Cisco Cisco IOS Software Release 12.0(23)S

This feature module describes the ATM virtual circuit (VC) bundle management feature. The ATM VC 
bundle management feature allows you to configure multiple VCs that have different QoS characteristics 
between any pair of ATM-connected routers. With the introduction of this feature, the 8-Port OC-3 
STM-1 ATM line card provides the capability to build a quality of service (QoS) differentiated network 
for Cisco 12000 Series Internet Routers.

This document includes the following sections:

Prior to the introduction of this feature, the 8-Port OC-3 STM-1 ATM line card was capable of using 
Weighted Random Early Detection (WRED) and Modified Deficit Round Robin (MDRR) to classify and 
set priorities for packets, but they all shared a single QoS VC. The VC bundle management feature 
addresses this problem by allowing you to define an ATM VC bundle and add VCs to it. Each VC of a 
bundle has its own ATM traffic class and ATM traffic parameters. You can apply attributes and 
characteristics to discrete VC bundle members, or you can apply them collectively at the bundle level.

12.0(23)S

This feature was made available on the 8-Port OC-3 STM-1 ATM line card 
for Cisco 12000 Series Internet Routers.