As sth...@nethelp.no wrote ...
Things like DECnet set the MAC address. Don't ask me why though.
Because there is a one to one correspondence between the DECnet (Phase
IV) address and the MAC address. Ie. if you specify the DECnet address,
you have also implicitly specified the MAC address.
My experience is that most modern (and many older) PC NIC's are
able to change their MAC address. The question really is, how
should I do this from within FreeBSD.
Is there a standard entry into the drivers to do this?
If you are wondering why I want to do this, I am looking at hot
standby
On Sat, May 15, 1999 at 12:12:29PM -0700, Justin C. Walker wrote:
It seems there's a need, and the possibility. Would somebody like to
suggest a syntax?
The precedent would be the socket ioctls SIOCGIFHWADDR and
SIOCSIFHWADDR. The Linux emulator suppors the get-only version
overloaded for this, no? The driver could fail the request if it
didn't support it; or if it has run out of slots for aliases. There
should also be (I think) a way to tell the driver to go to
promiscuous mode to emulate this (an I really want this request?),
but I'm not sure it
On Sat, May 15, 1999 at 12:26:37AM -0700, Steve Rubin wrote:
This is not how Etherchannel works. Anyone from cisco here care to explain
better than I possibly could?
On Fri, May 14, 1999 at 08:28:55PM -0700, John Milford wrote:
You have to have the capibility on the switch, and
On Sat, May 15, 1999 at 12:26:37AM -0700, Steve Rubin wrote:
This is not how Etherchannel works. Anyone from cisco here care to explain
better than I possibly could?
On Fri, May 14, 1999 at 08:28:55PM -0700, John Milford wrote:
You have to have the capibility on the switch, and
Yes Etherchannel uses some other mechanism to balance the load.
Its acually worse :)
Cisco Etherchannel requires the device attached to speak a special protocol
to keep things working. You can not just take any system, put 2 NIC's in it
plug it into a cisco switch, and expect it to work. It
From: adr...@freebsd.org
Date: 1999-05-16 04:59:51 -0700
To: Bernd Walter ti...@cicely.de
Subject: Re: ifconfig: changing mac address
Cc: freebsd-hackers@FreeBSD.ORG
In-reply-to: Your message of Sun, 16 May 1999 11:48:42
+0200.19990516114842.a48...@cicely8.cicely.de
Delivered-to: freebsd
It seems there's a need, and the possibility. Would somebody like to
suggest a syntax?
The precedent would be the socket ioctls SIOCGIFHWADDR and
SIOCSIFHWADDR. The Linux emulator suppors the get-only version
already.
It's already been mentioned that some adapters
This is not how Etherchannel works. Anyone from cisco here care to explain
better than I possibly could?
On Fri, May 14, 1999 at 08:28:55PM -0700, John Milford wrote:
You have to have the capibility on the switch, and enable it
first. It is called EtherChannel by Cisco, and it is 2 or
On Sat, 15 May 1999, Greg Lehey wrote:
It seems there's a need, and the possibility. Would somebody like to
suggest a syntax?
Keep in mind that a number of cards support multiple MAC addresses.
Simply using GET/SET limits the potential uses.
In general all cards will have a primary MAC
On Fri, 14 May 1999, Dan Nelson wrote:
And the next step would be to make the kernel realize that two cards
ifconfig'd with the same MAC address are meant to be bonded together
as one route (lots of switches support this). I have some machines
that I'd love to be able to get 20MB/sec
On Sat, 15 May 1999, Greg Lehey wrote:
On Friday, 14 May 1999 at 21:15:33 -0500, Dan Nelson wrote:
In the last episode (May 14), David Scheidt said:
On Sat, 15 May 1999, Greg Lehey wrote:
:It seems there's a need, and the possibility. Would somebody like
:to suggest a syntax?
As Daniel Eischen wrote ...
Is it possible to change the mac address of an ethernet card using
ifconfig?
Not in any 'standard' card, no. Some cards (in SUN workstations) allow
you to swap the EEPROM with the mac address, and I'll bet somewhere
someone has designed a card with a
On Sat, May 15, 1999 at 03:42:35AM -0400, Matthew N. Dodd wrote:
You want a sort of 'virtual' interface that allows the attachment of other
real (or maybe other 'virtual' interfaces) beneath it. This interface
implements a number of policies regarding how it routes packets addressed
to it.
Things like DECnet set the MAC address. Don't ask me why though.
Because there is a one to one correspondence between the DECnet (Phase
IV) address and the MAC address. Ie. if you specify the DECnet address,
you have also implicitly specified the MAC address.
Steinar Haug, Nethelp consulting,
It seems there's a need, and the possibility. Would somebody like to
suggest a syntax?
The precedent would be the socket ioctls SIOCGIFHWADDR and
SIOCSIFHWADDR. The Linux emulator suppors the get-only version
already.
--
\\ Sometimes you're ahead, \\ Mike Smith
\\ sometimes
From: Greg Lehey g...@lemis.com
Date: 1999-05-14 19:21:11 -0700
To: Dan Nelson dnel...@emsphone.com
Subject: Re: ifconfig: changing mac address
Cc: David Scheidt dsche...@enteract.com,Mark J. Taylor
mtay...@cybernet.com, Daniel Eischen
eisc...@vigrid.com,freebsd-hackers@FreeBSD.ORG
From: Mike Smith m...@smith.net.au
Date: 1999-05-15 09:40:39 -0700
To: Greg Lehey g...@lemis.com
Subject: Re: ifconfig: changing mac address
Cc: Mark J. Taylor mtay...@cybernet.com,Daniel Eischen
eisc...@vigrid.com, freebsd-hackers@FreeBSD.ORG
In-reply-to: Your message of Sat, 15 May 1999
Hi guys,
Does anyone know...
Is it possible to change the mac address of an ethernet card using
ifconfig? Does this depend upon the ioctls supported by the
specific driver?
Thanks.
Steve
To Unsubscribe: send mail to majord...@freebsd.org
with unsubscribe freebsd-hackers in the body of the
Is it possible to change the mac address of an ethernet card using
ifconfig?
Not in any 'standard' card, no. Some cards (in SUN workstations) allow
you to swap the EEPROM with the mac address, and I'll bet somewhere
someone has designed a card with a programmable mac address, but
normally
Is it possible to change the mac address of an ethernet card using
ifconfig?
Not in any 'standard' card, no. Some cards (in SUN workstations) allow
you to swap the EEPROM with the mac address, and I'll bet somewhere
someone has designed a card with a programmable mac address, but
Some day I will most likely need to deal with this for the
Token-ring drivers. In token-ring having a UAA and LAA
(Universally/Locally Administered Address) is very common
especially in high-availibility situations.
Larry Lile
l...@stdio.com
On Fri, 14 May 1999, Luigi Rizzo wrote:
Is it
Not in any 'standard' card, no. Some cards (in SUN workstations) allow
you to swap the EEPROM with the mac address, and I'll bet somewhere
someone has designed a card with a programmable mac address, but
normally it's not settable.
while ifconfig might miss this functionality, i
Is it possible to change the mac address of an ethernet card using
ifconfig?
Not in any 'standard' card, no. Some cards (in SUN workstations) allow
you to swap the EEPROM with the mac address, and I'll bet somewhere
someone has designed a card with a programmable mac address, but
One of the purposes of changing the MAC address is for server
redundancy.
Suppose that one of your important servers went down. Wouldn't it
be nice for the alternative server (a mirror) to get the important
server's MAC address (and IP address(es), and AppleTalk address, etc.),
so the client's
One of the purposes of changing the MAC address is for server
redundancy.
Suppose that one of your important servers went down. Wouldn't it
be nice for the alternative server (a mirror) to get the important
server's MAC address (and IP address(es), and AppleTalk address, etc.),
so the
[Apologies if this is duplicated, sort of; I inadvertently lost
power as I was sending a reply to this, and I don't have a record
that it was sent].
From: Nate Williams n...@mt.sri.com
Date: 1999-05-14 10:11:52 -0700
To: steve.gai...@db.com
Subject: Re: ifconfig: changing mac address
Cc
On Friday, 14 May 1999 at 15:43:15 -0400, Mark J. Taylor wrote:
On 14-May-99 Daniel Eischen wrote:
Is it possible to change the mac address of an ethernet card using
ifconfig?
Not in any 'standard' card, no. Some cards (in SUN workstations) allow
you to swap the EEPROM with the mac address,
On Sat, 15 May 1999, Greg Lehey wrote:
:
:It seems there's a need, and the possibility. Would somebody like to
:suggest a syntax?
