Solved

Load Balancer and  VIP setup Question:  Roundrobin, Hash, Leastconn, or Minmiss?

Posted on 2008-06-16
5
1,049 Views
Last Modified: 2010-04-21
I'm consulting as project manager and setting up several membership websites which are expected to be heavy traffic.

The hosting company has posed a few of questions and I'm not quite sure how to respond.

First which servers are to be load-balanced?  (I assume our "web servers" not content or development servers.)

Second, they want me to select a public IP address or VIP address.  I wasn't aware one could choose, but since I must, how do I?

Last,  do I have the web servers added to a cluster and have them "roundrobin, hash,  leastconn, or minmiss?"
0
Comment
Question by:joshua731
  • 3
  • 2
5 Comments
 
LVL 11

Expert Comment

by:rowansmith
ID: 21798926
This all depends on a number of things.

Firstly your IP Address.  You will probably find that your provider has given you a pool of addresses, some will already be assigned to your hosts the other will be free, you just want to choose a free one.  Basically they have given you a range and it is up to you how you use that range.  Also you will need to configure this address in your DNS.

As for the load balancing question, this all depends on the type of application you are running and which one will meet your needs.

0
 

Author Comment

by:joshua731
ID: 21799034
I am also looking for the definition of each of these terms and the implications of each:

roundrobin
hash
leastconn
minmiss
0
 
LVL 11

Expert Comment

by:rowansmith
ID: 21799212
Roundrobin send each connection in series to the next box, so if you have three web servers it will send each new connection to each of the devices in a round robin fashion.

Leastconn every new connection will be sent to the web server which currently has the least number of connections, if two servers have the same (least) number of connections it will probably round-robin, but it might go to the one that has waited the longest since a connection

hashing is a bit hard to explain check out: http://devcentral.f5.com/Default.aspx?tabid=63&articleType=ArticleView&articleId=135 basically it gives you persistence and roundrobin at the same time.

minmiss - I have no idea what this is ..., it is probably a combination of hashing and roundrobin...
0
 
LVL 11

Accepted Solution

by:
rowansmith earned 500 total points
ID: 21799237
I just found this: http://helpdesk.doit.wisc.edu/ns/page.php?id=4246

Probably has everything you need to know.
0
 

Author Closing Comment

by:joshua731
ID: 31467814
That is an excellent link.  
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
San to San Replication Slowness/Issues 3PAR 7000 5 43
RAID 5 and Upgrading drives 12 86
HP Server -- RAID health, etc ? 2 50
Setting up RAID5 on HP ProLiant DL380G5 15 71
Our Group Policy work started with Small Business Server in 2000. Microsoft gave us an excellent OU and GPO model in subsequent SBS editions that utilized WMI filters, OU linking, and VBS scripts. These are some of experiences plus our spending a lo…
How to update Firmware and Bios in Dell Equalogic PS6000 Arrays and Hard Disks firmware update.
This tutorial will walk an individual through the process of installing the necessary services and then configuring a Windows Server 2012 system as an iSCSI target. To install the necessary roles, go to Server Manager, and select Add Roles and Featu…
This Micro Tutorial will teach you how to reformat your flash drive. Sometimes your flash drive may have issues carrying files so this will completely restore it to manufacturing settings. Make sure to backup all files before reformatting. This w…

808 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