C9300-DNA-A-48S-3Y

C9300-DNA-A-48S-3Y is a Cisco DNA Advantage software subscription for the Catalyst 9300, covering a 48-port SFP (fibre) switch, on a 3-year term. The Catalyst 9300 is Cisco’s volume stackable access switch and the most widely deployed Catalyst 9000.

How Catalyst 9000 licensing actually works. There are two layers and they are bought separately. The switch ships with a perpetual Network licence — Network Essentials or Network Advantage — which never expires and is what keeps the switch forwarding traffic. On top of that sits the DNA subscription, which is what this part number is. The subscription entitles the Catalyst Center features: automation, assurance and analytics across the estate. Cisco requires an add-on subscription to be ordered with a new switch, which is why these part numbers turn up on quotes even when the buyer only wanted hardware.

The rule that catches people out: the subscription tier has to match the perpetual Network tier. DNA Essentials pairs with Network Essentials, DNA Advantage with Network Advantage. Ordering DNA Advantage for a switch licensed at the other tier is one of the commonest reasons a Catalyst order has to be redone, so it is the first thing we check.

What Advantage adds. Everything in Essentials, plus the capabilities that matter once the network is doing policy rather than just plumbing: deeper assurance and analytics, policy-based automation, network segmentation including software-defined access, and application visibility and control. On the Catalyst 9300 generation Cisco also bundled Identity Services Engine endpoint sessions and a ThousandEyes entitlement into Advantage — worth confirming for your release and platform, because what the bundle contains has changed over the years.

Term and what happens at the end of it. This is a 3-year subscription. When it expires you either renew it or deactivate it and reload the switch, which then runs on its perpetual Network licence with the DNA features gone. Worth being precise about one thing: under Smart Licensing Using Policy, DNA licences on Catalyst 9000 switches are not enforced on the device — the switch does not disable the features at expiry — but usage is still reported to Cisco Smart Software Manager. That is a compliance position, not a free extension, and the behaviour depends on your IOS XE release, so confirm it for your estate rather than relying on it.

How it is delivered. These are Smart Licences, not a PAK or a paper certificate. The entitlement lands in a Cisco Smart Account and is managed through Cisco Smart Software Manager, so you need a Smart Account before the licence is of any use — if you do not have one we will tell you rather than let it become a surprise. One genuinely useful property: Smart Licences can be moved between devices of the same type, so a switch replacement does not mean rebuying the subscription.

One thing worth knowing about where this is heading. Cisco has introduced a unified Networking Subscription, with Essentials and Advantage tiers spanning switching, wireless and WAN and a 36-month minimum on a new subscription. It runs alongside the DNA part numbers rather than replacing them — as of Cisco’s ordering guides this autumn, DNA, Catalyst and Networking Subscription part numbers are all still orderable. The unified licences do require a recent IOS XE release, so if you are considering that route the software version on your switches decides whether it is available to you yet.

Green Code Technologies supplies Cisco switching, wireless and the licensing that goes with it. Tell us the switch model, its current Network licence tier and the port count, and we will confirm this is the right part number before you order — including whether a renewal or an upgrade part would serve you better and cost less.