From owner-freebsd-questions Sun Mar 16 8:24:41 2003 Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id CF0B637B401 for ; Sun, 16 Mar 2003 08:24:38 -0800 (PST) Received: from mailout.informatik.tu-muenchen.de (mailout.informatik.tu-muenchen.de [131.159.0.5]) by mx1.FreeBSD.org (Postfix) with ESMTP id B9CCE43F3F for ; Sun, 16 Mar 2003 08:24:37 -0800 (PST) (envelope-from barner@in.tum.de) Received: from mailrelay1.informatik.tu-muenchen.de (mailrelay1.informatik.tu-muenchen.de [131.159.254.5]) by mailout.informatik.tu-muenchen.de (Postfix) with ESMTP id D9AF76135 for ; Sun, 16 Mar 2003 17:24:36 +0100 (MET) Received: from mail.informatik.tu-muenchen.de (mail.informatik.tu-muenchen.de [131.159.0.26]) by mailrelay1.informatik.tu-muenchen.de (Postfix) with ESMTP id CE6507947 for ; Sun, 16 Mar 2003 17:24:36 +0100 (MET) Received: from zi025.glhnet.mhn.de (unknown [129.187.19.157]) by mail.informatik.tu-muenchen.de (Postfix) with ESMTP id B34506CB10 for ; Sun, 16 Mar 2003 17:24:36 +0100 (MET) Received: by zi025.glhnet.mhn.de (Postfix, from userid 1000) id 77C3636B69; Sun, 16 Mar 2003 17:24:35 +0100 (CET) Date: Sun, 16 Mar 2003 17:24:35 +0100 From: Simon Barner To: freebsd-questions@freebsd.org Subject: Re: Too many collisions on network? Message-ID: <20030316162435.GA1658@zi025.glhnet.mhn.de> References: <005d01c2ebcb$82b343b0$1502a8c0@blacktrap.net> <20030316152335.GA1434@zi025.glhnet.mhn.de> <002201c2ebd3$92d0a7d0$1502a8c0@blacktrap.net> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="FL5UXtIhxfXey3p5" Content-Disposition: inline In-Reply-To: <002201c2ebd3$92d0a7d0$1502a8c0@blacktrap.net> User-Agent: Mutt/1.5.3i 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 --FL5UXtIhxfXey3p5 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable > root@charon:/root# ifconfig -m fxp0 > fxp0: flags=3D8843 mtu 1500 > inet xxx.xxx.191.100 netmask 0xfffffff0 broadcast xxx.xxx.191.111 > inet xxx.xxx.191.101 netmask 0xffffffff broadcast xxx.xxx.191.101 > ether 00:e0:81:23:c5:32 > media: Ethernet autoselect (10baseT/UTP) > status: active > supported media: > media autoselect > media 100baseTX mediaopt full-duplex > media 100baseTX > media 10baseT/UTP mediaopt full-duplex > media 10baseT/UTP > media 100baseTX mediaopt hw-loopback >=20 > It seems that fxp(4) supports full-duplex but that it is currently=20 > disabled, and I guess this is because the other end of the wire doesn't > support it, since the media has been autoselected? Yes, it seems to be running in half-duplex mode. Even if you are connected = to a switch that supports full-duplex (which seems not to be the case since auto-negotiation selected h-d), this setting is fine since full-duplex won't bring you a huge performance gain in most of the situations. > I wouldn't be too eager to do tests with this setting since this is a > production server and I have no direct physical access to it, so shutting > down the only interface by mistake is *not* an option ;-) I understand that :-) > But if I was to change it, how would I go about this without shutting down > fxp0? 'ifconfig fxp0 media 10baseT/UTP mediaopt full-duplex' ?? Yes, but I have never done that remotely (my FreeBSD machine is just under = my desk :-) Don't know whether this works over an ssh connection for example. = I am sure somebody else from the list has more experience in this regard ... Simon --FL5UXtIhxfXey3p5 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (FreeBSD) iD8DBQE+dKVDCkn+/eutqCoRAhUrAJ9o/HZrDif31DKhc3LC9UP18dD7wQCgxi9u LDDILjIpZKEDOSm73I85Q6A= =f5/D -----END PGP SIGNATURE----- --FL5UXtIhxfXey3p5-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message