300-320 · Question #698
Which description of how virtual MAC addresses are assigned to the members of a GLBP group is true?
The correct answer is B. The AVG assigns the addresses. In GLBP (Gateway Load Balancing Protocol), the AVG (Active Virtual Gateway) is the elected master router responsible for coordinating the group. When an AVF (Active Virtual Forwarder) member joins or requests a virtual MAC, the AVG assigns it a unique virtual MAC address (in…
Question
Which description of how virtual MAC addresses are assigned to the members of a GLBP group is true?
Options
- AEach device assigns its own address
- BThe AVG assigns the addresses
- CThe AVF assigns the addresses
- DThe device that has the highest IP address assigns the addresses
How the community answered
(18 responses)- B94% (17)
- C6% (1)
Explanation
In GLBP (Gateway Load Balancing Protocol), the AVG (Active Virtual Gateway) is the elected master router responsible for coordinating the group. When an AVF (Active Virtual Forwarder) member joins or requests a virtual MAC, the AVG assigns it a unique virtual MAC address (in the format 0007.b400.xxyy). The AVG responds to ARP requests and distributes traffic load across members by providing different virtual MACs to different clients. Individual devices do not self-assign addresses (A), AVFs receive addresses rather than assign them (C), and highest-IP-address election applies to AVG election, not MAC assignment (D).
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