From owner-freebsd-questions Thu Nov 22 13:20:28 2001 Delivered-To: freebsd-questions@freebsd.org Received: from molly.intercom.net (molly.intercom.net [216.240.106.84]) by hub.freebsd.org (Postfix) with ESMTP id B085B37B41A for ; Thu, 22 Nov 2001 13:20:09 -0800 (PST) Received: from cross (hh1105097.direcpc.com [206.71.105.97]) by molly.intercom.net (8.12.1/8.12.1) with SMTP id fAMLKtm4010574; Thu, 22 Nov 2001 16:20:57 -0500 (EST) Message-ID: <001501c1739b$4f833ad0$0273150a@woodstock.lanalyse.com> From: "Ron Hensley" To: "P K" , References: <005301c173b5$96d8a5e0$0100a8c0@cr1034264a> Subject: Re: arp -a Date: Thu, 22 Nov 2001 16:18:54 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000E_01C17371.612C33B0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG This is a multi-part message in MIME format. ------=_NextPart_000_000E_01C17371.612C33B0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 You only get MAC Addresses of devices on your own wire. When you ping a remote site like yahoo.com, your computer doesnt know how to get there, as yahoo.com's server isnt on your local wire. Thus it uses your default route. The MAC of your Router or Default Route Device would appear in your arp tables. - From there, that router learns how to get to the second router along the way and so on, until it makes it to yahoos LAN and then that WWW server. However your computer cant see any of that and never learns any MACs except devices talking on your own wire. - ---------------------------------------------------------------------- - ------- Ron Hensley (ronh@intercom.net) CCNA #10082337 - ---------------------------------------------------------------------- - ------- - ----- Original Message -----=20 From: P K=20 To: freebsd-questions@FreeBSD.ORG=20 Sent: Thursday, November 22, 2001 7:27 PM Subject: arp -a Hi all I ping yahoo.com. I couldn't get mac address from arp -a Why? How do I get the mac address? TIA -----BEGIN PGP SIGNATURE----- Version: PGPfreeware 6.5.8 for non-commercial use iQA/AwUBO/1rvFFb04N5DzUjEQLc0gCeO1WtwngBoZ5ThHZQ0nzygAhL/W8An0Ck TNJdFX3AcPRi+zhjTPMo8saJ =3Da4IO -----END PGP SIGNATURE----- ------=_NextPart_000_000E_01C17371.612C33B0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

-----BEGIN PGP SIGNED = MESSAGE-----
Hash:=20 SHA1

You only get MAC Addresses of devices = on your own=20 wire.
When you ping a remote site like yahoo.com, your computer = doesnt=20 know
how to get
there, as yahoo.com's server isnt on your local = wire. Thus=20 it uses
your default route.
The MAC of your Router or Default = Route Device=20 would appear in your
arp tables.
- From there, that router learns = how to=20 get to the second router along
the way and so on, until it makes = it
to=20 yahoos LAN and then that WWW server.

However your computer cant see any of = that and=20 never learns any MACs
except devices talking on your own = wire.

-=20 -----------------------------------------------------------------------=20 -------
Ron Hensley (ronh@intercom.net) CCNA = #10082337
-=20 -----------------------------------------------------------------------=20 -------
- ----- Original Message -----
From: P K
To: freebsd-questions@FreeBSD.O= RG=20
Sent: Thursday, November 22, 2001 7:27 PM
Subject: arp = -a

Hi all

I ping yahoo.com. I couldn't get mac address from arp = -a
Why?
How do=20 I get the mac address?

TIA

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Version: PGPfreeware 6.5.8 for=20 non-commercial use <http://www.pgp.com>

iQA/AwUBO/1rvFFb04N5DzUjEQLc0gCeO1WtwngBoZ5ThHZQ0nzygAhL/W8An0Ck
= TNJdFX3AcPRi+zhjTPMo8saJ
=3Da4IO
-----END=20 PGP SIGNATURE-----

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