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Re: arp cache issue

To: "Snyder, Ryan" <RSnyder@xxxxxxxxxxxxx>
Subject: Re: arp cache issue
From: Peter Bieringer <pb@xxxxxxxxxxxx>
Date: Tue, 05 Jun 2001 21:14:00 +0200
Cc: "'netdev@xxxxxxxxxxx'" <netdev@xxxxxxxxxxx>
In-reply-to: <AA786FC0001CD51193D600600841E6600B0895@xxxxxxxxxxxxx>
Sender: owner-netdev@xxxxxxxxxxx
Hi,

--On Tuesday, June 05, 2001 01:00:48 PM -0600 "Snyder, Ryan" <RSnyder@xxxxxxxxxxxxx> wrote:

Hello,
  I was wondering if any one can help me, I received this email
address from Alan Cox.

  I am running CheckPoint Firewall under Linux 2.2.19.
Me too on a customers site.

The
Firewall is working fine,
but on the interface that is connected to the Internet via a Cisco
router has over 950
entries in the arp cache.  I understand this is normal, but since
there is only one
route to the Internet, is there a way to not have Linux to an arp
cache lookup, or even
a setting to make the cache size much bigger?
Do you see any reason why you have 950 entries? A short look into the arp cache on a CP on Linux shows me only one entry, the default gateway (also here) Cisco router, nothing else (ok, some permanent for NAT issues, too).

What IP addresses are shown in the ARP chache? Worldwide? Internal ones?

Peter

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