Cisco CCNA

The Cisco CCNA Discovery Protocol (CDP) sure looks simple enough, but there are quite a few details to know for success on the Cisco CCNA exam. In yourCisco CCNA studies, you’ll be introduced to additional uses for Cisco CCNA CDP, but for now it’s enough to know that Cisco CCNA CDP is designed to give you information regarding directly connected Cisco CCNA routers and Cisco CCNA switches.

Cisco CCNA CDP runs by default between all directly connected Cisco devices. CDP is also a Cisco CCNA protocol - if the directly connected device is not a Cisco device, you won’t see the information you wanted.

The basic Cisco CCNA CDP command to display information about the directly connected neighbor is “show cdp neighbor”.

R2#show cdp neighbor Cisco CCNA

Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge Cisco CCNA

S - Switch, H - Host, I - IGMP, r – Repeater

Device ID Local Intrfce Holdtme Cisco CCNA Capability Platform Port ID

R1 BRI0 167 R 2521 Dialer1

This command is particularly helpful when troubleshooting Cisco CCNA switches. There’s no need to trace wiring in a rack of Cisco CCNA devices to see what routers are connected to a Cisco CCNA switch when show cdp neighbor can be used. In the above output, you can see the remote device’s hostname, what interface on the remote device is connected to the local device, the capability of the remote device, the remote device’s hardware platform, and the local interface that is connected to the remote device.Cisco CCNA

CDP can be disabled at both the global and interface level. To disable CDP at the interface level, run no cdp enable on the interface, and cdp enable to turn it back on Cisco CCNA.

cdp timer defines how often CDP packets are transmitted, and cdp holdtime defines how long a device will hold a received packet.Cisco CCNA

To turn CDP off for the entire router, run no cdp run. To view the current global status of CDP, run show cdp.
One of the major topics on your Cisco CCNA and CCNP exams is Frame Relay. Additionally, Frame Relay is one of the most popular WAN technolgies in today’s networks. Getting hands-on experience with Frame Relay in Cisco networks isn’t just a good idea, it’s a necessity. Let’s face it, your employer is going to get a little touchy if you start experimenting with your network’s Frame Relay setup.

To practice all your important Frame Relay commands for your exams, you need a working Frame Relay cloud in your home lab. A production network’s Frame cloud consists of a lot of Frame switches, but if you choose wisely, a single Cisco router can act as your home lab’s entire Frame cloud!

Before we look at the configuration of such a Cisco CCNA router (hereafter referred to as a “frame relay switch”), let’s look at the physical requirements.

The more serial ports you have, the better. You should get a router with at least four serial ports. For frame switching purposes, it doesn’t matter if the ports are synchronous or asynchronous - you just need the ports.

You will also need some Cisco CCNA DTE/DCE cables. The Cisco CCNA DCE end of the cables will be connected to the frame switch.

A great configuration for a CCNA practice lab is three routers that serve as “production” Cisco CCNA routers, and a 4th router as a frame relay switch. (You’ll want an access server as well, but that’s another article.)

What I use in my student and customer pods is a setup where R1 is connected to the frame switch’s S1 port, R2 is connected to S2 on the frame switch, and R3 is connected to the frame Cisco CCNA switch’s S3 port.

Now comes the tricky part - the configuration. A frame relay switch’s config can be hard to find, so here’s a copy of mine. Pay particular attention to the config on ports Cisco CCNA s1, s2, and s3.

Now , I introduce some course about  Cisco Certified Entry Networking Technician.

Looke here,friend.The table below shows the differents paths and level for the general certification tracks. The specialist certifications are not listed in the table.

Here are some people about Cisco CCNA Career question， only for reference.

No.01 David

I have a question u might think its a stupid but its always bothering me am planning to do ccna exam but where ever u try for a job they ask you for a experience ，I don’t know where to start and what is the best job u should look for after u do ccna ?

No.02 Jane

Experience in IT at all is excellent - many people start with desktop support or pulling cables for network gear. I’ve done time in the “trenches” supporting desktops and while it isn’t fun, it teaches you a lot of troubleshooting fundamentals, lots of processes and down the line when you’re the senior network guy, you better know what questions to ask the desktop guy when they’re reporting a problem!!

A Cisco CCNA certification alone won’t get you a job - it’s just a piece of paper saying Cisco thinks you’re at a certain level with your technical knowledge. Getting the job is up to you! Best of luck finding a break, sounds like you’re eager to get into some routers!

No.03 smirk

Thank you for your reply and yeah i would love to get into routers job and desktop help job also ask for experience but I know where to start u cannot get a experience from a mothers womb unless they giv u a job where can u get more experience from its hard anyway hope everything goes well.

No.04 Travis

You can also look into apprenticeships or internships - offer your services for lower cost/free to non-profits or the like - somewhere where help is always welcomed. You can also check college IT desktop support or a place where learning is centric to the environment - they are often very forgiving on the learning curve – more so than a fast paced corporate environment where results are tantamount.

No.05 Andrew

You may look into the Cisco Learning Network  for possible career opportunities.

No.06 Wang Yu

The Job portal is a great addition to the site, hopefully it will cover other countries in the future. There’s no results for Singapore, so I guess I’ll stick to my local job portals for now.

No.07 Fang Mr.Zhou

That is a rhetorical situation isn’t it. Trying to find a job without experience and trying to get experience without a job. You have to break the cycle. Others have and you will too. Unfortunately, we have to be flexible in our approach when new to a field or area of interest. Take opportunities as they present themselves. Also, document what you do to some degree. If you have Cisco CCNA Network IT Certification. That will help you quantify on a go forward basis as you find more appealing opportunities.

In recent years, with the development of network technology, CCNA certification has become a global standard for many renowned IT companies.
Cisco CCNA Certification helps you to demonstrate to stakeholders that your business is run effectively
The process of achieving and maintaining the CCNA certification also helps ensure that you are continually improving and refining your activities
The regular assessment process will improve staff responsibility, commitment and motivation
CCNA Certification can improve overall performance, remove uncertainty and widen market opportunities