Specifications

Release Notes for Cisco IOS Release 12.0 S

78-7130-11 Rev. B0

New and Changed Information

NPE-300

Platforms: Cisco 7200 series

The network processing engine NPE-300 is the newest and the highest performance processor in the

family of network processing engines for the Cisco 7200 series routers. The NPE-300 performs at a rate

of approximately 300,000 packets per second (pps) in fast switching, a 50 percent increase over the

NPE-200 performance.

The NPE-300 uses a high-performance 262.5-MHz R7000 RISC processor and can support up to

256 MB of memory, providing superior performance for both enterprise and service provider

applications that require processor-intensive services. Network layer services such as traffic

management, security, and QoS benefit significantly from the high performance of NPE-300.

A Cisco 7200 VXR router equipped with an NPE-300 can support up to six high-speed port adapters

and can also support higher-speed port adapter interfaces including Gigabit Ethernet and OC-12 ATM.

The NPE-300 uses synchronous DRAM (SDRAM) for storing all packets received or sent from network

interfaces. The SDRAM also stores routing tables and network accounting applications. There are two

independent SDRAM memory arrays in the system that allow concurrent access by port adapters and

the processor. The NPE-300 can be configured with up to 256 MB of processor and packet memory,

which is double the 128-MB memory limit on the NPE-200. See the following document for further

information:

http://www.cisco.com/univercd/cc/td/doc/product/core/7200vx/72vxicg/index.htm

PA-MC-8EI/120, PA-MC-4TI, PA-MC-8TI, and PA-MC-8DSX1 Multichannel E1 and T1 ISDN PRI Port

Adapters

Platforms: Cisco 7200 series, Cisco 7500/RSP series

The multichannel E1 and T1 ISDN PRI port adapters (PA-MC-8E1/120, PA-MC-4T1, PA-MC-8T1, and

PA-MC-8DSX1) are available on Cisco 7200 series routers, Cisco 7500 series routers, and Cisco 7000

series routers with the 7000 Series Route Switch Processor (RSP7000) and 7000 Series Chassis

Interface (RSP7000CI).

The PA-MC-8E1/120, PA-MC-4T1, and PA-MC-8T1 are single-wide modules that integrate channel

service unit (CSU) functionality, data service unit (DSU) functionality, and E1 or T1 channel support

into the Cisco router. The PA-MC-8DSX1 is a single-wide module that integrates DS1 DSU

functionality and DS0 channel support into the Cisco router.

The PA-MC-8E1/120, PA-MC-4T1, PA-MC-8T1, and PA-MC-8DSX1 provide four or eight

independent T1 (100-ohm) or E1(120-ohm) connections via RJ-48C connectors. Each T1 or E1 port

adapter can provide up to 128 separate full-duplex High-Level Data Link Control (HDLC) fractional or

full T1 or E1 channels. Individual T1 connections of the DSX-1 version of the port adapters can connect

to external CSUs, to digital cross connects (DACS), or to any other equipment that uses a DSX-1

interface.

See the following documents for further information:

http://www.cisco.com/univercd/cc/td/doc/product/cable/cab_rout/cfig_nts/4815ds1p/index.htm

http://www.cisco.com/univercd/cc/td/doc/product/cable/cab_rout/cfig_nts/5083e1p/index.htm