138
# Enable saving history records.
[DeviceA-nqa-admin-test1-icmp-echo] history-record enable
# Configure the maximum number of history records that can be saved as 10.
[DeviceA-nqa-admin-test1-icmp-echo] history-record number 10
[DeviceA-nqa-admin-test1-icmp-echo] quit
# Start the ICMP echo operation.
[DeviceA] nqa schedule admin test1 start-time now lifetime forever
# After the ICMP echo operation runs for a period of time, stop the operation.
[DeviceA] undo nqa schedule admin test1
# Display the most recent result of the ICMP echo operation.
[DeviceA] display nqa result admin test1
NQA entry (admin admin, tag test1) test results:
Send operation times: 10 Receive response times: 10
Min/Max/Average round trip time: 2/5/3
Square-Sum of round trip time: 96
Last succeeded probe time: 2011-08-23 15:00:01.2
Extended results:
Packet loss ratio: 0%
Failures due to timeout: 0
Failures due to internal error: 0
Failures due to other errors: 0
# Display the history records of the ICMP echo operation.
[DeviceA] display nqa history admin test1
NQA entry (admin admin, tag test) history records:
Index Response Status Time
370 3 Succeeded 2007-08-23 15:00:01.2
369 3 Succeeded 2007-08-23 15:00:01.2
368 3 Succeeded 2007-08-23 15:00:01.2
367 5 Succeeded 2007-08-23 15:00:01.2
366 3 Succeeded 2007-08-23 15:00:01.2
365 3 Succeeded 2007-08-23 15:00:01.2
364 3 Succeeded 2007-08-23 15:00:01.1
363 2 Succeeded 2007-08-23 15:00:01.1
362 3 Succeeded 2007-08-23 15:00:01.1
361 2 Succeeded 2007-08-23 15:00:01.1
The output shows that the packets sent by Device A can reach Device B through Device C. No
packet loss occurs during the operation. The minimum, maximum, and average round-trip times are
2, 5, and 3 milliseconds, respectively.
DHCP operation configuration example
Network requirements
As shown in Figure 39, configure a DHCP operation to test the time required for Switch A to obtain an
IP address from the DHCP server.
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