3Com MSR 50 Series Configuration Manual page 2022

2022 C 109: NQA O
HAPTER VERVIEW
The source port sends packets at regular intervals to the destination port.
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The destination port affixes a time stamp to each packet that it receives and
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then sends it back to the source port.
Upon receiving the packet, the source port calculates the delay jitter, and the
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network status can be displayed.
Configuration prerequisites
A UDP-jitter test requires cooperation between the NQA server and the NQA
client. Before the UDP-jitter test, make sure that the UDP listening function is
configured on the NQA server.
Configuring the UDP-jitter test
Follow these steps to configure the UDP-jitter test:
To do...
Enter system view
Enter NQA test group view
Configure the test type as
UDP-jitter and enter test type
view
Configure the destination
address for a test operation
Configure the destination
port for a test operation
Specify the source port
number for a request
Configure the size of a probe
packet sent
Configure the string of fill
characters of a probe packet
sent
Configure the number of
consecutive packets in a
UDP-jitter probe
Use the command...
system-view
nqa entry admin-name
operation-tag
type udp-jitter
destination ip ip-address
destination port
port-number
source port port-number
data-size size
data-fill string
probe packet-number
packet-number
Remarks
-
-
Required
Required
By default, no destination IP
address is configured for a
test operation.
The destination IP address
must be consistent with that
of the existing listening service
on the NQA server.
Required
By default, no destination port
number is configured for a
test operation.
The destination port must be
consistent with that of the
existing listening service on
the NQA server.
Optional
By default, no source port
number is specified.
Optional
100 bytes by default.
Optional
The string of fill characters of
an ICMP probe packet is the
string corresponding to the
ASCII code 00 to 09 by
default.
Optional
10 by default.