====== Test Multicast Join ======
Jun 2017
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We can test if our device can join a multicast using a tool called iperf. iperf is not installed by default, so you will have to add it by us9ing:
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yum install iperf
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Once installed, you can use iperf to connect to a multicast stream by using the following syntax.
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iperf -s -u -B 239.0.200.1 -p 10001 -i 1
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==== Example output ====
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Server listening on UDP port 10001
Binding to local address 239.0.200.1
Joining multicast group 239.0.200.1
Receiving 1470 byte datagrams
UDP buffer size: 16.0 MByte (default)
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[ 3] local 239.0.200.1 port 10001 connected with 10.27.250.1 port 10000
[ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams
[ 3] 0.0- 1.0 sec 775 KBytes 6.35 Mbits/sec 1472463338220.286 ms 1195888311/1195888914 (1e+02%)
[ 3] 0.0- 1.0 sec 595 datagrams received out-of-order
[ 3] 1.0- 2.0 sec 775 KBytes 6.35 Mbits/sec 1590510364122.785 ms 0/ 0 (-nan%)
[ 3] 1.0- 2.0 sec 603 datagrams received out-of-order
[ 3] 2.0- 3.0 sec 775 KBytes 6.35 Mbits/sec 1477144115030.008 ms 0/ 0 (-nan%)
[ 3] 2.0- 3.0 sec 603 datagrams received out-of-order
[ 3] 3.0- 4.0 sec 775 KBytes 6.35 Mbits/sec 1472946740641.257 ms 0/ 0 (-nan%)
[ 3] 3.0- 4.0 sec 603 datagrams received out-of-order
[ 3] 4.0- 5.0 sec 775 KBytes 6.35 Mbits/sec 1264384362197.854 ms 6/ 7 (86%)
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