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The enhanced Asynchronous Transfer Mode (ATM) port adapters (ATM PA-A3) are single-port and dual-wide ATM port adapters for the CISCO 7200 AND 7500 SERIES ROUTERS AND THE FLEXWAN MODULE FOR THE CATALYST 6000 FAMILY OF SWITCHES. The ATM PA-A3 is designed with a high-performance, dual segmentation and reassembly (SAR) architecture with local buffer memory. The ATM PA-A3 supports the latest ATM hardware features such as per-virtual connection (VC) traffic shaping and Virtual Path (VP) traffic shaping, support for ATM service classes (non-real time variable bit rate [nrt-VBR]), ABR except on the OC-12c/STM4 version, unspecified bit rate [UBR]), and support of 4096 ATM VCs.
Intra-Pop Aggregation
Metro
LAN Emulation over ATM (LANE)
WAN Aggregation
RFC 1483 support for multiple encapsulations over ATMRFC 1577 support for routing over ATM
ATM service classes: UBR, UBR+, VBR-nrt, ABR
ATM Forum UNI 3.0, UNI 3.1, and UNI 4.0
Supports AAL5 ATM adaptation layer
Up to 4096 simultaneous Virtual Circuits (VCs)
Layer 2 per-VC and per-VP queuing and traffic shaping
ATM PVCs and SVCs
LANE 2.0 client and server
F4 and F5 Operations and Maintenance (OAM) cell support
ABR SVCs except on the OC-12c/STM4 version
MPOA client and server
MPLS, MPLS Traffic Engineering, MPLS-VPN, MPLS-COS
PPP over ATM Interim Local Management Interface (ILMI)
Figure 17-62: PA-A3 OC-12 ---OC12SMI Version Shown
Figure 17-63: PA-A3-OC3SMI
