Passing Cisco CCNA And CCNP Tests: Ping And Extended Ping
I normally tell CCNA and CCNP candidates that you do your best Discovering once you screw a thing up. I typically get yourself a funny search appropriate following I mention that, but the one approach to establish your Cisco troubleshooting expertise – the abilities you’ll really need to go your Intro, ICND, and CCNP tests – is by in fact fixing configurations. Given that your employer will have a dim look at of you working towards these competencies on his / her network, you superior accomplish that on your private home lab!
A few essential tools for networking and CCNA/CCNP Test good results are ping, extended ping, and traceroute. Currently we’re planning to Check out the ping that we’re accustomed to utilizing for LAN problems, as well as the prolonged ping.
We’re all aware of “standard” ping, where you use the ping command accompanied by the IP handle you wish to confirm IP connectivity with. Once you’ve obtained connectivity, you will note five exclamation details, as seen below:
R1#ping 172.twelve.123.two
Variety escape sequence to abort.
Sending five, one hundred-byte ICMP Echos to 172.12.123.two, timeout is 2 seconds:
!!!!!
Achievement level is 100% (5/five), spherical-trip min/avg/max = sixty eight/68/72 ms
The default resource IP handle for ping may be the IP 토토사이트 deal with closest to the location IP handle. Other defaults – five ICMP packets is going to be despatched (that’s why you see five exclamation points), and so they’re despatched two seconds aside.
That’s high-quality For several primary conditions, but when you development via your networking profession and most Sophisticated scenarios in the CCNA / CCNP studies, you'll want to alter Some defaults. What could you need to do for those who needed to send 10,000 pings? What if you desired your router’s loopback deal with being the source IP deal with with the pings? What if you wanted to send out them 5 seconds apart, in lieu of two?
That’s where by prolonged ping comes in. To implement extended ping, just sort “ping” and strike enter. (Note that you cannot use prolonged ping in user exec mode – you have to be in enable mode to do so.)
R1>ping
% Incomplete command.
“incomplete command” suggests that the router is expecting an IP tackle; you'll be able to’t use prolonged ping in consumer exec mode.
R1>empower
R1#ping
Protocol [ip]:
Focus on IP address: 172.16.123.1
Repeat count [5]: 1000
Datagram measurement [100]:
Timeout in seconds [2]:
Prolonged instructions [n]: y
Resource deal with or interface: loopback0
Sort of support [0]:
Set DF little bit in IP header? [no]:
Validate reply data? [no]:
Information sample [0xABCD]:
Loose, Stringent, Report, Timestamp, Verbose[none]:
Sweep variety of measurements [n]:
Sending one thousand, one hundred-byte ICMP Echos to 172.sixteen.123.1, timeout is 2 seconds:
Packet sent which has a source tackle of 1.1.one.1
…………………………………
In this instance, I despatched one thousand ICMP packets to an handle that doesn’t exist, so I'm receiving durations in place of exclamation details. This illustration shows you the many choices you may have with extended ping.
Given that I’ve sent All those a http://edition.cnn.com/search/?text=먹튀검증 thousand pings, Permit’s express that I would like to halt that course of action. Originally of The essential ping output, you see this phrase: