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If the VRID of a HA pair is configured as 25. Which MAC address is most likely used for the virtual IP address?
Suggested Answer: B
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Comprehensive and Detailed In-Depth
VRRP defines the virtual MAC for the VIP:
Format: 00:00:5E:00:01:XX, where XX is the VRID (1-255) in hex.
VRID 25: Decimal 25 = Hex 19. Thus, MAC is 00:00:5E:00:01:19.
Options:
A: 25 is decimal, not hex---incorrect conversion. Incorrect.
B: Correctly uses hex 19 for VRID 25. Correct.
C: Random, non-VRRP format. Incorrect.
D: Multicast format, not VRRP. Incorrect.
Practical Example: In an INE lab, you'd configure VRID 25, capture VRRP packets, and verify 00:00:5E:00:01:19, troubleshooting HA.
27 comments · newest first
AN
Antonio
5 months ago
I'm leaning towards B. It seems like a safe choice.
RE
Reena
5 months ago
A makes sense. It's the standard for virtual IPs.
KR
Kristine
5 months ago
I feel like D could be right too. It has the right structure.
AD
Adelina
6 months ago
I think it's A. The format matches the VRID.
DA
Danilo
6 months ago
I thought it could be D) at first, but A) makes more sense.
LO
Louvenia
6 months ago
B) doesn't even match the VRID format, right?
KR
Kristine
6 months ago
Wait, are we sure about that? Seems too straightforward.
RO
Roslyn
6 months ago
I agree, that MAC format fits perfectly!
MI
Minna
6 months ago
It's definitely A) 00-00-5E-25-01-00.
DO
Dorethea
7 months ago
D) 01-00-5E-7F-FF-25 - wait, is that the MAC address for the Dark Side of the Force?
JO
Jose
7 months ago
A) 00-00-5E-25-01-00 is the way to go. Anything else would just be guessing.
CH
Charlette
7 months ago
C) 19-80-C2-00-00-03 is just a random MAC address, it doesn't seem related to the VRID at all.
GL
Glory
8 months ago
B) 00-00-5E-00-01-19 seems a bit off. The VRID is 25, so the last two octets should reflect that.
BR
Brittni
8 months ago
D) 01-00-5E-7F-FF-25 looks like a good option. It has the 01-00-5E prefix for multicast MAC addresses.
CA
Candida
8 months ago
A) 00-00-5E-25-01-00 is the correct answer. This is the standard MAC address format for a VRRP virtual IP address.
TA
Tamar
8 months ago
I think the answer might be D because it seems to follow the multicast MAC address pattern, but I need to double-check that.
AL
Alysa
8 months ago
I feel like option A could be correct since it has the right structure for a VRID, but I’m not 100% confident.
MO
Moira
8 months ago
I remember practicing a similar question where the MAC address was derived from the VRID, but I can't recall the exact format.
MA
Martha
9 months ago
I think the MAC address for the virtual IP might be related to the VRID, but I'm not completely sure how that works.
AN
Antonio
9 months ago
A seems like the logical choice given the VRID of 25. I'm pretty confident that's the correct answer.
EL
Elmira
9 months ago
I'm a bit confused on how the VRID maps to the MAC address. I'll need to think this through carefully.
LO
Lonna
9 months ago
Okay, I think I've got this. The virtual MAC address is based on the VRID, so A has to be the right answer.
CY
Cyndy
9 months ago
Hmm, I'm not totally sure about this one. I'll need to review the VRRP MAC address format again.
HA
Hayley
10 months ago
This one seems pretty straightforward. I'd go with option A since the VRID is 25.
MA
Marylou
3 months ago
Definitely option A, it's clear cut!
DO
Domonique
3 months ago
Yeah, the VRID directly relates to the MAC.
LE
Lettie
4 months ago
I agree, option A makes the most sense.