Re: Pinging an entire Class B
R.Whittington (r.whittington@dl.ac.uk)
Thu, 11 Jul 1996 11:01:33 +0100
Juergen Schoenwaelder wrote:
>
> Sam McLane <sam@olympus.is.temple.edu> wrote:
>
> > I need to ping an entire class B in order to load my routers arp cache
> > with all mac-ip pairs. I am using Solaris 2.5 and fping will not
> > compile for me. ntping will doit but i cannot figure out the
> > correct syntax to do say an entire class C at once. I do not care
> > about the results. I just want the sytem in the arp cache.
>
> The simplest way to do this is to use the discover script contained in
> the examples directory of the scotty distribution. Just call it with a
> class B or class C like IP address prefix ("discover -icmp 155.247.19"
> or "discover -icmp 155.247"). The script will always probe a class C
> like subnet in parallel. Use the options to control the speed and the
> load on the network.
>
> Juergen
if all you want to do is load arp tables try pinging the IP
broadcast address, our network is 148.79 thus:
ping 148.79.255.255
cripples our network for a second or two!
(don't tell the users :-)
--
Royd Whittington | Tel: (+44) (0)1925 603226
Daresbury Laboratory | FAX: (+44) (0)1925 603230
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