116
NOTE:
The counting for the average or accumulate threshold type is performed per test, but the counting
for the
consecutive type is performed since the test group is started.
3. Triggered actions
The following actions may be triggered:
• none—NQA only records events for terminal display; it does not send trap information to the
network management server.
• trap-only—NQA records events and sends trap messages to the network management server.
NOTE:
NQA DNS tests do not support the action of sending trap messages. The action to be triggered in DNS
tests can only be the default one, none.
4. Reaction entry
In a reaction entry, a monitored element, a threshold type, and the action to be triggered are configured
to implement threshold monitoring.
The state of a reaction entry can be invalid, over-threshold, or below-threshold, using the following
workflow:
• Before an NQA test group starts, the reaction entry is in the state of invalid.
• After each test or probe, threshold violations are counted according to the threshold type and range
configured in the entry. If the threshold is violated consecutively or accumulatively for a specific
number of times, the state of the entry is set to over-threshold; otherwise, the state of the entry is set
to below-threshold.
If the action to be triggered is configured as trap-only for a reaction entry, when the state of the entry
changes, a trap message is generated and sent to the network management server.
NQA concepts
Test group
An NQA test group specifies test parameters including the test type, destination address, and destination
port. Each test group is uniquely identified by an administrator name and operation tag. You can
configure and schedule multiple NQA test groups to test different objects.
Test and probe
After the NQA test group starts, tests are performed at a specific interval. During each test, a specific
number of probe operations are performed. Both the test interval and the number of probe operations
per test are configurable. But only one probe operation is performed during one voice test.
In different test types, probe operation has the following different meanings:
• During a TCP or DLSw test, one probe operation means setting up one connection.
• During a UDP jitter or a voice test, one probe operation means continuously sending a specific
number of probe packets. The number of probe packets is configurable.
• During an FTP, HTTP, DHCP, or DNS test, one probe operation means uploading or downloading
a file, obtaining a web page, obtaining an IP address through DHCP, or translating a domain
name to an IP address.
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