Date: Fri, 26 Feb 1999 14:15:57 -0600 From: venkat venkatsubra <venkats@austin.ibm.com> To: Luigi Rizzo <luigi@labinfo.iet.unipi.it> Cc: Petri Helenius <pete@sms.fi>, archie@whistle.com, freebsd-net@FreeBSD.ORG Subject: Re: etherchannel support Message-ID: <36D700FD.CE31C946@austin.ibm.com> References: <199902261800.TAA26142@labinfo.iet.unipi.it>
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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
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