Installation guide

11-21

Device Manager Guide, Cisco ACE 4700 Series Application Control Engine Appliance

OL-26645-02

Chapter 11 Configuring High Availability

Configuring Host Tracking Probes

Use this procedure to configure probes on the active high availability group member to track the health

of the gateway or host.

Assumptions

• At least one host tracking process for high availability has been configured (see Tracking Hosts for

High Availability, page 11-20.)

• At least one health monitoring probe has been configured (see Configuring Health Monitoring for

Real Servers, page 6-41).

Procedure

Step 1 Choose Config > Virtual Contexts > HA Tracking And Failure Detection > Hosts. The Track Host

table appears.

Step 2 Select the tracking process you want to configure a probe for, and then select the Track Host Probe tab.

The Track Host Probe table appears.

Step 3 In the Track Host Probe table, click Add to add a track host probe, or select an existing track host probe,

and then click Edit to modify it. The Track Host Probe configuration screen appears.

Step 4 In the Probe Name field, select the name of the probe to be used for the host tracking process.

Step 5 In the Priority field, enter a priority for the host you are tracking by the active member of the high

availability group. Valid entries are integers from 1 to 255 with higher values indicating higher priorities.

Assign a priority value based on the relative importance of the gateway or host that the probes are

tracking. If the host goes down, the ACE appliance decrements the priority of the high availability group

on the active member by the value in this Priority field. If the resulting priority of the high availability

group on the active member is less than the priority of the high availability group on the standby member,

a switchover occurs.

Step 6 Do the following:

• Click Deploy Now to save your entries and to return to the Track Host Probe table. The table

includes the added probe.

• Click Cancel to exit this procedure without saving your entries and to return to the Track Host Probe

table.

• Click Next to save your entries and to configure another track host probe.