[Click] Click newbie question - ping program

[Eddie Kohler]

Hi David,

Running real pings, i.e., ICMP echo messages, is not trivial at user 
level.  This is because you need to install firewall rules that prevent 
the kernel from processing the pings as well.

I've just added a KernelFilter element, and a SNIFFER false optional 
argument to FromDevice, that will handle this for you on Linux 
automatically.  See conf/test-ping-userlevel.click in the current git 
repository.

Eddie


Li, W David wrote:
> Hello,
> 
>  
> 
> Is there any example code that sends continuous ping messages from one
> click router to another on a different machine? I am looking for user
> level code. 
> 
> Thanks.
> 
>  
> 
>  
> 
> -David
> 
>  
> 
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