Cisco ISR4451-X-SEC/K9 Router

Cisco ISR4451-X-SEC/K9 Router is a software licence for Cisco ISR 4000 routing equipment: cisco ISR 4451 Sec bundle w/SEC license. Nothing ships; a key or entitlement is applied to hardware you already have.

This licence covers security features, which on most routers are entitled separately from the hardware. Two things follow. Encryption and inspection cost throughput, often a lot, so a router sized on its plain forwarding figure may not meet the same number with security enabled. And export-restricted strong-encryption licences are a separate category again, which is why part numbers carrying an HSEC or export-compliance designation exist at all.

Before buying any router licence, check what is already enabled. Licences accumulate over the years and are rarely documented well, and the authoritative record is the equipment itself read through its management interface, not the purchase history. Licences are also generally tied to a specific chassis and cannot be moved if the hardware is replaced, which matters when planning spares.

What this platform is for. The ISR 4000 is a branch and regional-office router from Cisco’s current Integrated Services line, where throughput is licensed in tiers rather than fixed. Knowing the family’s intended role is usually more useful than the part number when you are working out whether something fits: a chassis built for one job will do another, but rarely well, and the cost of that mismatch tends to show up as throughput or feature limits rather than as an outright failure.

Three questions worth answering before any router purchase, whatever the model. What the throughput requirement actually is with your feature set enabled, rather than the datasheet figure measured without it. Whether the features you need are licensed as well as present, since on most platforms security and performance are separate entitlements. And how many slots or ports you will need in three years, because adding capacity is cheap and replacing a chassis is not.

A point about end-of-life notices on a platform like this, because it causes real confusion. Cisco publishes these per part number, not per family. The ISR 4000 family is not retired, but individual line cards, route processors and software releases within it have their own notices, and some of them have passed. So “is the platform current?” and “is this specific card still supported?” are two different questions with potentially different answers.

That is why we check the exact part number rather than the family before quoting. Send us the code you are looking at and we will tell you where that specific item stands, not where the platform stands.

Send us the platform, the chassis or serial identifier and the software release you are running, along with what you are trying to achieve, and we will confirm whether this is the licence that does it.

Green Code Technologies is a supplier of Cisco, and we supply Huawei and Juniper networking alongside HPE, Dell, Samsung, Netgear, Ubiquiti and Asus. We would rather tell you a part is no longer supported, or that we need to check it, than take an order for something that will not do what you need.