HP J2415A Installation And Reference Manual page 63

Verify LAN link communications. Use HP Stack Manager's software
to check the Link Training status for each LAN port. These tests are
available only on hubs that have an HP 100VG SNMP/Bridge Module
installed.
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:
• Select Link Test from HP Stack Manager's Network Test dialog box.
This causes the hub to send IEEE 802.2 Test command packets to a
specified network device. The device must be 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 MAC
address.
• Select Ping Test from HP Stack Manager's Network Test dialog box.
This is a network layer test that you can run on TCP/IP networks.
The hub sends IP Echo Request packets to a specified network
device. This works with devices that have an IP address and are able
to respond to an ICMP Echo Request packet. You specify the remote
device by its IP address. Note that to perform this test the hub must
have an IP address.
• Select IPX Test from HP Stack Manager's Network Test dialog box.
This is a network layer test that you can run on Novell NetWare IPX
networks. The hub sends IPX test packets to a specified network
device. This works with devices that have an IPX address and are
able to respond to an IPX test packet. You specify the remote device
by its IPX address.
If the test passes, the hub's port, the network link, and the remote device are
all working properly.
If the test fails, you can test the hub using the "Hub Reset" procedures
described on the previous page. You should also verify that the remote
device is powered on and functioning properly, and that the cable is good.
If the hub passes its tests, but the network test (link test, Ping test, or IPX
test) fails, the problem is in the cabling, the remote device, or possibly the
output circuitry of the hub's port.
See the HP Stack Manager online help for more information on how to
execute these tests.
Troubleshooting
3-5