UP BROADCAST RUNNING MASTER MULTICAST MTU:1500 Metric:1Įth1 Link encap:Ethernet HWaddr 00:0c:29:3d:f7:35 The bond interface will take the MAC address of one of its slave interfaces: ifconfigīond1 Link encap:Ethernet HWaddr 00:0c:29:3d:f7:35
If your other nodes in the subnet (particularly the router) don't mind this behavior, then it works just fine - typically there will be no issue, but I can imagine some restrictive router security settings taking offense. The transmit load-balancing mode skirts this issue by balancing traffic outbound between interfaces, but by using the interface's MAC address as the source for outbound traffic. Typically, the bond's MAC is used for all traffic, which can cause a MAC flapping condition between two ports on a given switch - each of your switches will see ingressing traffic with the bond's MAC as the source, both from the direct connection to the device, and from the cross-connect to the other switch.
In mode 5, or balance-tlb mode, outgoing traffic uses the MAC address of the slave interface that it's leaving, instead of using the address of the bond interface.
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