Technical data

48 ServerIron ADX Administration Guide

53-1002434-01

High availability configurations

ServerIronADX# sync-standby ssl-key-cert

Syntax: sync-standby { code | config | ssl-key-cert}

NOTE

The sync-standby boot command was deprecated in release 12.2.0 and is no longer available.

NOTE

The sync-standby command applies only to a ServerIron ADX with redundant management modules.

BP boot and flash code must be synchronized manually. We recommend re-downloading over TFTP

to simultaneously update the BP boot and flash images on both modules. To download software to

both modules, use the BP boot and flash upgrade instructions in the release notes.

High availability configurations

This section provides detailed information for creating high-availability ServerIron ADX

configurations.

Synchronizing the configurations

You can synchronize the configurations of ServerIron ADXs in a network by changing to the

configure sync-terminal level. Commands entered at this level on one ServerIron ADX are

duplicated on other ServerIron ADXs in the network where the following features are configured:

• Layer 4 Server Load Balancing features, for example, SLB, Symmetric SLB, hot standby

redundancy

• Layer 7 Switching features such as URL switching, cookie switching, HTTP header hashing, and

SSL session ID switching

• Health checks

NOTE

The “config-sync” feature is not supported on a ServerIron ADX when used in multiple context

scenarios.

For example, in Figure 3, the commands you enter on ServerIron ADX A while that device is at the

configure sync-terminal level, are duplicated on ServerIron ADX B.

FIGURE 3 ServerIron ADXs with connection to each other

ServerIron A

IP: 192.168.1.1

Port2

Port1

ServerIron B

IP: 192.168.1.2

MAC address: 00e0.5201.0c72