3Com 4200G 12-Port Configuration Manual page 633

Test parameter
Test type (test-type)
Number of probes per
test (count)
Packet size (datasize)
Maximum number of
history records that can
be saved
(history-records)
Automatic test interval
(frequency)
Probe timeout time
(timeout)
Type of service (tos)
dns
dns-server
HTTP operation type
(http-operation)
FTP operation type
(ftp-operation)
FTP login username and
password (username
and password)
File name for FTP
operation (filename)
Number of jitter test
packets to be sent per
probe
(jitter-packetnum)
Interval to send jitter test
packets (jitter-interval)
You can use remote-ping to test a variety of protocols, see
for details.
To perform a type of test, you must first create a test group of this
type. One test group can be of only one remote-ping test type.
If you modify the test type of a test group using the test-type
command, the parameter settings, test results, and history records of
the original test type will be all cleared.
For tests except jitter test, only one test packet is sent in a probe. In a
jitter test, you can use the jitter-packetnum command to set the number
of packets to be sent in a probe.
For ICMP/UDP/jitter test, you can configure the size of test packets.
For ICMP test, the ICMP packet size refers to the length of
ECHO-REQUEST packets (excluding IP and ICMP headers)
This parameter is used to specify the maximum number of history
records that can be saved in a test group. When the number of saved
history records exceeds the maximum number, remote-ping discards
some earliest records.
This parameter is used to set the interval at which the remote-ping client
periodically performs the same test automatically.
The probe timeout timer is started after the remote-ping client sends
out a test packet.
This parameter is in seconds.
Type of service is the value of the ToS field in IP header in the test
packets.
This parameter is used to specify a DNS domain name in a remote-ping
DNS test group.
This parameter is used to set the DNS server IP address in a
remote-ping DNS test group.
This parameter is used to set the type of HTTP interaction operation
between remote-ping client and HTTP server.
This parameter is used to set the type of FTP interaction operation
between remote-ping client and FTP server.
The two parameters are used to set the username and password to be
used for FTP operation.
Name of a file to be transferred between remote-ping client and FTP
server
Jitter test is used to collect statistics about delay jitter in UDP packet
transmission
In a jitter probe, the remote-ping client sends a series of packets to
the remote-ping server at regular intervals (you can set the interval).
Once receiving such a packet, the remote-ping server marks it with a
timestamp, and then sends it back to the remote-ping client. Upon
receiving a packet returned, the remote-ping client computes the
delay jitter time. The remote-ping client collects delay jitter statistics
on all the packets returned in the test. So, the more packets a jitter
probe sends, the more accurate the jitter statistics is, but the longer
time the jitter test costs.
Each jitter probe will send multiple UDP test packets at regular intervals
(you can set the interval). The smaller the interval is, the faster the test is.
But a too small interval may somewhat impact your network.
1-3
Description
Table 1-1