HP 24S Guía de usuario descargar pdf (Pagina 51)

Testing the Hub’s Ports and the Links

To test the hub’s ports and the attached network links, choose one of the following ways to

run a test between the hub and an addressable device connected at the remote end of each

of the cables you wish to test:

Use the console’s Testlink command to run a link test. This works with devices

able to send an IEEE 802.2 Test response packet upon receipt of a Test command

packet. You specify the remote device by its 12-digit hexadecimal station address.

See “Testlink” in chapter 3 for details.

For the HP 28688B and HP 28699A only, use the console’s Ping command to run a

network-layer test. This works with devices having an IP address and which are

able to respond to an ICMP echo request packet. You specify the remote device by

its IP address. See “Ping” in chapter 3 for details.

For the HP 28688B and HP 28699A only, use HP network management software

to test the link. For instructions, see the network management product’s

documentation.

If the test passes, the hub’s port, the network link, and the remote device are all working

properly. If testing the AUI port, this also tests a transceiver that is connected to the port.

If the test fails, you can test the hub using the procedures on the previous page. You

should also verify that the remote device is powered on and functioning properly, and that

the cable is good.

Testing Twisted-Pair Cabling

Twisted-pair cable must be compatible with the IEEE 802.3 Type 10Base-T standard.

Instruments are available that you can use to verify that your cable is compatible with

this standard. One such instrument is the HP 28687A Wire Test Instrument. HP also

offers a wire testing service. Contact your local HP sales office for more information.

Troubleshooting 4-5

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HP 24S Guía de usuario Pagina 51