CLI commands to change interface throughput speed down to 100 mbp on SRX300 series .

Sometimes we need to reduce the throughput speed on one interface on the SRX300 series Firewall to 100 mbp for example.

From configuration mode we can run root@# set interface-name speed 100m

Also there are 3 available options for speed (100m | 10m | 1g)

https://www.juniper.net/documentation/us/en/software/junos/cli-reference/topics/ref/statement/speed-edit-interfaces-ethernet.html