From owner-freebsd-net Fri Feb 26 12:16:29 1999 Delivered-To: freebsd-net@freebsd.org Received: from ausmail1.austin.ibm.com (ausmail1.austin.ibm.com [192.35.232.12]) by hub.freebsd.org (Postfix) with ESMTP id 6C09E15171 for ; Fri, 26 Feb 1999 12:16:23 -0800 (PST) (envelope-from venkats@austin.ibm.com) Received: from netmail1.austin.ibm.com (netmail1.austin.ibm.com [9.53.250.96]) by ausmail1.austin.ibm.com (8.9.1/8.8.5) with ESMTP id OAA09072; Fri, 26 Feb 1999 14:10:26 -0600 Received: from ambika.austin.ibm.com (ambika.austin.ibm.com [9.53.150.77]) by netmail1.austin.ibm.com (8.8.5/8.8.5) with ESMTP id OAA43610; Fri, 26 Feb 1999 14:15:59 -0600 Received: from austin.ibm.com (localhost.austin.ibm.com [127.0.0.1]) by ambika.austin.ibm.com (AIX4.3/UCB 8.8.8/8.7-client1.01) with ESMTP id OAA40054; Fri, 26 Feb 1999 14:15:58 -0600 Message-ID: <36D700FD.CE31C946@austin.ibm.com> Date: Fri, 26 Feb 1999 14:15:57 -0600 From: venkat venkatsubra Organization: IBM X-Mailer: Mozilla 4.06 [en] (X11; I; AIX 4.3) MIME-Version: 1.0 To: Luigi Rizzo Cc: Petri Helenius , archie@whistle.com, freebsd-net@FreeBSD.ORG Subject: Re: etherchannel support References: <199902261800.TAA26142@labinfo.iet.unipi.it> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Using the src/dst MAC addresses doesn't work well for destinations across a router because the destination MAC address is always going to be that of the router. I think they have an option of using the src/dst IP addresses for IP traffic. I am not sure about which Cisco switches support this.. Venkat Luigi Rizzo wrote: > > > > > > > Does freebsd have support for Cisco's etherchannel ? > > > ... > > > > > hmm... i see it easy for incoming path, but what about the outgoing ? > > > > > How do you chose which interface to use for output, what about load > > > > > balancing, etc ? > > > > Well, what does Cisco do? > > > > > > hey, i asked first! > > > > > > cheers > > > luigi > > > > > They XOR the low byte of the source and destination mac addresses and use > > 1-3 low order bits to determine the link to transmit on. (etherchannel > > supports > > at least up to 8 links between two devices) > > hmm... so if all your cards use the same mac address (which could > be useful to simplify life when doing ARP-related stuff etc) you > effectively only use one link ? > > luigi > -----------------------------------+------------------------------------- > Luigi RIZZO . > EMAIL: luigi@iet.unipi.it . Dip. di Ing. dell'Informazione > HTTP://www.iet.unipi.it/~luigi/ . Universita` di Pisa > TEL/FAX: +39-050-568.533/522 . via Diotisalvi 2, 56126 PISA (Italy) > -----------------------------------+------------------------------------- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message