dual MAC mode and physically plugged cables

trichet christophe

Expert 2025 points

Hello

according to the link (http://processors.wiki.ti.com/index.php/SK_ETH) it is possible to have 2 separate ethernet link :

1) Is it mandatory in this case to have physically the 2 cables plugged on each network interface to make them work ?

2) what is the linux command you send to enter dual MAC mode instead of NAT mode ?

3) what is the kernel configuration to us dual MAC mode ?

Thanks

over 9 years ago

0 Schuyler Patton over 9 years ago

TI__Mastermind 34765 points

Not sure if I follow your question 1. In dual mac mode you will need a cable for each independent interface. In switch mode, only one cable should be used.

2. The command is ifup, for example to bring up eth1 you would type "ifup eth1", this will start a sequence that enables the port, tells the phy to connect and to start a dhcp process. Before dual emac works though your question 3 is required. The example link you are pointing to was intended to demonstrate two different ways to use the second port on the evm-sk board that TI provides.

3. to config configure the kernel for dual mac use depends on which SDK you are using.

For SDK 6.0, a kernel configuration is required

http://processors.wiki.ti.com/index.php/AM335x_CPSW_(Ethernet)_Driver's_Guide#Compiling_kernel

For SDK 7.0 a device tree entry is required, not

http://processors.wiki.ti.com/index.php/Linux_Core_CPSW_User's_Guide#Dual_EMAC_Device_tree_entry

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dual MAC mode and physically plugged cables