9. Types and Methods of Load Balancing || F5 Big IP LTM

Summary

This YouTube tutorial from Noor Networks explores various load balancing methods in F5 Big-IP. It distinguishes between static and dynamic load balancing, detailing round robin and ratio-based methods. The video also explains dynamic load balancing techniques like observed and predictive ratios, list connection, and fastest methods. It highlights how static methods ignore server performance, while dynamic ones consider it. The tutorial promises a follow-up on configuring these methods.

Takeaways

• 🔄 **Static vs Dynamic Load Balancing**: Load balancing is categorized into static and dynamic types, with static not considering server performance.
• 🔄 **Round Robin Method**: A static method where client connections are evenly distributed among pool members, regardless of server performance.
• 🔄 **Ratio-Based Load Balancing**: Connections are distributed based on a predefined ratio, with higher ratios receiving more connections.
• 🔄 **Dynamic Ratio-Based Load Balancing**: Requests are distributed based on dynamically assigned ratios, considering server performance.
• 🔄 **Node-Based Load Balancing**: Considers total connections forwarded to a server device, which can be from one or multiple server pools.
• 🔄 **Pool Member-Based Load Balancing**: Focuses only on connections from a specific server pool, application, or service port.
• 🔄 **Least Connection Method**: Connections are sent to the server device with the least number of active connections, considering server performance.
• 🔄 **Fastest Node Method**: Requests are routed to the server device with the fastest response rate, based on active connections.
• 🔄 **Administrative Control**: In static methods, admins can define ratio values, while dynamic methods assign these values automatically based on performance.
• 🔄 **Upcoming Tutorials**: Future tutorials will cover the configuration of these load balancing methods step by step.

Q & A

What are the two main types of load balancing discussed in the video?

The two main types of load balancing discussed are static load balancing and dynamic load balancing.

How is static load balancing different from dynamic load balancing?

Static load balancing does not consider the server device performance and sends requests irrespective of the device's condition. Dynamic load balancing, on the other hand, considers the server device performance when distributing requests.

What are the subcategories of static load balancing mentioned in the script?

The subcategories of static load balancing mentioned are round robin load balancing and ratio-based load balancing.

What does round robin load balancing involve?

Round robin load balancing involves distributing client connections evenly and alternately among all the pool members of the server pool.

What are the three different methods of dynamic load balancing discussed?

The three different methods of dynamic load balancing discussed are list connection, fastest, and ratio.

How does ratio-based dynamic load balancing work?

Ratio-based dynamic load balancing works by distributing client requests based on dynamically assigned ratio values, with higher ratio values receiving more connections.

What is the difference between ratio observed and ratio predictive in dynamic load balancing?

In ratio observed, the ratio value assigned is 3 to 2, whereas in ratio predictive, it is 4 to 1. The difference lies in the ratio values assigned to servers with fewer and more connections.

What does 'list connection' load balancing method imply?

In the 'list connection' method, client connections are distributed to the server device with the least number of connections.

How does the 'fastest' load balancing method distribute client connections?

The 'fastest' load balancing method distributes client connections to the server device with the fastest response rate, typically the one with fewer active connections.

What does load balancing based on node consider?

Load balancing based on node considers the total connection forwarded to the server device, which can be from one server pool or multiple server pools.

What is the difference between load balancing based on node and pool member?

Load balancing based on node considers total connections from all server pools, while load balancing based on pool member considers only connections from a specific server pool.