I was discussing the extended ping option with
a collegue of mine. we started discussing the "source Ip address or interface" line within the extended ping command set. He claimed that the source IP address or interface had to be configured on the router. I claimed that the source IP address could be any address that as within a valid range that any IP address configured on the router.
Can anyone please clarify this?
Thanks for your help.
The IP address you are using as the source should be the IP address on the
router. You cannot use a random IP in the subnet. If you go to a firewall
(PIX/ASA), there is an option for packet tracer where you can use any random
IP as the source.
Hope this helps.