Skip to main content
NetApp Knowledgebase

How to set up DNS load balancing in clustered Data ONTAP

Views:
772
Visibility:
Public
Votes:
0
Category:
data-ontap-8
Specialty:
core
Last Updated:

Applies to

  • CMODE
  • Clustered Data ONTAP 8
  • Setup Configuration

Description

Domain Name System (DNS) load balancing is a method by which administrators can be sure that clients accessing vServer data LIFs are accessing them in a manner that does not overload individual lifs.

The following two methods can be performed:

  • Round Robin DNS (External DNS configuration)
  • On-Box DNS load balancing (Available in clustered Data ONTAP 8.1 and later)

With On-Box DNS, conditional forwarders or delegations can be leveraged.

A forwarder is a DNS server on a network used to forward DNS queries for external DNS names to DNS servers outside that network. You can also forward queries according to specific domain names using conditional forwarders.

A conditional forwarder is a DNS server on a network that is used to forward DNS queries according to the DNS domain name in the query. For example, a DNS server can be configured to forward all the queries it receives for names ending with widgets.example.com to the IP address of a specific DNS server, or to the IP addresses of multiple DNS servers.

DNS delegation *must* be used if configuring a vServer to use a DNS domain that is in the same tree as an existing zone.

For example, if you want to use cmode.netapp.com in my domain netapp.com, you can use a DNS delegation.

 

CUSTOMER EXCLUSIVE CONTENT

Registered NetApp customers get unlimited access to our dynamic Knowledge Base.

New authoritative content is published and updated each day by our team of experts.

Current Customer or Partner?

Sign In for unlimited access

New to NetApp?

Learn more about our award-winning Support