For load balancing of DNS services, configure additional IPv4 service addresses or
loopback addresses to an xHA pair configured with DNS/DHCP
Server software version 8.1.0 or greater.
xHA customers can take advantage of additional DNS service addresses for better
flexibility and centralized control when consolidating old DNS servers into one
single server without disrupting any configurations that might be using the old IP
addresses.
To configure an xHA pair with multiple IPv4 service addresses or loopback
addresses:
-
Select the Servers tab. Tabs remember the page you
last worked on, so select the tab again to ensure you're on the
Configuration information page.
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From the configuration drop-down menu, select a configuration.
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Click the menu beside the xHA pair name and select Service
Configuration.
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From the Service Type drop-down menu, select
Interfaces.
-
Under the Interface column, choose the eth0
interface then navigate across the row to the Action
column and click Edit.
Note: The
Interface,
Type, IPv4
Primary and IPv6 Primary
fields are automatically populated and can't be edited. If
running an xHA pair, you will see the IPv4 PIP field, which also
can't be edited. The IPv4 PIP is the IPv4 address configured on
Service interface (or Management interface if Dedicated
Management is enabled) on the Active or Passive node.
-
Complete the following:
- In the Description field, enter a name for
the new services IP address. You can enter up to 80 alphanumeric
characters including spaces, but excluding special characters.
- OPTIONAL: In the IPv6 Primary field,
enter a Primary Service IPv6 address if you don't already have one
configured.
-
In the Address/CIDR field, enter an IPv4 or IPv6
address and netmask using CIDR notation. For example,
192.0.2.100/24 or 2001:db8::AC10:FE02/64. This will be the IP
address assigned to the newly created VLAN interface.
Note: If no CIDR netmask is added,
/32 will be automatically added for IPv4 addresses; /128 for IPv6 addresses.
-
Click Add Address. The IP address appears in the
Addresses list. Add additional IPv4 addresses as
needed. To delete an address, select an IP address from the
Addresses list and click
Remove.
-
Click OK.
-
Under Addresses, expand the primary IP to view
the newly added IPv4 address.
Note:
- You can add up to a maximum of 512 IPv4 addresses.
- Ensure that IP addresses are unique and don't conflict with IPs configured on
other interfaces of the server or in your network.
- If you reset services when replacing a DNS/DHCP
Server, the Interfaces/Additional IP Address service type will be
disabled but won't remove IP addresses from the list.