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Passing Cisco CCNA And CCNP Examinations: Ping And Prolonged Ping
I frequently inform CCNA and CCNP candidates you do your very best Finding out after you screw anything up. I usually receive a humorous glance right soon after I say that, but the only real method to build your Cisco troubleshooting techniques – the talents you’ll really need to move your Intro, ICND, and CCNP tests – is by essentially repairing configurations. Considering that your employer will take a dim perspective of you practising these techniques on his / her network, you far better achieve this on your house lab!
3 essential equipment for networking and CCNA/CCNP Test achievements are ping, prolonged ping, and traceroute. Currently we’re planning to Have a look at the ping that we’re accustomed to using for LAN troubles, as well as prolonged ping.
We’re all familiar with “standard” ping, in which you make use of the ping command followed by the IP tackle you would like to validate IP connectivity with. If you’ve received connectivity, you will note five exclamation points, as found below:
R1#ping 172.twelve.123.2
Kind escape sequence to abort.
Sending five, one hundred-byte ICMP Echos to 172.twelve.123.two, timeout is two seconds:
!!!!!
Accomplishment amount is 100 percent (5/5), round-journey min/avg/max = 68/sixty eight/72 ms
The default resource IP tackle for ping is the IP handle closest to the location IP tackle. Other defaults – 5 ICMP packets will be despatched (that’s why you see 5 exclamation factors), plus they’re despatched two seconds aside.
That’s fantastic For a lot of primary cases, but while you progress via your networking career and most Innovative scenarios with your CCNA / CCNP research, you will want to change Some defaults. What could you do for those who desired to ship 10,000 pings? Imagine if you needed your router’s loopback address to generally be the supply IP deal with for your https://socialhattori.com/ pings? What if you planned to deliver them five seconds apart, rather than two?
That’s where extended ping is available in. To employ prolonged ping, just sort “ping” and hit enter. (Note that You can't use prolonged ping in user exec mode – you will need to be in enable method to take action.)
R1>ping
% Incomplete command.
“incomplete command” suggests the router is expecting an IP deal with; you are able to’t use extended ping in user exec manner.
R1>help
R1#ping
Protocol [ip]:
Concentrate on IP handle: 172.sixteen.123.one
Repeat rely [5]: one thousand
Datagram dimension [a hundred]:
Timeout in seconds [2]:
Prolonged commands [n]: y
Source handle or interface: loopback0
Style of service [0]:
Set DF bit in IP header? [no]:
Validate reply info? [no]:
Facts sample [0xABCD]:
Unfastened, Stringent, History, Timestamp, Verbose[none]:
Sweep choice of sizes [n]:
Sending one thousand, a hundred-byte ICMP Echos to 172.16.123.one, timeout is two seconds:
Packet despatched that has a resource address of one.1.1.1
…………………………………
In this example, I despatched a thousand ICMP packets to an handle that doesn’t exist, so I am acquiring periods as an alternative to exclamation factors. This illustration demonstrates you the many solutions you have with prolonged ping.
Now that I’ve sent those one thousand pings, Enable’s declare that I would like to halt that course of action. At the start of The essential ping output, you see this phrase: