Which FHRP implementation is a Cisco proprietary protocol that supports IPv4 load sharing?

The Cisco 200-301 Exam is a key certification test for CCNA, covering networking fundamentals, security, automation, and more. Study4Pass offers top-tier resources practice tests, expert guides, and exam strategies to help you pass confidently. With Study4Pass, master Cisco concepts quickly and ace the 200-301 exam on your first try!

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01 May 2025

Which FHRP implementation is a Cisco proprietary protocol that supports IPv4 load sharing?

Introduction to Cisco 200-301 Exam

The Cisco Certified Network Associate (CCNA) 200-301 exam is one of the most prestigious entry-level certifications in the IT networking field. It’s designed to test your knowledge and skills related to networking fundamentals, IP services, security fundamentals, automation, and programmability.

Why is the 200-301 important?

It validates your ability to install, configure, operate, and troubleshoot medium-size routed and switched networks. With the ever-evolving network landscape, earning the CCNA certification ensures that you're ready for both current and emerging technologies.

The exam includes a wide variety of topics such as:

  • Network fundamentals

  • Network access

  • IP connectivity

  • IP services

  • Security fundamentals

  • Automation and programmability

Among these, one of the crucial topics that often challenges candidates is Cisco’s proprietary First Hop Redundancy Protocols (FHRPs)—an essential concept for ensuring high availability and network resiliency.

This is where Study4Pass proves invaluable. With our updated and exam-focused resources, including real-world scenarios, practice questions, and topic-based exam prep practice test, you get to understand each FHRP in detail—and more importantly, why certain protocols like GLBP outperform others in IPv4 load sharing.

Cisco’s Proprietary FHRP with IPv4 Load Sharing

First Hop Redundancy Protocols (FHRPs) are critical in enterprise networks to provide gateway redundancy and maintain network availability. Cisco offers multiple proprietary FHRPs, including:

  1. HSRP (Hot Standby Router Protocol)

  2. VRRP (Virtual Router Redundancy Protocol) - though originally standardized, Cisco includes proprietary features

  3. GLBP (Gateway Load Balancing Protocol)

These protocols aim to solve a common networking problem: “What happens if the default gateway fails?” FHRPs allow multiple routers to share a virtual IP address, ensuring that if one router goes down, another can take over seamlessly.

But not all FHRPs are created equal—especially when it comes to load sharing. Most protocols offer redundancy, but only GLBP offers both redundancy and load balancing by design.

At Study4Pass, we understand the significance of this topic, and we cover it in detail through our meticulously designed learning resources. Our materials don’t just scratch the surface—we explain how each protocol works, their advantages and disadvantages, and when to use them.

How GLBP Works

GLBP (Gateway Load Balancing Protocol) is Cisco’s answer to combining redundancy with intelligent traffic distribution. Unlike HSRP and VRRP, which elect an active and standby router (where the standby remains idle unless needed), GLBP allows multiple routers to actively forward packets simultaneously.

Key Components of GLBP:

  1. Virtual IP Address: Shared among a group of routers (up to four active routers).

  2. AVG (Active Virtual Gateway): One router is elected as the AVG, which assigns virtual MAC addresses to other routers in the group.

  3. AVFs (Active Virtual Forwarders): The other routers in the group that are assigned a virtual MAC address and actively forward traffic.

Load Balancing Mechanism

GLBP supports several load balancing methods:

  • Round-robin: Traffic is distributed evenly.

  • Weighted: Traffic is distributed based on configured weights.

  • Host-dependent: Each client uses the same virtual MAC address once assigned.

Benefits of GLBP

  • Active-active redundancy: Unlike HSRP, all routers in the group can forward packets.

  • Client-side load distribution: Different hosts can be assigned different routers, balancing traffic effectively.

  • Failover and recovery: If an AVF fails, another can take its place without interrupting network services.

Example Scenario

Imagine a company with two routers connected to the internet. Without GLBP, one router might be idle while the other handles all the traffic. But with GLBP:

  • Both routers are used.

  • If one fails, the other continues to serve users.

  • Clients are automatically directed to an available router without manual intervention.

