C-60
Troubleshooting
Diagnostic Tools
Ping and Link Tests
The Ping test and the Link test are point-to-point tests between your switch
and another IEEE 802.3-compliant device on your network. These tests can
tell you whether the switch is communicating properly with another device.
N o t e
To respond to a Ping test or a Link test, the device you are trying to reach must
be IEEE 802.3-compliant.
Ping Test.
This is a test of the path between the switch and another device
on the same or another IP network that can respond to IP packets (ICMP Echo
Requests). To use the
ping
(or
traceroute
) command with host names or fully
qualified domain names, refer to “DNS Resolver” on page C-64.
Link Test.
This is a test of the connection between the switch and a desig-
nated network device on the same LAN (or VLAN, if configured). During the
link test, IEEE 802.2 test packets are sent to the designated network device
in the same VLAN or broadcast domain. The remote device must be able to
respond with an 802.2 Test Response Packet.
3500-5400-6200-8200-MCG-Jan08-K_13_01.book Page 60 Monday, January 28, 2008 10:04 AM