Passing Cisco CCNA And CCNP 먹튀검증 Tests: Ping And Prolonged Ping
I frequently convey to CCNA and CCNP candidates that you simply do your best Understanding any time you screw a little something up. I usually get a amusing appear correct right after I say that, but the only real approach to build your Cisco troubleshooting skills – the abilities you’ll really need http://www.bbc.co.uk/search?q=먹튀검증 to pass your Intro, ICND, and CCNP tests – is by really fixing configurations. Because your employer will have a dim check out of you training these abilities on her or his network, you much better achieve this on your home lab!
3 crucial resources for networking and CCNA/CCNP exam success are ping, prolonged ping, and traceroute. Nowadays we’re going to Consider the ping that we’re accustomed to working with for LAN difficulties, and also the extended ping.
We’re all accustomed to “essential” ping, where you make use of the ping command accompanied by the IP handle you ought to verify IP connectivity with. Any time you’ve received connectivity, you will note 5 exclamation points, as observed here:
R1#ping 172.twelve.123.two
Type escape sequence to abort.
Sending five, one hundred-byte ICMP Echos to 172.twelve.123.2, timeout is 2 seconds:
!!!!!
Achievement rate is one hundred pc (5/five), spherical-excursion min/avg/max = 68/68/72 ms
The default source IP handle for ping may be the IP deal with closest on the location IP tackle. Other defaults – five ICMP packets will be despatched (that’s why the thing is five exclamation points), and so they’re sent two seconds apart.
That’s fantastic For lots of primary situations, but when you progress through your networking job and many Superior scenarios as part of your CCNA / CCNP studies, you'll want to change Some defaults. What could you need to do in case you needed to deliver ten,000 pings? What if you needed your router’s loopback handle to become the source IP tackle for that pings? What if you wanted to mail them 5 seconds apart, in lieu of two?
That’s in which prolonged ping is available in. To utilize extended ping, just form “ping” and strike enter. (Observe that You can't use extended ping in user exec manner – you must be in permit manner to do so.)
R1>ping
% Incomplete command.
“incomplete command” implies the router is looking forward to an IP handle; you'll be able to’t use extended ping in person exec manner.
R1>help
R1#ping
Protocol [ip]:
Focus on IP handle: 172.16.123.one
Repeat depend [5]: one thousand
Datagram dimensions [100]:
Timeout in seconds [2]:
Extended commands [n]: y
Source address or interface: loopback0
Kind of support [0]:
Established DF little bit in IP header? [no]:
Validate reply details? [no]:
Knowledge pattern [0xABCD]:
Loose, Strict, History, Timestamp, Verbose[none]:
Sweep selection of sizes [n]:
Sending one thousand, 100-byte ICMP Echos to 172.16.123.1, timeout is 2 seconds:
Packet sent by using a supply handle of one.1.1.one
…………………………………
In this instance, I despatched 1000 ICMP packets to an handle that doesn’t exist, so I'm acquiring durations as an alternative to exclamation points. This illustration shows you the numerous alternatives you may have with prolonged ping.
Since I’ve sent People a thousand pings, Allow’s state that I would like to stop that procedure. In the beginning of The essential ping output, the thing is this phrase: