R3166-R3206-HP High-End Firewalls High Availability Configuration Guide-6PW101

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To do… Use the command… Remarks
Configure optional parameters
See “Configuring optional
parameters for an NQA test
group”
Optional
NOTE:
The TCP port must be port 80 on the HTTP server for NQA HTTP tests.
Configuring UDP jitter tests
NOTE:
Do not perform NQA UDP jitter tests on known ports, ports from 1 to 1023. Otherwise, UDP jitter tests
might fail or the corresponding services of this port might be unavailable.
Real-time services such as voice and video have high requirements on delay jitters. UDP jitter tests of an
NQA test group obtain uni/bi-directional delay jitters. The test results help you verify whether a network
can carry real-time services.
A UDP jitter test takes the following procedure:
1. The source sends packets at regular intervals to the destination port.
2. The destination affixes a time stamp to each packet that it receives, and then sends it back to the
source.
3. Upon receiving the response, the source calculates the delay jitter, which reflects network
performance. Delay refers to the amount of time it takes a packet to be transmitted from source to
destination or from destination to source. Delay jitter is the delay variation over time.
Configuration prerequisites
UDP jitter tests require cooperation between the NQA server and the NQA client. Before you start UDP
jitter tests, configure UDP listening services on the NQA server. For more information about UDP listening
service configuration, see “Configuring the NQA server.”
Configuring UDP jitter tests
Follow these steps to configure UDP jitter tests:
To do… Use the command…
Remarks
Enter system view system-view —
Enter NQA test group view
nqa entry admin-name
operation-tag
—
Configure the test type as UDP jitter
and enter test type view
type udp-jitter Required
Configure the destination address
of UDP packets
destination ip ip-address
Required
By default, no destination IP
address is configured.
The destination IP address must be
the same as that of the listening
service on the NQA server.