3Com MSR 50 Series, Руководство по настройке

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2022 C
HAPTER
109: NQA O
VERVIEW
■
The source port sends packets at regular intervals to the destination port.
■
The destination port affixes a time stamp to each packet that it receives and
then sends it back to the source port.
■
Upon receiving the packet, the source port calculates the delay jitter, and the
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... 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 for a test operation destination ip ip-address 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.
Configure the destination
port for a test operation destination port
port-number
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.
Specify the source port
number for a request source port port-number Optional
By default, no source port
number is specified.
Configure the size of a probe
packet sent data-size size Optional
100 bytes by default.
Configure the string of fill
characters of a probe packet
sent data-fill string Optional
The string of fill characters of
an ICMP probe packet is the
string corresponding to the
ASCII code 00 to 09 by
default.
Configure the number of
consecutive packets in a
UDP-jitter probe probe packet-number
packet-number
Optional
10 by default.