350-401 · Question #854
By default, which virtual MAC address does HSRP group 25 use?
The correct answer is D. 00:00:0c:07:ac:19. HSRP virtual MAC addresses are constructed using a specific prefix followed by the HSRP group number in hexadecimal.
Question
By default, which virtual MAC address does HSRP group 25 use?
Options
- A04:30:83:88:4c:19
- B00:00:0c:07:ac:25
- C05:5c:5e:ac:0c:25
- D00:00:0c:07:ac:19
How the community answered
(17 responses)- A6% (1)
- C6% (1)
- D88% (15)
Why each option
HSRP virtual MAC addresses are constructed using a specific prefix followed by the HSRP group number in hexadecimal.
This MAC address does not conform to the standard HSRP virtual MAC address format for any group.
This MAC address would correspond to HSRP group 37 (0x25), not group 25.
This MAC address does not conform to the standard HSRP virtual MAC address format for any group.
HSRP uses a default virtual MAC address format of 00:00:0c:07:ac:XX, where XX represents the HSRP group number in hexadecimal; group 25 in decimal is 19 in hexadecimal, resulting in 00:00:0c:07:ac:19.
Concept tested: HSRP virtual MAC address format
Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipapp_fhrp/configuration/xe-3s/fhrp-xe-3s-book/fhrp-hsrp-v2.html
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