Cisco Cisco IOS Software Release 12.0(30)S

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QoS: Match ATM OAM
The QoS: Match ATM Operation, Administration, and Maintenance (OAM) feature distinguishes control 
traffic from data traffic so that the control traffic can be protected from being dropped during interface 
congestion. Control traffic consists of router-generated ATM OAM protocol packets, used to manage the 
link status. Data traffic is the network-applications-generated packets, usually from network users. By 
using Modular Quality of Service (QoS) Command-Line Interface (CLI) (MQC) with this feature, you 
can label the control traffic as high priority when it travels through a Layer 2 Virtual Private Network 
(L2VPN) tunnel. 
Feature History for QoS: Match ATM OAM
Finding Support Information for Platforms and Cisco IOS Software Images
Use Cisco Feature Navigator to find information about platform support and Cisco IOS software image 
support. Access Cisco Feature Navigator at 
. You must have an account on 
Cisco.com. If you do not have an account or have forgotten your username or password, click Cancel at 
the login dialog box and follow the instructions that appear. 
Contents
Release
Modification
12.0(30)S
This feature was introduced.