07-15-2019 04:53 PM
Hi guys,
I am doing practice questions to make sure what i have learnt is enough for my ccnp switch exam, and i may be wrong in this one.
But from what i learnt in HSRP v1, that the the last 2 hexi decimal is the HSRP group
And in one of the questions it mentions:
"Which virtual MAC address does HSRP group 37 USE with default configuration?
A. 00:00:c:07ac:25
B. 00:00:c:07ac:37
C. 00:00:c:37:00:00
D. 00:00:c:25:00:00
Answer: A"
Now i am confused as to why the answer is A and not B.
Please advise
Thanks
07-15-2019 05:05 PM
Hi AFO99,
The mac address numbers are in hex. But HSRP groups are defined in Decimal.
so Decimal HSRP group 37 = 25Hex
37/16 = 2R5 = 25Hex.
"A" is correct
07-15-2019 05:29 PM
hi afo99,
As you know that HSRP uses this virtual MAC address, 0000.0C07.ACxy, where xy is the HSRP group number in hexadecimal.
so your HSRP group no is 37 which is in a decimal format so we need to change it into hexadecimal
37 = 0010 0101 binary
0010 0101 = 25 hex
so by this process, for HSRP Group 37 the Mac address will be : 00:00:c:07ac:25
07-15-2019 05:32 PM - edited 07-15-2019 05:34 PM
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