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Cisco Express Forwarding (2023 Edition)

Cisco Express Forwarding (2023 Edition)

CEF Deep Dive (commands) for IOS-XE C9300 used as example Model: C9300L-24UXG-4X Control Plane (CP) = R0 Data Plane (DP) = F0, UADP/ASIC CEF Background:  Why Cisco Express Forwarding (CEF)?  “Necessity is the mother of invention” -proverb Let’s take a trip in the networking time machine back to simpler times (late 80s, early 90s). I’m going to start with the fundamentals of software-based forwarding and all the pipeline steps involved. We didn’t have fancy ASICs like we do today, so everything was done…

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The Network. Intuitive.

The Network. Intuitive.

A New Network for a New Era Well, the cat is finally out the bag… I’ve been biting my lips for the last several months working on campus designs with customers. That’s because internally at Cisco, all the buzz was around bringing SDN and most importantly intent driven networking to the campus in a BIG way. This is very much akin to how Cisco transformed the data center with ACI. In fact, I’ve heard verbatim from customers “why doesn’t Cisco…

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Cisco Impresses with UCS

Cisco Impresses with UCS

Cisco impresses with UCS: If you’re tempted to think of Cisco‘s Unified Computing System (UCS) as just another blade server — don’t. In fact, if you just want a bunch of blades for your computer room, don’t call Cisco — Dell, HP, and IBM all offer simpler and more cost-effective options. But, if you want an integrated compute farm consisting of blade servers and chassis, Ethernet and Fibre Channel interconnects, and a sophisticated management system, then UCS might be for you….

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