This message generated a parse failure. Raw output follows here. Please use 'back' to navigate. From devnull@lkml.org Thu Apr 25 17:51:24 2024 Delivery-date: Tue, 14 Mar 2006 16:30:17 +0100 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751460AbWCNP3R (ORCPT ); Tue, 14 Mar 2006 10:29:17 -0500 Received: from mail.infrasupportetc.com ([66.173.97.5]:47975 "EHLO mail733.InfraSupportEtc.com") by vger.kernel.org with ESMTP id S1751418AbWCNP3Q convert rfc822-to-8bit (ORCPT ); Tue, 14 Mar 2006 10:29:16 -0500 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT Subject: RE: Router stops routing after changing MAC Address content-class: urn:content-classes:message X-MimeOLE: Produced By Microsoft Exchange V6.5 Date: Tue, 14 Mar 2006 09:30:25 -0600 Message-Id: <925A849792280C4E80C5461017A4B8A20321FD@mail733.InfraSupportEtc.com> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: Router stops routing after changing MAC Address Thread-Index: AcZHZjB9yiczdsUbRiak9CXAdmXMSQAE8wKQ From: "Greg Scott" To: "linux-os \(Dick Johnson\)" , "Bart Samwel" Cc: "Rick Jones" , "Chuck Ebbert" <76306.1226@compuserve.com>, "linux-kernel" , , "Alan Cox" , "Simon Mackinlay" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org Yet I have real-world examples I've seen with my own eyes where MAC Address problems have messed up bridged networks. I posted some of those here yesterday. Good old Ethernet MAC Addresses can and do play a real role in these wide area networks. Don't believe me? Try it yourself. Find a LAN connected to the Internet via bridged DSL or cablemodem with a real firewall in place. Swap the firewall and wait...and wait...and wait some more for ARP caches to clear on the other end. When nothing changes but the passage of time and traffic starts to flow again - and the Internet service is bridged not routed - give me another explanation besides ARP caches. - Greg -----Original Message----- From: linux-os (Dick Johnson) [mailto:linux-os@analogic.com] Sent: Tuesday, March 14, 2006 6:53 AM To: Bart Samwel Cc: Greg Scott; Rick Jones; Chuck Ebbert; linux-kernel; netdev@vger.kernel.org; Alan Cox; Simon Mackinlay Subject: Re: Router stops routing after changing MAC Address On Tue, 14 Mar 2006, Bart Samwel wrote: > linux-os (Dick Johnson) wrote: >> On Mon, 13 Mar 2006, Greg Scott wrote: >> Bzzzzst... Not! There are not any MAC addresses associated with any >> of the intercity links, usually not even in WANs! MAC is for >> Ethernet! Once you go to fiber, ATM, T-N, etc., there are no MAC addresses. > > Bzzzzt. According to WikiPedia: > > http://en.wikipedia.org/wiki/MAC_address > > MAC addresses are used for: > > - Token ring > - 802.11 wireless networks > - Bluetooth > - FDDI > - ATM (switched virtual connections only, as part of an NSAP address) > - SCSI and Fibre Channel (as part of a World Wide Name) > > FDDI = fiber, ATM = ATM. > > --Bart > A name is NOT. I can call my mail route number RFD#2 a MAC address. Also token-ring is a form of Ethernet as are all known wireless networks unless they use light. Even cable modems use Ethernet, with FDM on the cable side and baseband on the customer side. Calling SCSI MAC is absurd. All of the above, except the ethernets are forms of point-to-point communications links. IP (over/under or through) these links uses a source and destination IP and any hardware addressing scheme is incidental. Cheers, Dick Johnson Penguin : Linux version 2.6.15.4 on an i686 machine (5589.54 BogoMips). Warning : 98.36% of all statistics are fiction, book release in April. _  **************************************************************** The information transmitted in this message is confidential and may be privileged. Any review, retransmission, dissemination, or other use of this information by persons or entities other than the intended recipient is prohibited. If you are not the intended recipient, please notify Analogic Corporation immediately - by replying to this message or by sending an email to DeliveryErrors@analogic.com - and destroy all copies of this information, including any attachments, without reading or disclosing them. Thank you. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/