Hi, I'm on a IMX8 platform and have a Microchip KSZ9567 Ethernet switch. I can use IP commands to manually bring lan1 and lan2 interfaces up and then create a redundant/failover bond ... but I'm having difficulty figuring out how to do this the "systemd" way.
My first attempt was to just have systemd run a script of all the commands I do manually but during system startup there appears to be race conditions so I have to set my service type to "Idle" and sometimes even that doesn't work. So I want to exploit any systemd support for DSA and bonding. Here is script my manual steps which is what I want systemd to ultimately do: #!/bin/bash # Create a redundant bond between ksz9567 DSA lan1 and lan2 interfaces # Load bonding kernel module modprobe bonding # Bring up CPU interface (cpu to switch port 7 - the RGMII link) ip link set eth0 up # Create a bond echo +bond0 > /sys/class/net/bonding_masters # Set mode to active-backup (redundancy failover) echo active-backup > /sys/class/net/bond0/bonding/mode # Set time it takes (in ms) for slave to move when a link goes down echo 1000 > /sys/class/net/bond0/bonding/miimon # Add slaves to bond echo +lan1 > /sys/class/net/bond0/bonding/slaves echo +lan2 > /sys/class/net/bond0/bonding/slaves # Set IP and netmask of the bond ip addr add 192.168.0.4/24 dev bond0 # And bring bond up. Pings and network connectivity should work now ip link set bond0 up # For a board that doesn't have Ethernet switch hardware strapped to enable at boot .. enable it now i2cset -f -y 0 0x5f 0x03 0x00 0x01 i Thanks for any information, pointers etc. Regards, Brian
