ping to destination ip by using source ip

minipop4747 · 09-06-2012, 03:26 AM

I want to ping destination public ip using source ip in the command line

How can i do that ?

krilleknug · 09-06-2012, 03:52 AM

How do you mean? Do you want to specify on which outgoing ip address/network interface you want to ping the destination?

You can specify the source interface (and address) with this parameter:

-I interface address
Set source address to specified interface address. Argument may be numeric IP address or name of device. When pinging IPv6 link-local address this option is required.

minipop4747 · 09-06-2012, 04:18 AM

As an example think my i need to destination ip 172.16.1.11

and my source ip will be 10.100.1.20

i tried in this way : ping -c 5 -I 10.100.1.20 172.16.1.11

but this won't give the output.

My requirement is i need to ping destination IP that syntax includes the source IP also.

Can you provide proper syntax !

krilleknug · 09-06-2012, 04:47 AM

Ok, what do you mean you dont get any output? No text at all?

I dont have access to a linux terminal at the moment, but what you could do is to specify the network interface to use.
If you type ifconfig you should get a list of all the network interfaces. Then look for the one where your source ip address is at. Then you use that interface name as the parameter to the -I command.

for example:
ping -I eth0 xx.xx.xx.xx

/C

minipop4747 · 09-06-2012, 05:14 AM

Hi krilleknug

I tried your mentioned command syntax before which is ping -I eth0 xx.xx.xx.xx

I won't give any output

krilleknug · 09-06-2012, 05:25 AM

Hi,

Ok, did your interface name was eth0 (from ifconfig)?
I think it will not respond until timing out if no response was given, so it could take a few seconds before there is any output.
Does ping work without the -I parameter?

/C

jschiwal · 09-12-2012, 09:00 PM

Please post your thread in only one forum. Posting a single thread in the most relevant forum will make it easier for members to help you and will keep the discussion in one place. This thread is being closed because it is a duplicate.