In the hardware address 0000.0c07.ac0av, what does 07.ac represent?
A.
HSRP well-known physical MAC address
B.
Vendor code
C.
HSRP router number
D.
HSRP group number
E.
HSRP well-known virtual MAC address
Explanation:
HSRP code (HSRP well-known virtual MAC address) – The fact that the MAC address is for
an HSRP virtual router is indicated in the next two bytes of the address. The HSRP code is
always 07.ac. The HSRP protocol uses a virtual MAC address, which always contains the
07.ac numerical value.
Reference: Building Cisco Multilayer Switched Networks (Cisco Press) page 268