Article Categories
» Arts & Entertainment
» Automotive
» Business
» Careers & Jobs
» Education & Reference
» Finance
» Food & Drink
» Health & Fitness
» Home & Family
» Internet & Online Businesses
» Miscellaneous
» Self Improvement
» Shopping
» Society & News
» Sports & Recreation
» Technology
» Travel & Leisure
» Writing & Speaking

  Listed Article

  Category: Articles » Technology » Computer Hardware » Article

DNS Load Balancing

By Mark henry

How DNS load balancing works When the request comes to the DNS server to resolve the domain name, it gives out one of the several canonical names in a rotated order. This redirects the request to one of the several servers in a server group. Once the BIND feature of DNS resolves the domain to one of the servers, subsequent requests from the same client are sent to the same server. DNS load balancing implementation (Multiple CNAMES) This approach works for BIND 4 name servers, where multiple CNAMES are not considered as a configuration error. Assuming there are 4 web servers in the cluster configured with IP addresses 123.45.67.[1-4], add all of them to the DNS with Address records (A Names) as below. The srv[1-4] can be set to any name you want, such as foo[1-4], but should match the next step. The DNS server will resolve the to one of the listed servers in a rotated manner. That will spread the requests over the group of servers. Note: The requests sent to (without 'www') should be forwarded to in this case to work. For BIND 8 name servers, the above approach will throw an error for multiple CNAMES. This can be avoided by an explicit multiple CNAME configuration option as shown below. DNS load balancing implementation (Multiple A Records) This above approach with multiple CNAMES for one domain name is not a valid DNS server configuration for BIND 9 and above. In this case, multiple A records are used.

Mark henry is the author related to Load Balancer, Dual Port Router, Multiple Gateways, Server Load Balancing Xrio provide solutions for bandwidth management, load balancing, link bonding, server load balancing, multiple gateways, global traffic management, wan optimization, wan performance, isp, adsl, sdsl, dual port router, high availability router, local director, multihoming router, vpn clustering.

About the Author

Mark henry is the author related to Load Balancer, Dual Port Router, Multiple Gateways, Server Load Balancing Xrio provide solutions for bandwidth management, load balancing, link clustering.

Article Source:
If you wish to add the above article to your website or newsletters then please include the "Article Source:" as shown above and make it hyperlinked.

  Some other articles by Mark henry
How to Fix Your Bad Credit with Debt Consolidation
Sometimes, when we owe money, it seems like the bottom has dropped from our glass. When it comes to debt relief and repairing credit ...

Replica bags for Fashion Victims
My husband always complains that "I am just another fashion victim!" Though I claim I am not, I should confess that I am indeed not indifferent to fashion… Fashion is the mean to stay ...

  Recent Articles
Notebook Buying Tips
by Roberto Sedycias

Quality Printer Supplies Online
by Mike Nicholson

Decoding the DCF-77 Radio Time Signal
by Dave Evans

System Strategy and Motherboard
by Zahir Shah

How Do You Get The Latest Printer Cartridges Without Paying Outrageous Prices?

When, Why, and How should I reformat my Hard Drive?
by Timothy Scheiman

High Capacity Data Storage Solutions for Organizations of all Sizes.
by Mike Nicholson

The Development of the Vital IBM PC in Spite of the Corporate Culture of IBM
by Max Rubin

Leading Computer Consumables Supplier in UK.
by Mike Nicholson

Designing and testing robust industrial computing solutions
by Leon Mengot

Business RFID Strategy
by Zhen Dong

The Indian Market and Copiers
by ram

Apple FireWire Effective bandwidth of the USB 2.0
by Nivea David

Apple's SCSI Cards
by Monica Craft

Apple's New Mac Book Pro with Core 2 Duo 2.33 GHz
by Nivea David

Apple's Powerful Mac Parts
by Harry Johnson

Can't connect to database