display nqa history

Function

The display nqa history command displays historical records about an NQA test.

Format

display nqa history [ test-instance admin-name test-name ]

Parameters

Parameter	Description	Value
test-instance	Indicates NQA test instances.	-
admin-name	Specifies the name of the administrator of an NQA test instance.	The value is a case-sensitive character string. The length of a name without spaces ranges from 1 to 32 characters. The length of a name with spaces ranges from 3 to 34 characters. If a name contains spaces, the name must be enclosed with quotation marks (for example, "admin for test").
test-name	Specifies the name of an NQA test instance.	The value is a case-sensitive character string. The length of a name without spaces ranges from 1 to 32 characters. The length of a name with spaces ranges from 3 to 34 characters. If a name contains spaces, the name must be enclosed with quotation marks (for example, "name for test").

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

Usage Scenario

NQA test instances can detect network operation conditions, output statistics, and effectively cut costs. NQA measures the performance of different protocols on the network, which allows carriers to collect the operation indicator of networks in real time.

The display nqa history command helps you understand the network status by displaying the operation statistics about each test packet, including the status and round-trip delay.

Precautions

If no parameter is specified, the history records of all NQA tests are displayed.

In the case of UDP-jitter test instances, the test failure is not recorded in the historical data.

When NQA test result table and historical table are displayed in a split screen, latest results are displayed to improve user experience.

Example

# Display historical records about an NQA test.

<sysname> display nqa history test-instance admin icmp
NQA entry(admin, icmp) history:
Index T/H/P       Response Status       Address         Time
 1    1/1/1           90ms success      2.2.2.2         2012-03-22 17:47:39.270
 2    1/1/2          100ms success      2.2.2.2         2012-03-22 17:47:43.320
 3    1/1/3          100ms success      2.2.2.2         2012-03-22 17:47:47.400

**Table 1** Description of the **display nqa history test-instance admin icmp** command output
Item	Description
Index	Index of a test record
T/H/P	T (Times): number of times an NQA test instance is performed H (Hop): current hop P (Probe): number of the current probe times during an NQA test instance
Response	Period from the time when a probe packet is sent to the time when a response packet is received
Status	Probe status: success: The probe succeeds. timeout: The probe times out and no response packet is received. busy: The resources are insufficient and the probe packet fails to be sent. When the Status is Busy, the value of the Response field is 0 ms. drop: The probe packet is discarded. When the Status is Drop, the value of the Response field is 0 ms.
Address	Destination IP address of an NQA test instance
Time	Time when the response packet is received