12.4(x) New Features

• ATM Mode for Two-Wire or Four-Wire SHDSL

• Chunk Validation During Scheduler Heapcheck
  This feature was introduced in 12.4(8).

• Cisco Communication Media Module (WS-SVC-CMM) Voice Features for Catalyst 6500 Series and Cisco 7600 Series
  This document was called Catalyst 6500 Series and Cisco 7600 Series CMM Voice Features for Cisco IOS Release 12.3(8)XY.

• Cisco High-Speed Intrachassis Module Interconnect (HIMI) Feature Module

• Cisco High-Speed Intrachassis Module Interconnect (HIMI) Configuration Guide

• Cisco NM-1A-OC3-POM Network Module

• Distributed Multilink Point-to-Point Protocol for Cisco 7500 Series Routers

• L2TP - IPSec Support for NAT and PAT Windows Clients

• MPLS Label Distribution Protocol (LDP)
  The change in the default label protocol (from TDP to LDP) was introduced in Cisco IOS Release 12.4(3).

• Network-Based Application Recognition
  The NBAR and dNBAR features on all platforms for all Cisco IOS Releases are covered in this document.

• Scalability for Stateful NAT
  This feature was introducted in Cisco IOS Release 12.4(3).

• VRF Aware System Message Logging (Syslog)

• IP-RIP Delay Start
  This feature was introduced in Cisco IOS Release 12.4(12), for CCO.