Cisco Cisco Agent Desktop 9.0 Installationsanleitung

Cisco CAD Installation Guide

106

August 8, 2012

does not go through the NIC used for sniffing. Otherwise, the sniffed RTP streams of a 
currently-monitored call might not reach the supervisor because the SPAN destination 
port does not allow outgoing traffic.

To resolve this, use the route command to customize the static routing table so that 
normal traffic does not go through the sniffing NIC. Contact your network 
administrator for details.

An alternative solution is to give the sniffing NIC an IP address that no other host on 
the network uses, and a subnet mask of “255.255.255.0”. Leave the default gateway 
field blank for this NIC’s TCP/IP binding. 

Installing a Second NIC on a VoIP Monitor Service 
Computer

This procedure applies only to computers running Windows 2000.

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. Give the adapters valid IP addresses.

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

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

7. Connect the second adapter with a normal switch port that is not monitored 

by the SPAN port.

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

traffic does not go through the sniffing adapter.

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

the PING <local hostname> command. This ensures that the local name 
always resolves to the normal traffic card IP address.

10. Using Windows Explorer, navigate to the C:\Program Files\Cisco\Desktop\bin 

folder and double-click PostInstall.exe to start CAD Configuration Setup.

11. Select the VoIP Monitor Service window, and then choose the IP address of 

the NIC you just installed from the drop-down list.

12. Click Apply to save your changes and then exit CAD Configuration Setup.