Cisco Cisco IOS Software Release 12.0(13)S7

When Lawful Intercept is enabled, forwarding performance of non-intercepted packets is degraded by 
7 to 8  percent. 

Network administrators are not able to observe Lawful Intercept is enabled. No Lawful Intercept 
program messages or error messages are ever displayed on the console.

Lawful Intercept on Cisco 12000 series routers does not provide the following features for Cisco IOS 
Release 12.0(32)S:

Support of RTP-NOR encapsulation 

MAC based interception (requires support of MAC-based ACL on Tetra line cards)

VPN/VRF aware traffic (on tag imposition and tag disposition only)

Other line cards support

TAP MIBs version 2

MPLS traffic

Multicast traffic

IPv6 traffic

Per interface Lawful Intercept configuration

Lawful Intercept supports the following technologies on the Cisco 12000 series routers:

IPv4 traffic

Global Lawful Intercept configuration

UDP encapsulation

CISCO-TAP-MIB, Version 1

Cisco 12000 Series IP Services Engine (ISE) 

For general configuration information on the Cisco 12000 series routers, refer to the following 
documentation:

Software Configuration Guide for the Cisco 12000 Series Internet Router 

For information on how to configure a Cisco Media Gateway Controller (MGC), go to:

Lawful Intercept for Cisco 12000 series routers is supported on Cisco IOS Release 12.0(32)S and is 
supported on all Cisco 12000 Series IP Services Engine (ISE)  line cards.