HP JD320B User Manual

2.
The destination affixes a time stamp to each packet that it receives, and then sends the packet 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.
Configure the destination port of
UDP packets
destination port port-number
Required
By default, no destination port
number is configured.
The destination port must be the
same as that of the listening service
on the NQA server.
Specify the source port number of
UDP packets
source port port-number
Optional
By default, no source port number
is specified.
Configure the size of the data field
in each UDP packet
data-size size
Optional
100 bytes by default.
Configure the string to be filled in
the data field of each probe packet
data-fill string
Optional
By default, the string is the
hexadecimal number
00010203040506070809.
Configure the number of probe
packets to be sent during each UDP
jitter probe operation
probe packet-number
packet-number
Optional
10 by default.
Configure the interval for sending
probe packets during each UDP
jitter probe operation
probe packet-interval
packet-interval
Optional
20 milliseconds by default.
18

HP JD320B Specifications

General

Brand	HP
Model	JD320B
Category	Switch
Language	English