Jan de Jongh wrote:
>
> Richard Adams wrote:
>
> > According to Mihai Stanciu: While burning my CPU.
> > >
> > > hello all,
> > >
> > > I have the folowing problem: when I try a ping -i 5 <some.station>, BEFORE
> > > the pinging starts, the system sends some ARP packets in order to find out
> > > the address of the partner. Howerver, it sends these ARP packets _way_ too
> > > fast, more than one per second... when it gets the answer, the normal (and
> > > slow, as intended) pings are sent without problems.
> > >
> > > Why does it send the ARP requests so fast ? it behavers like it is on
> > > Ethernet, not on radio. If it sent only one per 5 seconds, say, the other
> > > station may have the time to answer it so that one ARP is enough.
> >
> > Thats possably due to you not setting the IRTT with the route command.
> > route add <host> mss 256 window 944 irtt 5000 <ifc>
> > Add a route to host with a maximum Transmission size of 256 with a window of
> > 4 packets and a Initial round trip time of 5 seconds.
> > man route will explain.
>
> Hi all,
>
> Just curious. Does 'irtt' indeed affect this? According to 'man route'
> [on a RH 5.2 system] it only affects TCP connections.
> Does it also work on ARP?
> If so, the manual page should be update IMO.
>
No, it will not. irtt does not affect ARP.
Gruss,
Matthias
