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Cisco's IOS set for radical pricing, feature changes

Cisco vice president outlines issues facing the router software

By Phil Hochmuth, Network World
December 15, 2006 11:53 AM ET
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SAN JOSE — Cisco over the next five years plans to radically change how it sells and delivers router and switch software, in part by making that software more virtualized and modular.

Cisco’s intention is to decouple IOS software from the hardware it sells, which could let users add enhancements such as security or VoIP more quickly, without having to reinstall IOS images on routers and switches. The vendor also plans to virtualize many of its network services and applications, which currently are tied to hardware-specific modules or appliances.

This shift would make network gear operate more like a virtualized server, running multiple operating systems and applications on top of a VMware-like layer, as opposed to a router with a closed operating system, in which applications are run on hardware-based blades and modules. Ultimately, these changes will make it less expensive to deploy and manage services that run on top of IP networks, such as security, VoIP and management features, Cisco says.

High-level details of the road map were delivered in a session at Cisco’s C-Scape analyst conference last week in San Jose by Cliff Metzler, senior vice president of the company’s Network Management Technology Group.

Cisco software challenges
Cisco has identified the problems with its IOS router operating system and other network software, and proposed a five-year plan to make things better.

Challenge Strategy
Cisco's IOS software is tied closely with hardware, making it hard to upgrade and manage. IOS will be decoupled from hardware, with individual services running more like virtualized services.
Blades running specific services or applications take up room in a chassis and are difficult to deploy quickly. Servers could be virtualized across a router or switch chassis, similar to virtualized server operating systems running separately on one server hardware platform.
Services running in IOS are tightly bundled, which sometimes forces users to run code with extra modules and services that are not used. While breaking IOS away from hardware, Cisco also plans to separate out the various services running in IOS, letting users choose and activate only what they need.
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“The way we’ve sold software in the past is we’ve bolted it onto a piece of hardware, and we shipped [customers] the hardware,” Metzler said. “We need more flexibility to allow customers to purchase software and to deploy it according to their terms.”

IOS upgrades require a reinstall of the new software image on the router or switch — which causes downtime — or, “we say, not a problem, UPS will arrive soon, here’s another blade” to run your new service or application, Metzler said. “This adds months to the deployment cycle, which is not good for customers or Cisco’s business.”

Because IOS code releases are a superset of features in previous versions, Metzler added, users must also go through lengthy testing processes to ensure new features don’t interfere with existing network services. The most recent IOS release, for example (12.4(11)T), has 31 new features, ranging from intrusion-prevention system (IPS) and VPN upgrades, to VoIP, Border Gateway Protocol, load-balancing and VoiceXML features.

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