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Passing Cisco CCNA And CCNP Tests: Ping And Extended Ping
I usually notify CCNA and https://socialhattori.com/ CCNP candidates that you simply do your best Discovering once you screw some thing up. I generally have a amusing glimpse correct immediately after I say that, but the only real method to build your Cisco troubleshooting competencies – the talents you’ll should pass your Intro, ICND, and CCNP tests – is by in fact fixing configurations. Because your employer will have a dim check out of you practising these techniques on his or her community, you greater achieve this on your home lab!
A few necessary resources for networking and CCNA/CCNP Test success are ping, extended ping, and traceroute. Today we’re planning to Have a look at the ping that we’re used to making use of for LAN difficulties, and the extended ping.
We’re all accustomed to “essential” ping, where you use the ping command accompanied by the IP address you would like to affirm IP connectivity with. Whenever you’ve got connectivity, you will see five exclamation points, as viewed here:
R1#ping 172.twelve.123.2
Sort escape sequence to abort.
Sending five, a hundred-byte ICMP Echos to 172.12.123.two, timeout is 2 seconds:
!!!!!
Results level is one hundred pc (five/five), round-journey min/avg/max = sixty eight/68/seventy two ms
The default source IP address for ping is definitely the IP handle closest on the destination IP deal with. Other defaults – 5 ICMP packets will probably be despatched (that’s why you see 5 exclamation details), and they’re sent two seconds apart.
That’s high-quality For lots of basic cases, but while you progress by way of your networking vocation and most advanced eventualities inside your CCNA / CCNP scientific tests, you'll want to transform some of these defaults. What could you are doing in case you needed to send out 10,000 pings? Let's say you necessary your router’s loopback deal with to get the resource IP handle for your pings? Imagine if you wanted to send them five seconds apart, instead of two?
That’s the place extended ping is available in. To work with extended ping, just type “ping” and hit enter. (Note that You can't use prolonged ping in user exec mode – you must be in help manner to do so.)
R1>ping
% Incomplete command.
“incomplete command” implies that the router is looking forward to an IP tackle; you'll be able to’t use extended ping in consumer exec manner.
R1>allow
R1#ping
Protocol [ip]:
Focus on IP address: 172.16.123.1
Repeat count [five]: 1000
Datagram sizing [one hundred]:
Timeout in seconds [two]:
Extended commands [n]: y
Source tackle or interface: loopback0
Style of services [0]:
Set DF bit in IP header? [no]:
Validate reply facts? [no]:
Data sample [0xABCD]:
Unfastened, Strict, File, Timestamp, Verbose[none]:
Sweep choice of measurements [n]:
Sending a thousand, 100-byte ICMP Echos to 172.sixteen.123.one, timeout is 2 seconds:
Packet despatched with a source tackle of one.1.one.1
…………………………………
In this instance, I despatched 1000 ICMP packets to an deal with that doesn’t exist, so I'm receiving intervals in place of exclamation details. This illustration demonstrates you the numerous choices you have with prolonged ping.
Given that I’ve despatched People 1000 pings, Permit’s state that I need to halt that procedure. At the beginning of The essential ping output, the thing is this phrase: