--- title: F5 Global Server Load Balancing (GSLB) Reviews meta_title: 'F5 Global Server Load Balancing (GSLB) Reviews 2026: Details, Pricing, & Features | G2' meta_description: Filter reviews by the users' company size, role or industry to find out how F5 Global Server Load Balancing (GSLB) works for a business like yours. aggregate_rating: rating_value: 4.6 review_count: 7 scale: '5' date_modified: '2026-09-22' parent_category: name: Hosting url: https://www.g2.com/categories/hosting --- # F5 Global Server Load Balancing (GSLB) Reviews **Vendor:** F5 **Category:** [Load Balancing Software](https://www.g2.com/categories/load-balancing) **Average Rating:** 4.6/5.0 **Total Reviews:** 7 ## About F5 Global Server Load Balancing (GSLB) F5® BIG-IP® DNS global server load balancing solutions for enterprise and services providers alike, distributes DNS and user application requests based on business policies, data center and cloud service conditions, user location, and application performance. The BIG-IP platform delivers F5’s high-performance DNS services with visibility, reporting, and analysis; hyperscales and secures DNS responses geographically to survive DDoS attacks; delivers a real-time DNSSEC solution; and ensures high availability of global applications in all cloud environments. F5 provides a hyper-scale and secure DNS solution for service providers that provides faster web browsing and reduced latency. This improves subscriber’s user experience and leads to reduced churn and increased revenues. Visibility into DNS and applications means that their health, optimization and protection can be maximized. ## F5 Global Server Load Balancing (GSLB) Pros & Cons Pros and Cons are compiled from review feedback and grouped into themes to provide an easy-to-understand summary of user reviews. **What users like:** - Users appreciate the **seamless integration** of F5 BIG-IP DNS with other solutions for optimized application management. (1 reviews) - Users praise the **fast processing and throughput** of F5 GSLB, outperforming other DNS devices in performance. (1 reviews) - Users admire the **high processing speed** and throughput of F5 Global Server Load Balancing compared to other DNS devices. (1 reviews) - Users appreciate the **fast request processing** of F5 Global Server Load Balancing compared to other DNS devices. (1 reviews) - Users value the **seamless integration** of F5 Global Server Load Balancing with various F5 solutions for optimized application management. (1 reviews) **What users dislike:** - Users find the **high costs** of F5 Global Server Load Balancing a significant barrier, especially for smaller organizations. (2 reviews) ## F5 Global Server Load Balancing (GSLB) Reviews ### 1. F5-DNS **Rating:** 5.0/5.0 stars **Reviewed by:** Muthu K. | Senior Network Architect & design Specialist, Enterprise (> 1000 emp.) **Validated Reviewer:** Validated through LinkedIn **Source: G2 invite:** Invitation from G2. This reviewer was not provided any incentive by G2 for completing this review. **Reviewed Date:** November 28, 2023 **What do you like best about F5 Global Server Load Balancing (GSLB)?** The F5 hardware & software solid capability and processing the request and throughput is very fast compared to other DNS devices. **What do you dislike about F5 Global Server Load Balancing (GSLB)?** The price is too high compared to other DNS devices in the market. Frequent release of software makes it hard to maintain up to the mark. **What problems is F5 Global Server Load Balancing (GSLB) solving and how is that benefiting you?** F5-DNS resolves our applications' access for users spread across the globe. F5-DNS provides very fast and robust access to users by using global traffic management route capabilities. F5-DNS secures applications using the DNSSEC feature from vulnerabilities. ### 2. Best GSLB **Rating:** 5.0/5.0 stars **Reviewed by:** Ümit G. | Senior Information Technology Security Consultant, Mid-Market (51-1000 emp.) **Validated Reviewer:** Validated through LinkedIn **Source: G2 invite:** Invitation from G2. This reviewer was not provided any incentive by G2 for completing this review. **Reviewed Date:** October 24, 2023 At G2, we prefer fresh reviews and we like to follow up with reviewers. They may not have updated their review text, but have updated their review. **What do you like best about F5 Global Server Load Balancing (GSLB)?** You can integrate F5 BIG-IP DNS seamlessly with other F5 solutions, creating a comprehensive application delivery and security ecosystem. This integration allows for a comprehensive approach to managing and optimizing applications. **What do you dislike about F5 Global Server Load Balancing (GSLB)?** F5 products, including BIG-IP DNS, are often considered expensive. The cost of licenses, hardware, and support services can be a significant factor for organizations, especially smaller ones. **What problems is F5 Global Server Load Balancing (GSLB) solving and how is that benefiting you?** F5 BIG-IP DNS includes features to mitigate DNS-based attacks solve DNS attacks to our DNS servers. ### 3. F5 takes care of business **Rating:** 4.0/5.0 stars **Reviewed by:** David L. | IT Systems Engineer, Education Management, Enterprise (> 1000 emp.) **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** Validated through Google One Tap using a business email account **Incentivized:** This reviewer was offered a nominal gift card as thank you for completing this review. **Source: G2 invite:** Invitation from G2. This reviewer was offered a nominal gift card as thank you for completing this review. **Reviewed Date:** April 04, 2023 At G2, we prefer fresh reviews and we like to follow up with reviewers. They may not have updated their review text, but have updated their review. **What do you like best about F5 Global Server Load Balancing (GSLB)?** It is an industry standard. It takes care of all our needs in one box. We feel confident in the service it provides. It is easy to manage and makes sense in the setup and management console. **What do you dislike about F5 Global Server Load Balancing (GSLB)?** The only thing that may be a dislike is that it does take a good knowledge of the product to setup. It may not be very intuitive for first time users, and you may need some help with the initial setup. **What problems is F5 Global Server Load Balancing (GSLB) solving and how is that benefiting you?** We needed help setting up and adding some protection for internal resources to be accessible to the outside. We needed a product that could handle some of our more particular older products. ### 4. F5 GTM **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Financial Services | Enterprise (> 1000 emp.) This reviewer's identity has been verified by our review moderation team. They have asked not to show their name, job title, or picture. **Validated Reviewer:** Validated through LinkedIn **Source: Seller invite:** Invitation from a seller or affiliate. This reviewer was not provided any incentive by G2 for completing this review. **Reviewed Date:** October 08, 2021 At G2, we prefer fresh reviews and we like to follow up with reviewers. They may not have updated their review text, but have updated their review. **What do you like best about F5 Global Server Load Balancing (GSLB)?** Easy to configure GSLB/multiple DC, does most of the DNS resolution function etc **What do you dislike about F5 Global Server Load Balancing (GSLB)?** Some of the complex configurations which aren't straight forward **Recommendations to others considering F5 Global Server Load Balancing (GSLB):** I would definitely recommend others to try F5's BIG IP DNS and other modules **What problems is F5 Global Server Load Balancing (GSLB) solving and how is that benefiting you?** Dual site or multiple DC's ### 5. The best DNS Solution in the market **Rating:** 5.0/5.0 stars **Reviewed by:** Mohammed Shiraz M. | Cyber Security Architecture Senior Specialist, Mid-Market (51-1000 emp.) **Validated Reviewer:** Validated through LinkedIn **Incentivized:** This reviewer was offered a nominal gift card as thank you for completing this review. **Source: G2 invite:** Invitation from G2. This reviewer was offered a nominal gift card as thank you for completing this review. **Reviewed Date:** October 27, 2022 **What do you like best about F5 Global Server Load Balancing (GSLB)?** The global server load balancing with a lot of intelligence behind it is the best feature of F5-DNS **What do you dislike about F5 Global Server Load Balancing (GSLB)?** So far I haven't seen any issues with the solution other than the price which is quite expensive compared to other vendors **What problems is F5 Global Server Load Balancing (GSLB) solving and how is that benefiting you?** GSLB was required and this was achieved by F5-DNS ### 6. One of the best load balancer in the market **Rating:** 4.0/5.0 stars **Reviewed by:** Pradnesh C. | Senior Network Engineer, Enterprise (> 1000 emp.) **Validated Reviewer:** Validated through LinkedIn **Incentivized:** This reviewer was offered a nominal gift card as thank you for completing this review. **Source: G2 invite:** Invitation from G2. This reviewer was offered a nominal gift card as thank you for completing this review. **Reviewed Date:** August 10, 2022 **What do you like best about F5 Global Server Load Balancing (GSLB)?** F5 is the most versatile and easy to manage load balancer I have ever used. **What do you dislike about F5 Global Server Load Balancing (GSLB)?** Nothing as such, works perfectly in my enterprise. **What problems is F5 Global Server Load Balancing (GSLB) solving and how is that benefiting you?** Load balancing application traffic efficiently. ### 7. An Intelligent DNS Resolution & Load Balancing Decisions Maker! **Rating:** 5.0/5.0 stars **Reviewed by:** Anurag J. | Design Architect, Enterprise (> 1000 emp.) **Validated Reviewer:** Validated through LinkedIn **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** February 08, 2022 **What do you like best about F5 Global Server Load Balancing (GSLB)?** The Intelligent DNS Resolution with an excellent iquery protocol technology to monitor the availability. **What do you dislike about F5 Global Server Load Balancing (GSLB)?** None as of now. I highly recommend it as being a web security engineer. GTM in a large enterprise is a bliss! **Recommendations to others considering F5 Global Server Load Balancing (GSLB):** None as of now. **What problems is F5 Global Server Load Balancing (GSLB) solving and how is that benefiting you?** We have been using F5 GTM for a variety of use cases such as, Load Balancing Traffic Across DCs and Different Geo Locations, Managing our proxy servers through GTM to have uninterrupted Internet Access, Using GTM as Authoritative DNS for Internal Infrastructure as well. ## F5 Global Server Load Balancing (GSLB) Discussions - [What is F5 Global Server Load Balancing (GSLB) used for?](https://www.g2.com/discussions/what-is-f5-global-server-load-balancing-gslb-used-for) - [View F5 Global Server Load Balancing (GSLB) pricing details and edition comparison](https://www.g2.com/products/f5-global-server-load-balancing-gslb/reviews?section=pricing&secure%5Bexpires_at%5D=2026-09-30+22%3A26%3A00+-0500&secure%5Bsession_id%5D=31a9433c-6e70-489a-a887-22b11141adfa&secure%5Btoken%5D=cfb3675417644bd3d9ba2e0773376a91d00dc1da96d1a9d1f80cf724e3758ec3&format=llm_user) ## F5 Global Server Load Balancing (GSLB) Features **Usability - Load Balancing** - User Interface Design - Setup Simplicity - Platform Integration - Container Support **Performance Optimization - Load Balancing** - Global Load Balancing - Dynamic Resource Allocation - Server Health Monitoring - Disaster Recovery - Real-Time Monitoring - Health Monitoring - Network Monitoring - Web Traffic Monitoring **Security & Compliance - Load Balancing** - SSL/TLS Termination - Application Firewall Integration - DDoS Mitigation - Access Control - IP Whitelisting/Blacklisting - Access Controls/Permissions - Traffic Control - DDoS Protection - Third-Party Integrations **Additional Functionality** - SSL Decryption - Real-Time Data - Event Logs - Alerts/Notifications - SSL Offload - Content Routing - Schedulers - Automatic Configuration - Secure Data Storage - Activity Dashboard - Content Caching - Real-Time Analytics - Predefined Protocols - API - HTTP Caching - Configuration Management - Performance Metrics - AI Copilot - Multi-Cloud Management - Reporting/Analytics - Data Loss Prevention - Reverse Proxy - Compression - Status Tracking - Authentication - Redundancy Checking - Visual Analytics - Generative AI - Network Provisioning - Remote Monitoring & Management - Load Distribution - User Management - SSL Security ## Top F5 Global Server Load Balancing (GSLB) Alternatives - [HAProxy](https://www.g2.com/products/haproxy/reviews) - 4.7/5.0 (907 reviews) - [Cloudflare Application Security and Performance](https://www.g2.com/products/cloudflare-application-security-and-performance/reviews) - 4.5/5.0 (752 reviews) - [Hostwinds](https://www.g2.com/products/hostwinds/reviews) - 4.9/5.0 (419 reviews)