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Maintaining and Debugging the System 317
You can perform the following operations in all views.
To view the data later, enable saving a screen capture to a file.
Testing Tools for
Network Connection
The descriptions of testing tools for a network connection are found in the
following:
■ Ping
■ Tracert Command
Ping
The ping command can be used to check the network connection and to verify
whether the host can be reached.
Perform the following operation in user view.
The output of the ping command includes:
■ The response to each ping message. If no response packet is received when
time is out,”Request time out” information appears. Otherwise, the data bytes,
the packet sequence number, TTL, and the round-trip time of the response
packet will be displayed.
■ The final statistics, which include the:
■ number of the packets the switch sent out and received
■ packet loss ratio
■ round-trip time in its minimum value, mean value and maximum value
Tracert Command
Tracert is used for testing the gateways from the source host to the destination. It
is used for checking if the network is connected and analyzing where faults occur
in the network.
The following list provides the tracert execution process:
1 Tracert sends a packet with TTL value of 1.
2 The first hop sends back an ICMP error message indicating that the packet cannot
be sent, for the TTL is timeout.
3 Re-send the packet with TTL value of 2.
4 The second hop returns the TTL timeout message.
Table 33 Displaying Diagnostic Information
Operation Command
Display diagnostic information display diagnostic-information
Table 34 The Ping Command
Operation Command
Support IP ping ping [ -a ip-address ] [-c count ] [ -d ] [ -i
{interface-type interface-num | interface-name
} ][ ip ] [ -n ] [ - p pattern ] [ -q ] [ -r ][ -s
packetsize ] [ -t timeout ] [ -v ] host