The STKLS1028A provides one 4 Port TSN Gbit Ethernet Switch and two 10/100/1000 Ethernet Interfaces.
The TSN switch of the STKLS1028A is not configured by default. The master interface eno2 is enabled by default, so it is not necessary to bring it up manually.
Every single switch port acts as a configurable Ethernet port
# Configure each single switch interface and bring it up. $ ip addr add 192.168.1.2 dev swp0 && ip link set swp0 up $ ip addr add 192.168.1.3 dev swp1 && ip link set swp1 up $ ip addr add 192.168.1.4 dev swp2 && ip link set swp2 up $ ip addr add 192.168.1.5 dev swp3 && ip link set swp3 up
Every switch port is part of one configurable Ethernet bridge.
# Create a bridge device in this example it is called switch $ ip link add name switch type bridge # Bring up the bridge device $ ip link set switch up # Add the interfaces to the bridge device switch and bring them up. $ ip link set swp0 master switch && ip link set swp0 up $ ip link set swp1 master switch && ip link set swp1 up $ ip link set swp2 master switch && ip link set swp2 up $ ip link set swp3 master switch && ip link set swp3 up # Configure bridge device $ ip addr add 192.168.1.2 dev switch
In U-Boot enetc-1 is configured as default interface. The IP configuration can be done statically or by a DHCP server in the network.
IP configuration via DHCP
For a configuration via a DHCP server, use the dhcp command in U-Boot.
Static IP configuration For a static IP configuration the following, U-Boot environment variables must be set:
setenv ipaddr <ipaddr> (e.g.: setenv ipaddr 192.168.100.111) setenv netmask <netmask> (e.g.: setenv netmask 255.255.255.0)
Both Ethernet Interfaces, eno0 and eno1, are activated in Linux.
For a temporary static configuration the ip command can be used, below some useful ip commands are listed:
Activate a specific interface
e.g. eno1
ip link set eno1 up
Disable a specific interace
e.g. eno1
ip link set eno1 down
Show ip address for a specific interface
e.g. eno1
ip addr show eno1
Show statistic for a specific interface
e.g. eno1
ip -s link show eno1
Set ip address for a specific interface
e.g. eno1
ip addr add 192.168.1.100/24 dev eno1
Show statistic of all interfaces
ip -s link
Set default gateway for a specific interfaces
e.g. set gateway ip 192.168.1.1 for eno1
ip route add default via 192.168.1.1 dev eno1
If a DHCP server is available in the network environment the ip configuration can be received from it. To do so execute the udhcpc command, by default eth0 is used.
To configure another interface via dhcp the parameter -i followed by the interface name e.g. eno1 must be given.
e.g. eno1
udhcpc -i eno1