Passing Cisco CCNA And CCNP Examinations: Ping And Prolonged Ping
I often notify CCNA and CCNP candidates which you do your very best Mastering when you screw a thing up. I typically get a amusing glimpse proper immediately after I state that, but the one way to build your Cisco troubleshooting expertise – the skills you’ll really need to go your Intro, ICND, and CCNP exams – is by essentially correcting configurations. Considering the fact that your employer will have a dim view of you working towards these abilities on her or his network, you superior accomplish that on your private home lab!
Three crucial applications for networking and CCNA/CCNP Test accomplishment are ping, extended ping, and traceroute. Today we’re planning to Have a look at the ping that we’re accustomed to working with for LAN troubles, as well as the extended ping.
We’re all aware of “basic” ping, in which you utilize the ping command followed by the IP handle you should ensure IP connectivity with. After you’ve obtained connectivity, you will note 5 exclamation details, as viewed right here:
R1#ping 172.twelve.123.two
Type escape sequence to abort.
Sending five, a hundred-byte ICMP Echos to 172.12.123.2, timeout is 2 seconds:
!!!!!
Results level is one hundred pc (five/five), spherical-trip min/avg/max = 68/68/72 ms
The default resource IP address for ping will be the IP handle closest towards the vacation spot IP address. Other defaults – five ICMP packets will probably be sent (that’s why you see 5 exclamation factors), plus they’re sent two seconds aside.
That’s high-quality For lots of primary situations, but while you progress by way of your networking vocation and most advanced situations in your CCNA / CCNP studies, you will want to improve Many of these defaults. What could you need to do in case you wanted to send out 10,000 pings? Imagine if you necessary your router’s loopback tackle for being the resource IP handle for that 먹튀검증 pings? Imagine if you needed to deliver them five seconds aside, as an alternative to two?
That’s where by extended ping comes in. To make use of prolonged ping, just style “ping” and strike enter. (Be aware that You can not use extended ping in person exec mode – you must be in enable method to take action.)
R1>ping
% Incomplete command.
“incomplete command” indicates that the router is looking forward to an IP tackle; you could’t use prolonged ping in consumer exec mode.
R1>empower
R1#ping
Protocol [ip]:
Concentrate on IP address: 172.sixteen.123.1
Repeat count [five]: one thousand
Datagram measurement [one hundred]:
Timeout in seconds [2]:
Prolonged commands [n]: y
Supply tackle or interface: loopback0
Kind of service [0]:
Established DF bit in IP header? [no]:
Validate reply data? [no]:
Facts pattern [0xABCD]:
Free, Demanding, Record, Timestamp, http://edition.cnn.com/search/?text=먹튀검증 Verbose[none]:
Sweep range of dimensions [n]:
Sending 1000, a hundred-byte ICMP Echos to 172.sixteen.123.one, timeout is two seconds:
Packet despatched having a supply handle of one.one.1.one
…………………………………
In this example, I sent one thousand ICMP packets to an tackle that doesn’t exist, so I'm getting intervals in place of exclamation factors. This illustration exhibits you the numerous options you have got with extended ping.
Since I’ve sent These 1000 pings, Permit’s say that I want to halt that approach. At first of The essential ping output, you see this phrase: