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When we use ping, the option -i is referred as the interval time between sending each packet..
Is this interval is the same as 'Inter Frame Gap(IFG)'?? As far as I have heard, IFG is introduced in the Physical layer. So using this option can we really change the Inter Frame Gap??
If I use 'ping -i 0' which means that the interval is 0, I still get some value of 18.3 or somethin as ipg in the ping output.
So IFG and 'ping -i' are same or not??
-i is the sending interval. That's all. You specify 2, the pings are started at 2 second intervals.
However, if you specify -i 0 (with a specified count i.e. -c 5 so you don't cause a proper flood), then ping will work out and report the ipg to you as it's trying to send all five ping packets at once.
Quote:
$ ping -i 1 -c 5 <host>
PING <host> 56(84) bytes of data.
64 bytes from <host>: icmp_req=1 ttl=64 time=0.000 ms
64 bytes from <host>: icmp_req=2 ttl=64 time=0.000 ms
64 bytes from <host>: icmp_req=3 ttl=64 time=0.000 ms
64 bytes from <host>: icmp_req=4 ttl=64 time=0.000 ms
64 bytes from <host>: icmp_req=5 ttl=64 time=0.000 ms
--- <host> ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4004ms
rtt min/avg/max/mdev = 0.000/0.000/0.000/0.000 ms
Quote:
$ ping -i 0 -c 5 <host>
PING <host> 56(84) bytes of data.
64 bytes from <host>: icmp_req=1 ttl=64 time=0.000 ms
64 bytes from <host>: icmp_req=2 ttl=64 time=0.000 ms
64 bytes from <host>: icmp_req=3 ttl=64 time=0.000 ms
64 bytes from <host>: icmp_req=4 ttl=64 time=0.000 ms
64 bytes from <host>: icmp_req=5 ttl=64 time=0.000 ms
What is meant by the time in Bold? Does it mean the total time for which the ping packets are transmitted?
The IPG value is shown in the output. Why does the IPG value change when it is said that it is constant for a interface with a particular speed?
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