I've found that if one of the DHCP servers at the head end is unable to
find a route to other nodes it's expecting, an ARP flood will occur (at
least with @home and other providers) as the routers try to figure out
where everyone is. Since they don't receive the expected response, they
keep retransmitting until the problem is fixed.
Normally this tells me that the upstream connection is screwed up and
not to expect ANY successful connections to the internet outside of my
ISP.
It may be that they have a somewhat localized problem that is not fully
impacting you.
I'd not worry too much about it. While annoying (I wish you could see
the traffic on mine!) it doesn't really affect your throughput, as your
machine will only respond if it is getting a REAL arp request to it.
You could filter these out, but why bother? You computer doesn't answer
anyway.
-JMS
-----Original Message-----
From: 'Glenn Johnson' [mailto:[EMAIL PROTECTED]]
Sent: Sunday, August 05, 2001 1:33 AM
To: Jose M. Sanchez
Cc: 'Brandon Caudle'; [EMAIL PROTECTED]
Subject: Re: [expert] Re: mysterious incoming packets
On Sun, Aug 05, 2001 at 01:06:12AM -0400, Jose M. Sanchez wrote:
> It's unlikely that this is a problem given the relatively ARP low rate
> you are getting.
>
> A normal Cable modem "node" may have over 10,000 users.
>
> The head-end system has to update it's table of available (connected)
> IP's almost constantly.
>
> If you call the cable company, all you are going to get will be a
>
> "yeah, well, this is normal." response...
Well, that may be the case. The thing is though, it is not normal. I
have had this cable modem service for about a year and this is the first
time I have seen this behavior. Even today, this morning everything was
normal (no activity) then at about noon CST the arp requests started
flooding in.
--
Glenn Johnson
[EMAIL PROTECTED]
