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--- force_igmp_version_on_el_and_mux [2024/04/24 16:50] – created walkeradmin
+++ force_igmp_version_on_el_and_mux [2024/04/24 16:55] (current) – walkeradmin
@@ Line 1: / Line 1: @@
-====== IGMP Snooping Groups ======
+====== Force IGMP version on EL and Mux ======
 <color #db5f0b>Apr 2024</color>
 \\
@@ Line 5: / Line 5: @@
 ----
-When using
+When using IGMP sometimes we want to force the IGMP version, normally to match the version used on the data switches to unsure a cleaner operation during reboots, redundancy switches etc.
+\\
+\\
+The commands to do this differ between the Gx servers used for Encoding Live and the M1 servers used for Multiplexing.
+\\
+\\
+----
+==== Gx Servers ====
+\\
+At the time of writing, I have only tested this on the G8, not on the newer G9 as yet.
+\\
+\\
+This section below will change IGMP V3 to IGMP V2.
+<file>
+test -f /opt/ericsson/tuned-performance/etc/tuned.conf && sed -i -e "s|\(net\.ipv4\.conf\.[^.]*\.force_igmp_version = \)3|\12|" /opt/ericsson/tuned-performance/etc/tuned.conf
+test -f /opt/ericsson/tuned-performance/etc/ktune.sh && sed -i -e "s|do echo 3|do echo 2|" /opt/ericsson/tuned-performance/etc/ktune.sh
+sysctl --system
+systemctl restart tuned
+sysctl -a|grep force_igmp
+</file>
+\\
+----
+==== M1 Servers ====
+\\
+This section of code will change the IGMP version on an M1 based Multiplexer from IGMP V3 to IGMP V2.
+<file>
+test -f /etc/tuned/custom/tuned.conf && sed -i -e "s|\(net\.ipv4\.conf\.[^.]*\.force_igmp_version = \)3|\12|" /etc/tuned/custom/tuned.conf
+test -f /etc/tuned/custom/ktuned.sh && sed -i -e "s|do echo 3|do echo 2|" /etc/tuned/custom/ktuned.sh
+sysctl --system
+systemctl restart tuned
+sysctl -a|grep force_igmp
+</file>
+\\
+\\
+----