AM620-Q1: Process to assign static IP addresses.

Jim Meyer

Part Number: AM620-Q1

Tool/software:

What is the process to assign static addresses to each ethernet port? I was at a customer site and I wasn’t able to ping using a direct ethernet cable (however, they did not have a cross over cable for me to use). I assigned an IP using ifconfig eth0 192.168.1.1 (for example). After this command I again executed “ifconfig” and eth0 seem to be assigned 192.168.1.1 but I was not able to “ping”. Do I need to disable “auto-negotiate” and if so, what is the best way to do that?

The ethernet ports work perfectly on our network when they auto-negotiate an IP.

12 days ago

+1 Nick Saulnier 12 days ago

TI__Guru* 85825 points

Hello Jim,

In this response, I will just be talking about manually setting a static IP address for debugging. Setting a static IP address for general runtime is different steps.

Setting a static IP for debug

I actually only use static IP addresses for my local network between my Linux PC and the EVMs.

First, everything needs to be on the same subnet (e.g., 192.168.1.x in your case).

I set my linux PC to be 192.168.1.100

And then I set the EVM port like this:

root@am62xx-evm:~# uname -a
Linux am62xx-evm 6.6.32-g6de6e418c80e-dirty #1 SMP PREEMPT Thu Oct 24 17:56:25 CDT 2024 aarch64 GNU/Linux

// let's double check with port is getting TX and RX packets from the PC
// it should be eth0 from the earlier terminal output
root@am62xx-evm:~# [592897.955621] am65-cpsw-nuss 8000000.ethernet eth0: Link is Up - 1Gbps/Full - flow[2/8080]
 rx/tx

root@am62xx-evm:~# ifconfig -a
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::1e63:49ff:fe0f:6d12  prefixlen 64  scopeid 0x20<link>
        ether 1c:63:49:0f:6d:12  txqueuelen 1000  (Ethernet)
        RX packets 1  bytes 335 (335.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 19  bytes 3127 (3.0 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

eth1: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        ether a6:33:b4:28:51:cd  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 8  bytes 1158 (1.1 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 8  bytes 1158 (1.1 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

// bring the port down
root@am62xx-evm:~# ifconfig eth0 down
[592991.236158] am65-cpsw-nuss 8000000.ethernet eth0: Link is Down

// bring the port back up, and initialize it with the static IP
root@am62xx-evm:~# ifconfig eth0 192.168.1.162
[593001.874024] am65-cpsw-nuss 8000000.ethernet eth0: PHY [8000f00.mdio:00] driver [TI DP83867] (irq=POLL)
[593001.883457] am65-cpsw-nuss 8000000.ethernet eth0: configuring for phy/rgmii-rxid link mode
root@am62xx-evm:~# [593004.963618] am65-cpsw-nuss 8000000.ethernet eth0: Link is Up - 1Gbps/Full - flow control
 rx/tx

// now we can communicate
root@am62xx-evm:~# ping 192.168.1.100
PING 192.168.1.100 (192.168.1.100) 56(84) bytes of data.
64 bytes from 192.168.1.100: icmp_seq=1 ttl=64 time=0.472 ms
64 bytes from 192.168.1.100: icmp_seq=2 ttl=64 time=0.284 ms
64 bytes from 192.168.1.100: icmp_seq=3 ttl=64 time=0.276 ms
^C
--- 192.168.1.100 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2031ms
rtt min/avg/max/mdev = 0.276/0.344/0.472/0.090 ms

Regards,

Nick

0 Jim Meyer 8 days ago in reply to Nick Saulnier

Intellectual 400 points

Nick,

OK! I'll follow up when I've tried it! Thanks!

Thanks!

+1 Jim Meyer 8 days ago in reply to Jim Meyer

Intellectual 400 points

Nick,

That did the trick! Thanks!

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AM620-Q1: Process to assign static IP addresses.