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--- wiki:test_multicast_join [2017/06/20 07:05] – created walkeradmin
+++ wiki:test_multicast_join [2023/03/09 22:35] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
-====== Test Multicast Join ======
+====== Test Multicast Join (iperf) ======
+<color #db5f0b>Jun 2017</color>
+\\
+\\
+----
+We can test if our device can join a multicast using a tool called <color #ed1c24>iperf</color>. <color #ed1c24>iperf</color> is not installed by default, so you will have to add it by us9ing:
+\\
-[root@env-4e-960565 ~]# iperf -s -u -B 239.0.200.1 -p 10001 -i 1
+    yum install iperf
+\\
+\\
+If you see the following error when trying to install iperf:
+\\
+<file>
+Loaded plugins: fastestmirror
+base                                                                                  | 3.6 kB  00:00:00
+extras                                                                                | 3.4 kB  00:00:00
+updates                                                                               | 3.4 kB  00:00:00
+(1/4): base/7/x86_64/group_gz                                                         | 156 kB  00:00:00
+(2/4): extras/7/x86_64/primary_db                                                     | 110 kB  00:00:00
+(3/4): updates/7/x86_64/primary_db                                                    | 2.7 MB  00:00:00
+(4/4): base/7/x86_64/primary_db                                                       | 5.7 MB  00:00:01
+Determining fastest mirrors
+ * base: anorien.csc.warwick.ac.uk
+ * extras: mirrors.clouvider.net
+ * updates: mirrors.coreix.net
+No package iperf available.
+Error: Nothing to do
+</file>
+\\
+The last line that states <color #ed1c24>Error: Nothing to do</color> means that CentOS doesn't know where to get iperf from (not in the repositories that CentOS is aware of) then you can run the following.
+\\
+    yum install epel-release
+\\
+This will install the relevant repositories for CentOS to find iperf. Once again you can run:
+\\
+    yum install iperf
+\\
+Once installed, you can use <color #ed1c24>iperf</color> to connect to a multicast stream by using the following syntax.
+\\
+    iperf -s -u -B 239.0.200.1 -p 10001 -i 1
+\\
+==== Example output ====
+<file>
 ------------------------------------------------------------
 Server listening on UDP port 10001
@@ Line 23: / Line 61: @@
 [  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%)
+</file>