Study4Pass provides detailed diagrams, command-line examples, and configuration labs that simulate these real-world scenarios. You don't just learn what GLBP is—you learn how it works, when to use it, and how to implement it on exam day.

Why GLBP is the Best Answer for IPv4 Load Sharing

There’s a reason Cisco designed GLBP: they needed a protocol that offered both redundancy and intelligent load sharing—something HSRP and VRRP couldn’t provide.

Here’s why GLBP stands out:

1. True Load Balancing

HSRP and VRRP only allow one active router. GLBP lets multiple routers forward traffic, which optimizes bandwidth usage and improves performance.

2. Efficient Resource Utilization

In traditional FHRPs, backup routers remain idle. GLBP avoids this inefficiency by keeping all routers active and distributing the load.

3. Scalability

GLBP can support up to four active routers in a group, offering flexibility in large networks with high traffic demands.

4. Built-in Redundancy

If an AVF fails, the AVG reassigns its virtual MAC to another AVF. This seamless failover ensures high availability without user interruption.

5. Simple Configuration

GLBP configuration is straightforward for anyone familiar with HSRP/VRRP:

bash
interface GigabitEthernet0/0 ip address 192.168.1.2 255.255.255.0 glbp 1 ip 192.168.1.1 glbp 1 priority 120 glbp 1 preempt glbp 1 load-balancing round-robin

6. Ideal for IPv4 Load Sharing

Since GLBP uses virtual MACs per router, it distributes traffic at Layer 2, making it ideal for IPv4 environments where routing decisions at the gateway are crucial.

With Study4Pass, you’ll receive real-world examples, hands-on configuration tutorials, and practice questions specifically designed to help you identify GLBP as the correct answer in load sharing scenarios.

Final Exam Preparation Tips

Succeeding in the Cisco 200-301 exam requires a blend of theory, practice, and strategic preparation. Here’s how Study4Pass makes your journey easier and more efficient:

1. Use Updated Study Materials

Our exam prep practice test, practice exams, and study guides are aligned with the latest Cisco exam blueprint. We continuously update our content based on feedback and real exam takers' experiences.

2. Practice with Realistic Exam Questions

Study4Pass offers a huge collection of practice questions that reflect the actual format and difficulty level of the Cisco 200-301 exam. Many of our questions focus on identifying correct FHRPs and explaining why GLBP is preferred.

3. Understand, Don’t Memorize

We encourage conceptual clarity. Our detailed explanations ensure that you understand the why behind every answer.

4. Join the Community

Interact with thousands of other learners in the Study4Pass forums. Discuss difficult questions, get answers, and stay motivated with a community that shares your goal.

5. Simulate Exam Conditions

Use our timed practice exams to build your confidence. Knowing how to manage your time and handle exam pressure is half the battle.

6. Focus on High-Weight Topics

Some areas carry more weight in the exam. We help you identify these and offer intensive coverage—FHRPs like GLBP being a prime example.

Conclusion

The Cisco 200-301 exam is your gateway to a successful career in networking, and mastering topics like GLBP can significantly boost your chances of passing with a high score. GLBP’s unique combination of redundancy and load balancing makes it the ideal FHRP for IPv4 networks, and it’s a concept Cisco loves to test on.

With Study4Pass, you're not just memorizing answers—you’re learning to think like a network engineer. Our comprehensive materials, real exam questions, detailed explanations, and community support ensure you’re 100% prepared on exam day.

Don’t leave your success to chance. Join the thousands who’ve passed with Study4Pass and start your journey toward Cisco certification today.

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Sample Questions For Cisco 200-301 Practice Test

Which Cisco proprietary FHRP protocol supports IPv4 load balancing?

a) VRRP
b) HSRP
c) GLBP
d) IRDP

What is the primary advantage of GLBP over HSRP?

a) Supports IPv6
b) Allows multiple active gateways for load sharing
c) Uses less bandwidth
d) Is an open standard

Which FHRP protocol is Cisco-proprietary and enables per-host load balancing?

a) VRRPv2
b) HSRPv1
c) GLBP
d) BFD

GLBP is an open standard protocol like VRRP.

a) True
b) False