Passing Cisco CCNA And CCNP Examinations: Ping And Prolonged Ping
I frequently inform CCNA and CCNP candidates which you do your very best Discovering after you screw some thing up. I frequently receive a amusing appear appropriate immediately after I say that, but the sole solution to build your Cisco troubleshooting capabilities – the talents you’ll ought to move your Intro, ICND, and CCNP exams – is https://en.search.wordpress.com/?src=organic&q=먹튀검증 by basically repairing configurations. Since your employer will have a dim see of you working towards these capabilities on her or his network, you far better do this on your property lab!
Three crucial resources for 먹튀검증 networking and CCNA/CCNP Test accomplishment are ping, extended ping, and traceroute. Now we’re intending to Check out the ping that we’re used to employing for LAN problems, and the prolonged ping.
We’re all informed about “primary” ping, where you use the ping command accompanied by the IP address you would like to ensure IP connectivity with. Once you’ve bought connectivity, you will note five exclamation factors, as observed below:
R1#ping 172.12.123.two
Style escape sequence to abort.
Sending five, 100-byte ICMP Echos to 172.twelve.123.two, timeout is two seconds:
!!!!!
Good results rate is 100% (five/five), round-vacation min/avg/max = sixty eight/sixty eight/seventy two ms
The default supply IP handle for ping is definitely the IP deal with closest to your place IP tackle. Other defaults – five ICMP packets will be sent (that’s why you see five exclamation points), plus they’re despatched two seconds apart.
That’s great For several primary scenarios, but when you development as a result of your networking career and many Sophisticated scenarios within your CCNA / CCNP reports, you will need to adjust some of these defaults. What could you do when you wanted to ship ten,000 pings? Imagine if you needed your router’s loopback address to become the source IP handle with the pings? What if you desired to mail them five seconds apart, as an alternative to two?
That’s where extended ping comes in. To utilize prolonged ping, just variety “ping” and strike enter. (Observe that You can not use extended ping in person exec mode – you should be in enable method to do so.)
R1>ping
% Incomplete command.
“incomplete command” indicates the router is looking forward to an IP handle; you'll be able to’t use prolonged ping in user exec manner.
R1>enable
R1#ping
Protocol [ip]:
Focus on IP handle: 172.16.123.one
Repeat rely [5]: 1000
Datagram measurement [100]:
Timeout in seconds [two]:
Extended commands [n]: y
Supply handle or interface: loopback0
Form of provider [0]:
Set DF bit in IP header? [no]:
Validate reply facts? [no]:
Information pattern [0xABCD]:
Free, Rigorous, File, Timestamp, Verbose[none]:
Sweep number of sizes [n]:
Sending one thousand, one hundred-byte ICMP Echos to 172.16.123.1, timeout is 2 seconds:
Packet sent having a supply address of one.one.one.1
…………………………………
In this instance, I despatched a thousand ICMP packets to an tackle that doesn’t exist, so I am obtaining periods as opposed to exclamation factors. This illustration demonstrates you the numerous choices you have got with prolonged ping.
Since I’ve despatched those 1000 pings, Permit’s say that I want to stop that method. In the beginning of The essential ping output, the thing is this phrase: