Thursday, April 25, 2024

Studying to SWIM sooner, extra simply – and extra usually


In collaboration with Christie Pinschmidt

“If it ain’t damaged, don’t repair it.”

This time-worn expression has been utilized to numerous conditions, by many organizations, over time – usually with unlucky outcomes.

The draw back of this method is particularly obvious in the case of managing community software program. Too usually, IT groups delay community software program upgrades as a result of they view the method as painful, tedious, and time-consuming. Consequently, they maintain off till a important concern arises – usually a safety vulnerability that requires an all-hands-on-deck “hearth drill” to treatment.

Cisco IT has taken steps to ascertain a extra constant course of for managing community software program upgrades prescribed by the Cisco Product Incident Response Crew (PSIRT). PSIRT is a devoted, world group that receives, investigates, and publicly experiences safety vulnerability info associated to Cisco merchandise and networks. Typically, resolving a reported incident requires upgrades to merchandise underneath lively assist from Cisco.

Cisco IT just lately realized that it wanted to deal with two eventualities related to “chasing” PSIRT upgrades:

  1. Having to implement these upgrades by working weekends – and generally by scrambling to deal with zero-day vulnerabilities.
  2. Struggling to deal with an ever-increasing variety of lower- and medium-priority PSIRT upgrades.

The target was clear: allow sooner, simpler, and extra frequent upgrades of community components, whereas sustaining a safe setting. As a part of its mission, Cisco IT sought to cut back the variety of noncompliant/undefined community units to zero, whereas additionally making the method as painless as upgrading a cell phone.

Harnessing a controller and automation to ship sooner, simpler SWIM upgrades – at scale

To realize these objectives, Cisco IT is harnessing the facility of Cisco DNA Heart and Cisco Enterprise Course of Automation (BPA) to carry out working system software program picture administration (SWIM) upgrades sooner and extra constantly than ever earlier than.

Cisco DNA Heart is a strong community controller that, amongst different issues, allows zero-touch system provisioning and SWIM options that scale back system set up or improve time from hours to minutes. Cisco BPA gives a scalable, microservices-based platform with an embedded workflow engine, digital consumer interface, and customary integration middleware that helps automate advanced community configuration modifications and related processes. BPA permits Cisco IT to enhance operational effectivity, scale back advanced labor-intensive duties and IT failures, and be certain that community modifications are validated to stick to organizational insurance policies.

Better of all, the dynamic duo of Cisco DNA Heart and Cisco BPA permit Cisco IT to ship SWIM upgrades at scale.

The flexibility to conduct SWIM upgrades at scale is important for Cisco IT, which has a purpose of upgrading each system managed by the Cisco Community Service (NWS) group – about 35,000 components – not less than twice per year. These networks span Cisco’s campus LAN, WAN, information facilities, and department workplaces (about 400), together with companions and Cisco’s distant employees who’ve managed connections (CVO/MVO). The community units comprise entry factors (about 14,000), work-at-home units similar to CVOs and MVOs (about 10,000-11,000), and “massive packing containers” similar to switches, routers, and firewalls (about 9,000-10,000).

Cisco IT’s twice-yearly improve goal is designed to align with the community software program improve schedule set by Cisco’s Enterprise Networking and Meraki enterprise unit (BU), which releases PSIRT bundles (important releases, main patches, and so on.) each two quarters for every platform. As well as, the BU sprinkles smaller updates all year long.

Cisco IT shortly realized it may attain and maintain twice-yearly upgrades of 35,000+ units solely by leveraging community controllers like Cisco DNA Heart – mixed with enterprise course of automation – to implement SWIM. Utilizing Cisco DNA Heart and Cisco BPA, Cisco IT’s engineers can carry out SWIM upgrades just by deciding on a picture, clicking a number of buttons, and leveraging automation capabilities to improve units robotically.

The answer at the moment utilized by Cisco IT is, admittedly, comparatively fundamental – it performs SWIM duties on an inventory of units by way of easy automation, then updates and pushes pre- and post-checks to the change report and closes the change. Sooner or later, nonetheless, Cisco IT sees the potential to totally automate the improve course of, in order that engineers don’t even want to the touch the system. Every system kind would have its personal improve window, and the system would carry out the check-in and check-out steps completely by itself.

Driving important early-stage advantages

Though Cisco IT continues to be within the preliminary levels of implementing its twice-yearly SWIM upgrades throughout the corporate’s 35,000+ NWS-managed units, early returns are promising:

  • By attaining constant, twice-yearly upgrades at scale, Cisco IT is establishing a normal for purchasers to comply with. Few, if any, Cisco clients are at the moment upgrading community components twice per yr. In actual fact, some are at the moment not performing any upgrades over the lifetimes of their merchandise.
  • Cisco IT’s resolution incorporates easy automation to speed up and easy community upgrades – with the potential for sooner and much more frequent upgrades sooner or later.
  • The mixture of Cisco DNA Heart and Cisco BPA improves Cisco IT workers’ productiveness and expertise by eliminating tedious handbook patching and upgrading.
  • Most necessary, the answer permits Cisco IT to deal with the BU’s important improve bundles in a well timed trend. This improves the corporate’s safety posture by figuring out vulnerabilities attributable to out of date variations of the O/S software program, or by having too many software program variations on the community.

Primarily based on Cisco IT’s early SWIM improve success, maybe it’s time for a brand new catchphrase: “Repair it earlier than it’s damaged.”



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