My L3 switch has ~30 interfaces. If you look at the output below there are two MAC addresses showing in the results of the
show interface command. The hardware address is the same for all interfaces. The physical address is different for each interface.
Assume that an IP address was configured on interface ce1/1. When ce1/1 receives an ARP request for the IP configured on it, which MAC should be used in the ARP reply?
What are the potential issues if I use the hardware address rather than the physical interface address? Is there any standard talking about this situation?
rtr1#sh interface Interface ce1/1 Scope: both Flexport: Breakout Control Port (Active): Break Out Enabled Hardware is ETH Current HW addr: 4c76.2541.a6c1 Physical:4c76.2541.a6f2 Logical:(not set) Interface ce1/2 Scope: both Flexport: Non Control Port (Active) Hardware is ETH Current HW addr: 4c76.2541.a6c1 Physical:4c76.2541.a6f3 Logical:(not set)