On 28/06/13 10:58, Tóth András wrote:
Manually looking at the MAC/ARP table is not flawed much more than relying
on ACL logging to print out the MAC because if it comes through a router,
both will display the router MAC anyway.

Routing is *not* symmetric, and interfaces can have >1 router at the other end. Hence, source MAC is valuable.

This is to say nothing of source-spoofed traffic from directly attached layer2.

So yes, in fact, logging is superior to looking at the MAC/ARP table.
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