Tuesday, October 22, 2013

Cisco ccna exam tutorial using trivial file transfer protocol tftp

Cisco CCNA Exam Tutorial: Using Trivial File Transfer Protocol (TFTP)

If TFTP isn't secure, why use it? Learn the details for your CCNA and real-world success from Chris Bryant, CCIE #12933.

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One of the first things you do when you start studying for the CCNA exam is memorizing a list of port numbers and the protocols that run on those ports. If you're an experienced networker, you know most of the protocols that are mentioned - DNS, DHCP, FTP, SMTP, and so on. But there's one protocol that you might not have experience with, but is actually vital for CCNA exam success and success in working with Cisco routers and switches, and that's TFTP - Trivial File Transfer Protocol.

TFTP is basically FTP's non-secure relative. There are no passwords, no authentication scheme, no nothing! As someone once told me, "If I'm transferring my files, there's nothing 'trivial' about it."

Great. So youre thinking, What the heck do we use TFTP for, anyway?

TFTP is used in the Cisco world to perform IOS upgrades and to save configs to a TFTP Server. Cisco routers can themselves serve as TFTP servers, or you can use a workstation to fill that role.

If you needed to copy an IOS image to a router, for


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