topic Re: Simultaneously use eth0 and eth1 imx8mp in i.MX Processors

Simultaneously use eth0 and eth1 imx8mp

A_M01 — Wed, 04 Sep 2024 10:43:16 GMT

we are building the image via Yocto in evk
When we try to ping after making the interface (eth0)up and eth1 (up)
Able to ping from eth0 to same domain and eth1 to its same domain
eth1 is connected to laptop and iam able to ping to laptop via shared network

but if i try to ping to 8.8.8.8

root@imx8mp-lpddr4-evk:~#
root@imx8mp-lpddr4-evk:~#
root@imx8mp-lpddr4-evk:~# ping -I eth0 8.8.8.8
PING 8.8.8.8 (8.8.8.8) from 192.168.1.100 eth0: 56(84) bytes of data.
^C
--- 8.8.8.8 ping statistics ---
1 packets transmitted, 0 received, 100% packet loss, time 0ms

root@imx8mp-lpddr4-evk:~# ping -I eth1 8.8.8.8
PING 8.8.8.8 (8.8.8.8) from 10.42.0.47 eth1: 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=113 time=45.2 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=113 time=66.3 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=113 time=31.3 ms

root@imx8mp-lpddr4-evk:~# ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
From 192.168.1.100 icmp_seq=1 Destination Host Unreachable
From 192.168.1.100 icmp_seq=2 Destination Host Unreachable
From 192.168.1.100 icmp_seq=3 Destination Host Unreachable
^C

its pinging from eth0
seems a routing difference

could you please share the patch for kernel version 6.1.36+gce06d21637ef

Re: Simultaneously use eth0 and eth1 imx8mp

Chavira — Thu, 05 Sep 2024 19:51:22 GMT

Hi @A_M01!

Thank you for contacting NXP Support!

That is a normal behavior due to both networks are independent.

You should configure a bridge between the networks or something like that to interconnect via software becase in hardware are independent each one.

Best regards!

Chavira

Re: Simultaneously use eth0 and eth1 imx8mp

A_M01 — Mon, 09 Sep 2024 05:08:06 GMT

Could you provide steps / command which should be implemented to configure bridge since im new to sdk .

Re: Simultaneously use eth0 and eth1 imx8mp

Chavira — Mon, 09 Sep 2024 18:20:30 GMT

Hi @A_M01!

For the moment we don´t have examples for that.

Best Regards!

Chvaira