how does the bonding inteface get mac address on linux

It does not matter whether the interface eth1 on PC2 is up or down. Thus, following the example above, if I disable eth1 on PC2, traffic will being sent, even though there is an interface disabled. Sometimes, I notice that all traffic is placed on the same slave ( for example, from PC1 to PC2, all traffic will be placed on eth2 of PC2 ). But, my problem starts here, due to I can't understand how the kernel selects an interface or other. So, when the driver bonding is loaded, I can see 3 interfaces (bond0, eth1 and eth2) on each PC (eth1 and eth2 are slaves).

On each computer, I have installed two NIC's (Network cards). Now, I will describe my doubt with all details:Īt my private lab, I have 2 computers (PC1 and PC2, running linux/ubuntu) with 4 NIC's. My main question is: How can I select an active slave or other to send traffic from a peer to other peer? Because the option xmit_hash_policy is unclear! I understand how all modes work, except the mode 2(balance-xor) and 4(802.3ad). I'm trying to understand the operation of all modes (Mode 0, 1, 2, 3, 4, 5 and 6). I'm trying to understand how to select the properly mac address, when I use bonding, in the mode 2 (Balance XOR - default option layer2). So, I will try rewrite the question, explaining all details. A few days ago, I wrote a question here, but that question was ambiguous.

How does the bonding inteface get mac address on linux