350-401 · Question #561
By default, which virtual MAC address does HSRP group 16 use?
The correct answer is B. 00:00:0c 07:ac:10. HSRP uses a specific virtual MAC address format, with the last octet representing the HSRP group number, meaning HSRP group 16 uses the MAC address 00:00:0c:07:ac:10.
Question
Options
- Ac0:41:43:64:13:10
- B00:00:0c 07:ac:10
- C00:05:5c:07:0c:16
- D05:00:0c:07:ac:16
How the community answered
(26 responses)- B88% (23)
- C4% (1)
- D8% (2)
Why each option
HSRP uses a specific virtual MAC address format, with the last octet representing the HSRP group number, meaning HSRP group 16 uses the MAC address 00:00:0c:07:ac:10.
This MAC address does not conform to the standard HSRP virtual MAC address format.
The default virtual MAC address for HSRP is in the format 0000.0C07.ACxx, where 'xx' represents the HSRP group number in hexadecimal. For HSRP group 16 (decimal), the hexadecimal equivalent is 10, thus resulting in 00:00:0c:07:ac:10.
This MAC address does not conform to the standard HSRP virtual MAC address format and the group number '16' is incorrectly placed and represented.
This MAC address does not conform to the standard HSRP virtual MAC address format, as the vendor prefix and group number representation are incorrect.
Concept tested: HSRP virtual MAC address format
Source: https://www.cisco.com/c/en/us/td/docs/ios/12_2/ip/configuration/guide/fipr_c/fcfhsrp.html
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