:
ifconfig interface ether ab:cd:ef:fe:dc:ab [options]
makes sense to me.
David Scheidt
To Unsubscribe: send mail to majord...@freebsd.org
with unsubscribe
In the last episode (May 14), David Scheidt said:
On Sat, 15 May 1999, Greg Lehey wrote:
:It seems there's a need, and the possibility. Would somebody like
:to suggest a syntax?
ifconfig interface ether ab:cd:ef:fe:dc:ab [options]
makes sense to me.
And the next step would be to make
On Friday, 14 May 1999 at 21:15:33 -0500, Dan Nelson wrote:
In the last episode (May 14), David Scheidt said:
On Sat, 15 May 1999, Greg Lehey wrote:
:It seems there's a need, and the possibility. Would somebody like
:to suggest a syntax?
ifconfig interface ether ab:cd:ef:fe:dc:ab [options]
On Sat, 15 May 1999, Greg Lehey wrote:
:On Friday, 14 May 1999 at 21:15:33 -0500, Dan Nelson wrote:
:
: And the next step would be to make the kernel realize that two cards
: ifconfig'd with the same MAC address are meant to be bonded together as
: one route (lots of switches support this). I
In the last episode (May 15), Greg Lehey said:
And the next step would be to make the kernel realize that two cards
ifconfig'd with the same MAC address are meant to be bonded together as
one route (lots of switches support this). I have some machines that
I'd love to be able to get
On Friday, 14 May 1999 at 21:41:23 -0500, David Scheidt wrote:
On Sat, 15 May 1999, Greg Lehey wrote:
:On Friday, 14 May 1999 at 21:15:33 -0500, Dan Nelson wrote:
:
: And the next step would be to make the kernel realize that two cards
: ifconfig'd with the same MAC address are meant to be
On Sat, 15 May 1999, Greg Lehey wrote:
:
:If you have two different nets, why do you need the same Ethernet
:address?
:
Transparent redundancy. With them both up on the same MAC address, if one
fails, you have no loss of connection, though you may drop some packets, of
course. Most of the
On Friday, 14 May 1999 at 21:54:02 -0500, David Scheidt wrote:
On Sat, 15 May 1999, Greg Lehey wrote:
:
:If you have two different nets, why do you need the same Ethernet
:address?
:
Transparent redundancy. With them both up on the same MAC address, if one
fails, you have no loss of
On Sat, 15 May 1999, Greg Lehey wrote:
:OK, now maybe I'm missing something here. But an Ethernet address is
:used to identify a board. Arp binds it to an IP address. An IP
:address is bound to a network. So if you're on a different network,
:you get a different IP address. Why do you need
You need a switch to do this. If your clients are on the same ethernet as
your server, they can only talk to one MAC address. That means you only get
the bandwidth of one interface. If you have a switch that can bond ports
together, you can use both cards at the same time,
In the last episode (May 15), Greg Lehey said:
OK, now maybe I'm missing something here. But an Ethernet address is
used to identify a board. Arp binds it to an IP address. An IP
address is bound to a network. So if you're on a different network,
you get a different IP address. Why do you
You have to have the capibility on the switch, and enable it
first. It is called EtherChannel by Cisco, and it is 2 or 4 ports
that all have the same MAC addr plugged into the switch, and the
switch treats them as one interface.
--John
Steve Rubin s...@tch.org
Greg Lehey wrote:
On Friday, 14 May 1999 at 15:43:15 -0400, Mark J. Taylor wrote:
One of the purposes of changing the MAC address is for server
redundancy.
Yes, and in fact Tandem^H^H^H^H^H^HCompaq use this for their NonStop
Ethernet. The machine has two ethernet boards. If one goes
Greg Lehey wrote:
OK, now maybe I'm missing something here. But an Ethernet address is
used to identify a board. Arp binds it to an IP address. An IP
address is bound to a network. So if you're on a different network,
you get a different IP address. Why do you need the same Ethernet
David Scheidt wrote:
On Sat, 15 May 1999, Greg Lehey wrote:
:OK, now maybe I'm missing something here. But an Ethernet address is
:used to identify a board. Arp binds it to an IP address. An IP
:address is bound to a network. So if you're on a different network,
:you get a different
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