3com 8807 User Guide
838
C
HAPTER
72: S
YSTEM
M
AINTENANCE
AND
D
EBUGGING
n
When using the display diagnostic-information command to keep track of the
switch, you should execute the command at least twice so that you can compare
the information for locating problems.
switch, you should execute the command at least twice so that you can compare
the information for locating problems.
Testing Tools for
Network Connection
Network Connection
ping
The ping command can be used to check the network connectivity and host
reachability.
reachability.
Perform the following configuration in any view.
The output of the command includes:
■
The response to each ping message. If no response packet is received when the
timer expires, "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.
timer expires, "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, including the number of sent packets, the number of
received packets, the packet loss ratio, the round-trip time in its minimum
value, mean value and maximum value.
received packets, the packet loss ratio, the round-trip time in its minimum
value, mean value and maximum value.
quick-ping enable
Use the quick-ping enable command to enable the ping distribution function.
Use the undo quick-ping enable command to disable the ping distribution
function.
function.
Perform the following configuration in system view.
By default, the PING distribution function is enabled.
Table 803 Display diagnostic information
Operation
Command
Display diagnostic information
display diagnostic-information
Table 804 Execute the ping command
Operation
Command
Support IP ping
ping [ ip ] [ -a ip-address | -c count | -d | - f |
-h ttl | -i {interface-type interface-number } | -n
| - p pattern | -q | -r | -s packetsize | -t timeout
| -tos tos | -v | -vpn-instance
vpn-instance-name ]* host
-h ttl | -i {interface-type interface-number } | -n
| - p pattern | -q | -r | -s packetsize | -t timeout
| -tos tos | -v | -vpn-instance
vpn-instance-name ]* host
Table 805 Enable/disable the PING distribution function
Operation
Command
Enable the PING distribution function
quick-ping enable
Disable the PING distribution function
undo quick-ping enable