Cisco Certified Network Associate (CCNA) Practice Exam 2025 - Free CCNA Practice Questions and Study Guide

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What multicast address does GLBP use for its hello messages?

224.0.0.100

224.0.0.102

GLBP (Gateway Load Balancing Protocol) uses the multicast address 224.0.0.102 for its hello messages. This address is designated specifically for routing protocols that facilitate communication among routers in a local area network.

In the context of GLBP, sending hello messages to this multicast address allows the connected routers to participate in the GLBP group and determine which router will act as the active virtual gateway and which will serve as backups. The protocol helps in load balancing and redundancy, ensuring that if the primary router fails, a backup can take over seamlessly.

This multicast address is crucial for the proper operation of GLBP and is utilized to minimize the traffic on a network by enabling multiple routers to receive and process the same packets of information.

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224.0.0.105

224.0.0.110

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