I often tell CCNA and CCNP candidates that you do your best learning when you screw something up. I often get a funny look right after I say that, but the only way to develop your Cisco troubleshooting skills - the skills you'll need to pass your Intro, ICND, and CCNP exams - is by actually fixing configurations. Since your employer will take a dim view of you practicing these skills on his or her network, you better do so on your home lab!
Laptop Battery Three essential tools for networking and CCNA/CCNP exam success are ping, extended ping, and traceroute. Today we're going to take a look at the ping that we're used to using for LAN issues, and the extended ping.
Utilize blog and ping to get sites indexed quickly by the search engines. By notifying popular ping servers monitored by blog search services such as Google Blog Search, you attract search engine spiders to a blog. A blog can automatically be setup to ping certain web sites. An easy method of doing this is by adding the Pingomatic service to the sites to ping in the blog software which pings many popular ping servers at once.
Thinkpad We're all familiar with "basic" ping, where you use the ping command followed by the IP address you want to confirm IP connectivity with. When you've got connectivity, you will see five exclamation points, as seen here:
Before making a major investment into a computer certification, consider the steps that a vendor does or does not make to protect your investment. Computer certifications have helped me tremendously in building my IT career. By asking the right questions, and taking a hard look at your motives and plans before pursuing a given certification, they can do the same for you. Chris Bryant, 12933, is the owner of The Bryant Advantage ( //www.thebryantadvantage.com), home of free CCNA and CCNP tutorials, The Ultimate CCNA Study Package, Ultimate CCNP Study Packages, and CCNA CBT video training. Pass the CCNA exam, BSCI exam, and BCMSN exam with Chris Bryant, 12933!
Microsoft
R1#ping 172.12.123.2
ping 10.0.0. ping myserver.mycompany.com Make sure that radmin server is running on the remote computer. Verify that you are connecting to the correct port on which the radmin server is waiting for the incoming connection. Check the firewall settings on the remote computer. You can also examine Radmin s logfile.txt to discover what's causing the problem.
Laptop Computers Type escape sequence to abort.
Interesting traffic brings the link up; by default, any traffic can cross the link once it's up; a lack of interesting traffic is what brings the link down. In Part II of this tutorial, we'll take a look at some common scenarios that make the ISDN link stay up, and what can be done about it. Chris Bryant, 12933, is the owner of The Bryant Advantage ( //www.thebryantadvantage.com), home of free CCNA and CCNP tutorials, The Ultimate CCNA Study Package, Ultimate CCNP Study Packages, and CCNA CBT video training. Pass the CCNA exam, BSCI exam, and BCMSN exam with Chris Bryant, 12933!
Laptop Computer Sending 5, 100-byte ICMP Echos to 172.12.123.2, timeout is 2 seconds:
PC Pitstop's ping test can help you determine if poor performance is the result of your computer, your connection, or Internet congestion.
Desktop Computer !!!!!
Notebooks Success rate is 100 percent (5/5), round-trip min/avg/max = 68/68/72 ms
Lenovo The default source IP address for ping is the IP address closest to the destination IP address. Other defaults - five ICMP packets will be sent (that's why you see five exclamation points), and they're sent two seconds apart.
Hard Drive That's fine for many basic situations, but as you progress through your networking career and most advanced scenarios in your CCNA / CCNP studies, you will want to change some of these defaults. What could you do if you wanted to send 10,000 pings? What if you needed your router's loopback address to be the source IP address for the pings? What if you wanted to send them five seconds apart, instead of two?
Travelstar That's where extended ping comes in. To use extended ping, just type "ping" and hit enter. (Note that you cannot use extended ping in user exec mode - you must be in enable mode to do so.)
Gateway R1>ping
Laptop Parts % Incomplete command.
Software "incomplete command" indicates that the router is waiting for an IP address; you can't use extended ping in user exec mode.
Hard Drives R1>enable
Electronics R1#ping
Canon Protocol [ip]:
Desktop Pc Target IP address: 172.16.123.1
Desktop Computers Repeat count [5]: 1000
Think Pad Datagram size [100]:
Repair Timeout in seconds [2]:
Data Recovery Extended commands [n]: y
Cisco Source address or interface: loopback0
Keyboard Type of service [0]:
Monitor Set DF bit in IP header? [no]:
Desktop Validate reply data? [no]:
Infosys Data pattern [0xABCD]:
Refurbished Laptops Loose, Strict, Record, Timestamp, Verbose[none]:
Wipro Sweep range of sizes [n]:
Lap Top Type escape sequence to abort.
Refurbished Sending 1000, 100-byte ICMP Echos to 172.16.123.1, timeout is 2 seconds:
Memory Packet sent with a source address of 1.1.1.1
Intel .......................................
As400 In this example, I sent 1000 ICMP packets to an address that doesn't exist, so I am getting periods instead of exclamation points. This illustration shows you the many options you have with extended ping.
Averatec Now that I've sent those 1000 pings, let's say that I want to stop that process. At the beginning of the basic ping output, you see this phrase:
Hardware Type escape sequence to abort.
Dual Xeon This escape sequence works for ping, extended ping, and traceroute. Funny thing, though - Cisco doesn't tell you what the escape sequence is! One day, this will really come in handy. The escape sequence is , TWICE in rapid succession.
Storage After I used it in this example, the pings stopped and I got this message:
Seagate Success rate is 0 percent (0/192)
Computer Sales The ping stopped after 192 ICMP packets were sent.
Computer Hardware This keystroke takes a little practice, so practice it in your home lab. Knowing how to use extended ping will really come in handy on your CCNA and CCNP exams as well as your real-life networking job, and knowing how to stop an extended ping will as well!
Printers
Technology Chris Bryant, CCIE #12933, is the owner of The Bryant Advantage (http://www.thebryantadvantage.com), home of free CCNA and CCNP tutorials, The Ultimate CCNA Study Package, Ultimate CCNP Study Packages, and CCNA CBT video training. Pass the CCNA exam ,BSCI exam , and BCMSN exam with Chris Bryant, CCIE #12933!
Mainframe For a copy of his FREE "How To Pass The CCNA" or "How To Pass The CCNP" ebook and receive a FREE CCNA and CCNP question every day, just visit the website and claim your free copies!
[ Comment, Edit or Article Submission ]
