Installing and Administering LAN/9000 Software

Chapter 4 107

Troubleshooting LAN/9000

Diagnostic Flowcharts

Flowchart 10 Procedures

A. Examine gateway. If the gateway is an HP 9000, go to

C. If it is not, go to B.

B. Other HP; other vendors. Go to C.

C. Refer to networking documentation. Refer to the

documentation that came with the gateway for

additional diagnostics.

D. HP 9000. Go to E.

E. Execute: ifconﬁg on gateway host. Execute ifconfig for

all network interfaces on the gateway.

F. Networkinterface up? If the output from ifconfig does

not include the UP parameter, the network interface is

down. Execute netstat -in to check the status of the

network interfaces. An asterisk (*) next to the interface

indicates that the interface is down.

If the network interface is down, go to Flowchart 2. If

the network interfaces are UP, start again with

Flowchart 1. Using Flowchart 1, test all network

interfaces on the gateway.

Use netstat -in to make sure that the conﬁgured

encapsulation is correct.

NOTE Running is always displayed. It indicates only that there is OS support

for the interface.

G. Conﬁgure interface up. Execute ifconfig on each

interface to bring it up. Start again with Flowchart 1.

Using Flowchart 1, test all network interfaces on the

gateway.