
Failover
2. Configure VLANs and subnets on both units; they must be exactly the same as noted above under "EQ/OS
Version 10 Failover Constraints" on page 435"EQ/OS Version 10 Failover Constraints" on page 435
3. Designate a preferred primary and preferred backup using "Configuring Active/Passive Failover (CLI)" on
page 443 beginning with step 3.
4. Open the Equalizer Graphical User Interface (or GUI) and select the subnet of the VLAN to be used as the
"Preferred Primary".
5. Click on the Failover tab to display the following. In the example shown below a subnet sn01 for the VLAN
172net is displayed.
6. Configure the failover parameters for the preferred primary equalizer; in this case sn01 on the VLAN
172net. Use the check boxes and sliders as necessary. You will not be able to change the Failover IP
Address. The Failover IP Address is used primarily as a server gateway and to provide an IP address for
system services such as the GUI, SSH, etc.
When configuring a Failover IP address on a subnet on Equalizer, make absolutely sure that no other system
on the network is using that Failover IP address other than the Equalizers configured into failover.
If the IP address IS used by another system on the net, and a failover occurs, BOTH of the failover peers will
transition to and remain in BACKUP mode! The way to fix the problem is to:
1. Remove the duplicate IP address from the offending system.
2. Reboot one of the peers.
The peers should transition to their proper failover modes.
This applies to both Active/Passive and Active/Active failover.
1. Check the appropriate check boxes in the Use Subnet IP Address pane as follows:
a. Checking the Command Transfer checkbox will designate this subnet as the subnet over
442
Copyright © 2013 Coyote Point Systems. A subsidiary of Fortinet, Inc.
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