Cisco Cisco Agent Desktop 9.0 Technische Referenzen

Cisco CAD Service Information 7.2

286

May 2007

Installing a Second NIC on a VoIP Monitor 
Service Computer

1. Shut down the computer.

1. Install the second NIC in the computer.

2. Start the computer.

3. Make sure that neither adapter is using dynamic host configuration protocol 

(DHCP) to get its IP address.

4. Assign valid IP addresses to the adapters.

5. Determine which of the two adapters will be used for sniffing.

6. Connect the sniffing adapter to the switch SPAN port.

7. Use the route command to customize the local routing table so that normal 

traffic does not go through the sniffing adapter.

8. Verify that the sniffing adapter is not registered with DNS and WINS by using 

the following command:

ping local_host_name

Where local_host_name is the IP address or DNS name of the adapter. This 
ensures that the local name always resolves to the normal traffic card IP 
address.

Verify that the sniffing adapter is not the first adapter in the system’s binding 
order.

Additional Configuration Steps

The CAD installation process offers the user the option to choose the IP address that 
the VoIP Monitor service will use for packet sniffing. In a system with multiple NICs, 
the first adapter found is the default network adapter becomes the sniffing adapter. 
This may not be the adapter you want to use.

To change the NIC that is used by packet sniffing, use the CAD Configuration Setup 
utility. See the CAD Installation Guide for more information. This utility contains a 
screen that lists all valid NIC adapters in the system by IP address. Simply select the IP 
address associated with the NIC configured for packet sniffing and save your changes. 
This information is used by the VoIP Monitor service the next time the service is 
started.

To uninstall or reinstall the packet sniffing NIC or install a different packet sniffing NIC, 
use the CAD Configuration Setup utility as described above. If you do not use the CAD