Solved

Benefit of F5 BigIP Local Traffic Manager

Posted on 2011-03-02
2
506 Views
Last Modified: 2012-06-21
Hello Experts,

We are in the middle of choosing the right F5 product for our hosted services we provide to our customers.

LTM (local traffic manager) is one of the features that I am not so sure about. I know it mainly provides load balancing, but what makes it so different from for example Windows load balancing. What benefits does LTM give me for my environment?

Your kind input and advice will be much appreciated.

Jimmy
0
Comment
Question by:jimmy1829
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
2 Comments
 
LVL 5

Accepted Solution

by:
torvir earned 500 total points
ID: 35024935
There are a few big differences. I list some of the most important from the top of my head, that made us choose F5.
- Scalability. F5 doesn't have the limit of 8 servers as windows NLB has.
- SSL offload. If you have a https service you can make the F5 take care of SSL, which it does really well. The servers runs ordinary http and don't have to care about encryption to spare the load of the CPU.
- NLB loadbalancing works in a way where all requests to a server is sent to all servers in the serverfarm, or even to all servers in the same subnet, depending on which method you use. This isn't a good solution in big datacenters where the servers are spread out in the switch network for renundancy. That results in unnecessary network load on links in the datacenter, and in worst case, unnecessary load on the NIC:s of other servers.
This is the main reason for us to choose an external loadbalancer from start.
- Full control of traffic flows. You can controll the traffic to the servers in almost every way you can think of thanks to F5 iRules which is a relativly simple but powerful programming language.
0
 
LVL 5

Expert Comment

by:torvir
ID: 35055666
I read an article on MS technet today and learned two useful things about the drawbacks of WNLB.
-WNLB can't test if certain services are up and running on the servers. If the IP address is alive WNLB is happy.
  F5 on the other hand can do tests on protocols, on specific url:s, try to log in and much more.
  This is a very important function that by itself would have made me coose something other than WNLB.
-WNLB can do source IP affinity while F5 can do that and a few more persistence moethods. Like cookie-insert, cookie-learning, SSL-session... and more.
0

Featured Post

What is SQL Server and how does it work?

The purpose of this paper is to provide you background on SQL Server. It’s your self-study guide for learning fundamentals. It includes both the history of SQL and its technical basics. Concepts and definitions will form the solid foundation of your future DBA expertise.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Short answer to this question: there is no effective WiFi manager in iOS devices as seen in Windows WiFi or Macbook OSx WiFi management, but this article will try and provide some amicable solutions to better suite your needs.
During and after that shift to cloud, one area that still poses a struggle for many organizations is what to do with their department file shares.
Viewers will learn how to connect to a wireless network using the network security key. They will also learn how to access the IP address and DNS server for connections that must be done manually. After setting up a router, find the network security…
There's a multitude of different network monitoring solutions out there, and you're probably wondering what makes NetCrunch so special. It's completely agentless, but does let you create an agent, if you desire. It offers powerful scalability …
Suggested Courses

615 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question