3.Troubleshooting Functional Failures in Operation

3.16Communication Failures on Neighboring System Managing Function

3.16.1Unable to Obtain Neighboring System Information via LLDP Function

If it is not possible to acquire correctly neighbor system information with LLDP functions, isolate the problem using the failure analysis method shown in the table below.

Table 3-63: Failure Analysis Method When Using LLDP Functions

No.

Troubleshooting Steps and Command

Action

 

 

 

 

1

Check the status of LLDP functions using the

If "Status" is "Enabled," go to No. 2.

 

show lldp command.

 

 

 

 

If "Status" is "Disabled," the LLDP function is disabled. Enable the LLDP

 

 

 

 

 

 

function.

 

 

 

2

Execute the show lldp command to check

If the information on the port to which the neighboring system is connected

 

the port information.

appears, go to No. 3.

 

 

 

If the information on the port to which the neighboring system is connected does

 

 

 

not appear, the port is not covered by the LLDP function. Enable the LLDP

 

 

 

function for the port.

 

 

 

3

Execute the show lldp statistics

If the Tx count has been incremented while the Rx has not, also check No. 1

 

command to check for the statistics on the

through 3 on the neighboring system. If the Tx count also has been incremented on

 

port to which the neighboring system is

the neighboring system, check the connection, since the systems may be

 

connected.

incorrectly connected.

 

 

 

 

 

 

 

If the Discard count has been incremented, check the connection between the

 

 

 

systems.

 

 

 

 

 

 

 

Otherwise, go to No. 4.

 

 

 

4

Execute the show lldp command to check

If the Link has been established, go to No. 5.

 

the status of the port to which the neighboring

 

If the Link is Down, check the line status. For checking the status, see

 

system is connected.

 

"3.4 Network Interface Communication Failure."

 

 

 

 

 

 

5

Execute the show lldp command to check

If "Neighbor Counts" is zero (0), check No. 1 through 5 on the neighboring system.

 

the number of neighboring system

If the number of the neighboring system information is also set to zero (0) on the

 

information on the port to which the

neighboring system, check the connection since it may be incorrect. LLDP control

 

neighboring system is connected.

frames may have been discarded by filtering or QoS control.

 

 

 

See "3.23.1 Checking Filtering/QoS Setting Information" to check for it.

 

 

 

 

3.16.2Unable to Obtain Neighboring System Information via OADP Function

If it is not possible to acquire the neighboring system information correctly with the OADP function, isolate the problem using the failure analysis method shown in the table below.

Table 3-64: Failure Analysis When Using OADP Function

No.

Troubleshooting Steps and Command

Action

 

 

 

 

1

Execute the show oadp command to check

If "Status" is "Enabled," go to No. 2.

 

the OADP operation.

 

If "Status" is "Disabled," the OADP function is disabled. Enable the OADP

 

 

 

 

 

 

function.

 

 

 

 

116

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NEC IP8800/S6700 manual Failure Analysis Method When Using Lldp Functions, Failure Analysis When Using Oadp Function
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