In a nutshell: CEF is a method of building a Forwarding Table in RAM (and later, on individual cards which support it (distributed CEF)) for making forwarding decisions in the "fast" interrupt path, rather than writing packets into an input queue to be serviced the "traditional" process switched way by a seperate "IP Input" process.
It gets more complicated than that, but thats the general gist of things.
You get IOS from Cisco web site. The link that Mohammed provides is a good way to get there. Or from the main home page you can login, and under the support tab there is a link for download software.
Note that to download software you must be a registered user on the Cisco site and your profile must have software download privileges (usually dependent on having equipment with a maintenance agreement with Cisco).
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
Im studying the 100-105 book by Odom and am currently on the topic of Port security. I purchased a used 2960 and I'm trying to follow a...
While deploying a number of 18xx/2802/3802 model access points (APs), which run AP-COS as their operating platform. It can be observed on some occasions that while many of their access points were able to join the fabric WLC withou...
I am going to design and build an LAN network under a tunnel underground with long distance between the switches.
I will have 2 Catalyst switches and 8 Industrial IE3000, and they will be connected with fiber.
For now I am planning on use Layer-2 s...