In order for F5 load balancing to be configured properly, the Virtual IP address
(VIP) of the LTM server must be set as the loopback interface on
DNS/DHCP Servers in the F5 pool.
If there's more than one VIP associated with an LTM
server, all of those IP addresses must be set as loopback addresses on the DNS/DHCP Servers in the F5 pool.
The VIP of the LTM server must be obtained when configuring
the LTM server on the F5 management interface. For more
information, refer to https://f5.com/products/big-ip/local-traffic-manager-ltm.
To configure loopback addresses:
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From the configuration drop-down menu, select a configuration.
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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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Click the server or xHA pair name menu button and select
Service Configuration.
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From the Service Type drop-down menu, select
Interfaces. Address Manager queries the server and
returns the current interface configurations.
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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.
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Complete the following:
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Click OK.
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Under Addresses, expand to view the newly added
loopback address.