Cisco Cisco NAC Appliance 4.8.3 Installation Guide

The Configuration Utility script requires that the CAM and CAS machines come with eth0 (NIC1) and 
eth1 (NIC2) interfaces by default and prompts you to configure these during initial installation. If your 
system has additional network interface cards (e.g. NIC3, NIC4), you can use the following 
instructions to configure the additional interfaces (e.g. eth2, eth3) on those cards. Typically, eth2 needs 
to be configured when setting up CAS systems for High Availability. For HA, once the eth2 (NIC3) 
interface is configured with the proper addressing, it can then be configured as the dedicated UDP 
heartbeat interface for the HA-CAS.

For Cisco NAC Appliance hardware platforms, the following instructions assume that the 
NIC is plugged in and “working” (i.e., recognized by BIOS and by Linux).

To verify that the NIC has been recognized by Linux, type

 (where n is the 

interface number). For example, if adding a NIC to a system that already has two built-in 
Ethernet interfaces (eth0 and eth1), n is 2 and you enter 

.

Verify that the output displays information about the interface including MAC address and 
transmit and receive counters. This means the interface is recognized by Linux and can be 
used.

service perfigo restart

Shuts down the Clean Access service and starts it up again on the 
CAM or CAS. This is used when the service is already running and 
you want to restart it.

Do not use 

to test high availability 

(failover). Instead, use the 

 or 

 Linux 

command on the appliance to test failover, or, CLI commands 

 and 

.

service perfigo reboot 

Shuts down and reboots the CAM or CAS. Or, use Linux 

.

service perfigo time

Use to modify time zone settings. To view time, use Linux 

.