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Failover

1. Verify that your current failover configuration is operating properly and that there are no error messages in

the Peer Summary Screen on the GUI ("Configuring Active/Passive Failover (GUI)" on page 451) or CLI

("Peer Commands" on page 164).

2. Upgrade the backup Equalizer first. ("Upgrading to the Latest Release" on page 65) The unit should be

configured in failover prior to the upgrade.

3. After upgrading immediately check the logs in the CLI or "Events Log" on page 205 in the GUI and view the

Equalizer's Event Log and Syslog for VLAN "mismatch" errors. Also check the GUI Peer Summary screen

for failover related errors. If the Log or Syslog indicate a VLAN mismatch, configuration synchronization will

be automatically disabled. As long as the 2 failover peers are heartbeating and a subnet configured with the

command flag enabled works properly, they will exchange configuration files. It is possible that a VLAN

mismatch will not allow them to synchronize properly.

a. Check the VLANs and subnets on the Primary and Backup Equalizer to verify that they are

configured identically.

b. Check the messages in log for configuration file mismatch. If there is a configuration file

mismatch, upgrade the primary equalizer.Until the primary equalizer is upgraded

configuration changes will need to be made on both units for failover to work properly.

Failover Between EQ/OS 8.6 and EQ/OS 10

The procedures in this section show you how to configure failover using an Equalizer running EQ/OS 8.6 as the

preferred primary and an Equalizer running EQ/OS 10 as the preferred backup.

EQ/OS Version 8.6 Failover Constraints

An Equalizer running EQ/OS 10 can be configured into failover with an Equalizer running EQ/OS 8.6, subject to

these constraints:

l The failover configuration is limited to two (2) VLANs only; both Equalizers must be configured with at most

two VLANs.

l Configuration synchronization is

not supported

(that is, the dont transfer option must be enabled on both

units). The configurations on both devices must be updated manually to maintain equivalent configurations,

meaning the following:

The VLAN configuration on the EQ/OS 10 Equalizer must match that of the Version 8.6 Equalizer. This includes

the subnets and failover IP addresses set on each system. [Note that although EQ/OS 10 supports multiple

subnets per VLAN, you can only configure one subnet per VLAN when enabling failover with an EQ/OS 8.6

system.]

Clusters and servers must be configured equivalently on both systems. This means that cluster and server IP

addresses, ports, and parameters must be set to the same values on both systems. The difference is that on

EQ/OS 8.6, servers are assigned directly to clusters, while on EQ/OS 10, servers are assigned to server pools and

then to clusters. The important point is that the server pool used in a cluster on EQ/OS 10 must be configured with

the same servers used in the equivalent cluster on the EQ/OS 8.6 system.

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Coyote Point Systems Equalizer Especificaciones Pagina 426