Cisco 128-MB ECC memory for OSMs MEM-OSM-128M= Data Sheet

Cisco Systems, Inc.

All contents are Copyright © 1992–2003 Cisco Systems, Inc. All rights reserved. Important Notices and Privacy Statement.

Page 2 of 10

WAN modules, and is specifically intended for service provider networks. The Cisco 7600 Series route-processing

and forwarding capabilities support the ability to route using such core protocols as Border Gateway Protocol 4

(BGP4), Intermediate System-to-Intermediate System (IS-IS), and Open Shortest Path First (OSPF), while supporting

quality of service (QoS) and packet filtering with optical transmission speed performance. Each Cisco 7600 Series

chassis provides Network Equipment Building Standards (NEBS)-3 compliance and supports a 256-Gbps switch

fabric, enabling high aggregate throughput. The Cisco 7600 Series can be configured with Optical Services Modules

and any combination of traditional Cisco Catalyst 6000 Series interfaces, providing for outstanding scalability, with

WAN interfaces from DS0 through OC-48/STM-16 and LAN interfaces from 10-Mbps Ethernet to Gigabit Ethernet,

and on up to 10 Gigabit Ethernet.

Cisco DPT rings run over a variety of transport technologies, including SONET/SDH, wavelength-division

multiplexing (WDM), and dark fiber. DPT provides service providers with the flexibility to operate packet rings over

their embedded fiber transport infrastructure, as well as providing an evolution path to packet-optimized transport

for high-bandwidth IP networks. An OC-48c/STM-16c DPT interface node consists of two OC-48c/STM-16c

SONET/SDH interfaces, which have been configured to perform as a single DPT interface.

DPT uses optimal path selection, spatial reuse, statistical multiplexing, and two active connections to maximize the

carrying capacity of the DPT ring. DPT also uses the Spatial Reuse Protocol (SRP) fairness algorithm to ensure that

both global fairness and local bandwidth optimization are delivered on all segments of the DPT ring. Finally, DPT

configurations are based on the concept of dual counter-rotating rings, which allow for efficient transmission of data

and control information.

DPT combines powerful SONET/SDH overhead processing with Layer 2 management capabilities to deliver

proactive, multilayer performance-monitoring, fault-detection, and fault-isolation capabilities. DPT provides

sophisticated protection-switching capabilities for responsive self-healing via the Intelligent Protection Switching

(IPS) algorithm. IPS enables sub-50-ms protection-switching performance for rapid service restoration and protection

hierarchy to handle cases of multiple, concurrent degrade, failure, or maintenance events.