Re: [lwip-users] Two ethernet port with one mac address

[borkhuis]

Looking at your setup, the switch might be blocking your transfers, as it
sees the same MAC address on 2 ports. Connecting two ports with the same MAC
address and/or the same IP address to a network is always a bad idea, as you
don't know what might be happening. 

Is the PHY connected to two separate network ports, or is it a 2-port switch
connected to one network port of your processor? 

Regards,
Johan


vrnud wrote
> Hi,
> 
> I am new to lwip.
> basic:
> 1) I have two ethernt port.(external word interface)
> 2) Only one ip address is assigned to both the port.
> 3) RMII interface is used.(3rd port which is going to controller).
> 
> Set up:
> 1) Both ports are connected to external ethernet switch.
> 2) PC is connected to ethernet switch.
> 
> when only one port of DUT (device under test) is connected to ethernet
> switch; pinging from pc on individual port is working fine.
> 
> Problem:
> when both the ports of DUT (device under test) is connected to ethernet
> switch; ping is not working.
> 
> 
> 
> 
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