TITLE

A Modern IOS

AUTHOR(S)
Passmore, David
PUB. DATE
October 2005
SOURCE
Business Communications Review;Oct2005, Vol. 35 Issue 10, p16
SOURCE TYPE
Trade Publication
DOC. TYPE
Article
ABSTRACT
The article focuses on Cisco Systems Inc.'s Internetworking Operating System (IOS). Cisco's relatively new big-iron Carrier Routing System (CRS-1) includes a sophisticated IOS XR multitasking and multiprocessor OS created from scratch to meet the high-availability demands of service provider cores. IOS XR is well-suited to a service provider environment because it can isolate public and private services by virtualizing a single router into separate physical and logical partitions. This permits different services and customers to be isolated from each other. The microkernel-based, distributed OS internals of IOS XR were developed to leverage the distributed processing hardware of the Cisco CRS-1. This OS provides granular process independence, fault containment, and isolation of different functions. The CRS-1 can thus be maintained, upgraded, enhanced and scaled without service interruptions or network down time. The new Software Modularity version includes substantially revised underpinnings beneath visible interfaces.
ACCESSION #
18513855

 

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