By default, which virtual MAC address does HSRP group 22 use?
A. c0:42:01:67:05:16
B. c0:07:0c:ac:00:22
C. 00:00:0c:07:ac:16
D. 00:00:0c:07:ac:22
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C.
Group # is in hex
HSRP:
The HSRP MAC address is in the following format: 0000.0c07.acXX, where XX is the HSRP group number
VRRP:
The MAC address has the following form: 0000.5e00.01XX, where XX is the two-digit hexadecimal group number.
Source: Cisco CCNP Encor training.
0000.0C07.ACxy, where xy is
a hex value representing the
HSRP group number
you might be right.
Some other differences are not really improvements, per se. HSRP version 1 utilizes the MAC address range from 0000.0C07.AC00 through 0000.0C07.ACFF (00 = Group 0, FF = Group 255), while HSRP version 2 utilizes the MAC address range from 0000.0C9F.F000 through 0000.0C9F.FFFF (000 = Group 0, FFF = Group 4095). HSRP version 1 uses the multicast address 224.0.0.2, while HSRP version 2 uses the multicast address 224.0.0.102. HSRP version 1 and version 2 are not compatible and use different packet formats.
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