both links are bidirectional.

# Enable system information monitoring on Router A, and enable the display of log and trap

information.

[RouterA] quit

<RouterA> terminal monitor

<RouterA> terminal logging

<RouterA> terminal trapping

The following log and trap information is displayed on Router A:

#Jan 18 18:10:38:481 2010 RouterA DLDP/1/TrapOfUnidirectional: -Slot=2; Trap

1.3.6.1.4.1.255062.43.2.1.1 : DLDP detects a unidirectional link in port 17825792.

%Jan 18 18:10:38:481 2010 RouterA DLDP/3/DLDP_UNIDIRECTION_MANUAL: -Slot=2; DLDP

detects a unidirectional link on port GigabitEthernet3/0/1. The transceiver has

malfunction in the Tx direction or cross-connected links exist between the local device

and its neighbor. The shutdown mode is MANUAL. The port needs to be shut down by the

user.

#Jan 18 18:10:38:618 2010 RouterA DLDP/1/TrapOfUnidirectional: -Slot=2; Trap

1.3.6.1.4.1.255062.43.2.1.1 : DLDP detects a unidirectional link in port 17825793.

%Jan 18 18:10:38:618 2010 RouterA DLDP/3/DLDP_UNIDIRECTION_MANUAL: -Slot=2; DLDP

detects a unidirectional link on port GigabitEthernet3/0/2. The transceiver has

malfunction in the Tx direction or cross-connected links exist between the local device

and its neighbor. The shutdown mode is MANUAL. The port needs to be shut down by the

user.

The output indicates that DLDP has detected a unidirectional link on both GigabitEthernet 3/0/1

and GigabitEthernet 3/0/2, and is asking you to shut down the faulty ports manually.

After you shut down GigabitEthernet 3/0/1 and GigabitEthernet 3/0/2, the following log

information is displayed:

<RouterA> system-view

[RouterA] interface gigabitethernet 3/0/1

[RouterA-GigabitEthernet3/0/1] shutdown

%Jan 18 18:16:12:044 2010 RouterA IFNET/3/LINK_UPDOWN: GigabitEthernet3/0/1 link

status is DOWN.

[RouterA-GigabitEthernet3/0/1] quit

[RouterA] interface gigabitethernet 3/0/2

[RouterA-GigabitEthernet3/0/2] shutdown

%Jan 18 18:18:03:583 2010 RouterA IFNET/3/LINK_UPDOWN: GigabitEthernet3/0/2 link

status is DOWN.

The output indicates that the link status of both GigabitEthernet 3/0/1 and GigabitEthernet 3/0/2

is down.

Assume that in this example, the unidirectional links are caused by cross-connected fibers. Correct

the fiber connections, and then bring up the ports shut down earlier.

# On Router A, bring up GigabitEthernet 3/0/1 and GigabitEthernet 3/0/2: