Dave Bott(deleted)
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How to behave like a switch ?
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Dave Bott(deleted)
02/28/2011 8:55 PM
post83605
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How to behave like a switch ?
6.5.0 X86
A customer wonders how to use their 3-NIC X86 board to forward packets like a switch does i.e. configure all 3 NICs to
be on the same logical subnet, yet be physically connected to different cables/other NICs on each port, allowing those
external devices to communicate with each other and QNX via the QNX box that will forward packets as required between
the ports.
Normally, we do not allow this, and I understand that. Is there a mode we can se tthat will achieve this, or do we
strictly require each NIC to be on a different subnet ?
Thanks !
Dave
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Sean Boudreau(deleted)
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Re: How to behave like a switch ?
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Sean Boudreau(deleted)
02/28/2011 9:14 PM
post83606
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Re: How to behave like a switch ?
Look at 'ifconfig bridge0 create' and the 'brconfig' utility. This is all at layer 2.
Regards,
-seanb
----- Original Message -----
From: Dave Bott [mailto:community-noreply@qnx.com]
Sent: Monday, February 28, 2011 08:55 PM
To: technology-networking <post83605@community.qnx.com>
Subject: How to behave like a switch ?
6.5.0 X86
A customer wonders how to use their 3-NIC X86 board to forward packets like a switch does i.e. configure all 3 NICs to
be on the same logical subnet, yet be physically connected to different cables/other NICs on each port, allowing those
external devices to communicate with each other and QNX via the QNX box that will forward packets as required between
the ports.
Normally, we do not allow this, and I understand that. Is there a mode we can se tthat will achieve this, or do we
strictly require each NIC to be on a different subnet ?
Thanks !
Dave
_______________________________________________
Technology
http://community.qnx.com/sf/go/post83605
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Dave Bott(deleted)
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RE: How to behave like a switch ?
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Dave Bott(deleted)
02/28/2011 9:39 PM
post83608
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RE: How to behave like a switch ?
Thanks Guys.
Small point :
ifconfig bridge0 create
does not appear to be documented....
'create' is mentioned, but nothing specific.
brconfig is, which is lovely !
So, is
ifconfig bridge0 create
all that is required to be done, prior to using brconfig to set the real magic up ?
Thanks !
Dave
________________________________
From: Sean Boudreau [mailto:community-noreply@qnx.com]
Sent: Mon 2/28/2011 6:14 PM
To: technology-networking
Subject: Re: How to behave like a switch ?
Look at 'ifconfig bridge0 create' and the 'brconfig' utility. This is all at layer 2.
Regards,
-seanb
----- Original Message -----
From: Dave Bott [mailto:community-noreply@qnx.com]
Sent: Monday, February 28, 2011 08:55 PM
To: technology-networking <post83605@community.qnx.com>
Subject: How to behave like a switch ?
6.5.0 X86
A customer wonders how to use their 3-NIC X86 board to forward packets like a switch does i.e. configure all 3 NICs to
be on the same logical subnet, yet be physically connected to different cables/other NICs on each port, allowing those
external devices to communicate with each other and QNX via the QNX box that will forward packets as required between
the ports.
Normally, we do not allow this, and I understand that. Is there a mode we can se tthat will achieve this, or do we
strictly require each NIC to be on a different subnet ?
Thanks !
Dave
_______________________________________________
Technology
http://community.qnx.com/sf/go/post83605
_______________________________________________
Technology
http://community.qnx.com/sf/go/post83606
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Sean Boudreau(deleted)
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RE: How to behave like a switch ?
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Sean Boudreau(deleted)
03/01/2011 3:06 AM
post83610
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RE: How to behave like a switch ?
'ifconfig -C' is mentioned.
Regards,
-seanb
-----Original Message-----
From: Dave Bott [mailto:community-noreply@qnx.com]
Sent: Mon 2/28/2011 9:39 PM
To: technology-networking
Subject: RE: How to behave like a switch ?
Thanks Guys.
Small point :
ifconfig bridge0 create
does not appear to be documented....
'create' is mentioned, but nothing specific.
brconfig is, which is lovely !
So, is
ifconfig bridge0 create
all that is required to be done, prior to using brconfig to set the real magic up ?
Thanks !
Dave
________________________________
From: Sean Boudreau [mailto:community-noreply@qnx.com]
Sent: Mon 2/28/2011 6:14 PM
To: technology-networking
Subject: Re: How to behave like a switch ?
Look at 'ifconfig bridge0 create' and the 'brconfig' utility. This is all at layer 2.
Regards,
-seanb
----- Original Message -----
From: Dave Bott [mailto:community-noreply@qnx.com]
Sent: Monday, February 28, 2011 08:55 PM
To: technology-networking <post83605@community.qnx.com>
Subject: How to behave like a switch ?
6.5.0 X86
A customer wonders how to use their 3-NIC X86 board to forward packets like a switch does i.e. configure all 3 NICs to
be on the same logical subnet, yet be physically connected to different cables/other NICs on each port, allowing those
external devices to communicate with each other and QNX via the QNX box that will forward packets as required between
the ports.
Normally, we do not allow this, and I understand that. Is there a mode we can se tthat will achieve this, or do we
strictly require each NIC to be on a different subnet ?
Thanks !
Dave
_______________________________________________
Technology
http://community.qnx.com/sf/go/post83605
_______________________________________________
Technology
http://community.qnx.com/sf/go/post83606
_______________________________________________
Technology
http://community.qnx.com/sf/go/post83608
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Dave Bott(deleted)
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RE: How to behave like a switch ?
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Dave Bott(deleted)
03/01/2011 10:46 AM
post83625
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RE: How to behave like a switch ?
Hi Sean,
You're right, '-C' is mentioned, in the depths of reams of docs, but how would a new person know to look for it ? If
there was a section marked 'how to set up a bridge', that would be a lot more obvious.
I'll grant you it could help to provide a clue, but we're supposed to be helping prospects and customers to get things
done easily, not make them work really hard to do stuff we can document.
So, I run 'ifconfig -C'
and it lists 'bridge' amongst other things. How does this help me ?
How do I know what to do with 'bridge' ? How do I know to use brconfig (it is not mentioned in ifconfig) ?
The customer tells me he's tried to use brconfig, but is not managing to get it working.
Is there a (tested) example that a customer can use as a starting point, even if it is a non-QNX document ? I'll file a
PR requesting improved docs, assuming that this does all work at some point.
I'm not trying to be awkward, I'm asking that the documentation cover this, so that a customer can help themselves and
be happier, while also relieving us of the support burden. Happier customer and less work for us sounds like the way to
go...
Any suggestions for the exact steps that this customer should take would be most welcome.
Regards
Dave
________________________________
From: Sean Boudreau [mailto:community-noreply@qnx.com]
Sent: Tue 3/1/2011 12:06 AM
To: technology-networking
Subject: RE: How to behave like a switch ?
'ifconfig -C' is mentioned.
Regards,
-seanb
-----Original Message-----
From: Dave Bott [mailto:community-noreply@qnx.com]
Sent: Mon 2/28/2011 9:39 PM
To: technology-networking
Subject: RE: How to behave like a switch ?
Thanks Guys.
Small point :
ifconfig bridge0 create
does not appear to be documented....
'create' is mentioned, but nothing specific.
brconfig is, which is lovely !
So, is
ifconfig bridge0 create
all that is required to be done, prior to using brconfig to set the real magic up ?
Thanks !
Dave
________________________________
From: Sean Boudreau [mailto:community-noreply@qnx.com]
Sent: Mon 2/28/2011 6:14 PM
To: technology-networking
Subject: Re: How to behave like a switch ?
Look at 'ifconfig bridge0 create' and the 'brconfig' utility. This is all at layer 2.
Regards,
-seanb
----- Original Message -----
From: Dave Bott [mailto:community-noreply@qnx.com]
Sent: Monday, February 28, 2011 08:55 PM
To: technology-networking <post83605@community.qnx.com>
Subject: How to behave like a switch ?
6.5.0 X86
A customer wonders how to use their 3-NIC X86 board to forward packets like a switch does i.e. configure all 3 NICs to
be on the same logical subnet, yet be physically connected to different cables/other NICs on each port, allowing those
external devices to communicate with each other and QNX via the QNX box that will forward packets as required between
the ports.
Normally, we do not allow this, and I understand that. Is there a mode we can se tthat will achieve this, or do we
strictly require each NIC to be on a different subnet ?
Thanks !
Dave
_______________________________________________
Technology
http://community.qnx.com/sf/go/post83605
_______________________________________________
Technology
http://community.qnx.com/sf/go/post83606
_______________________________________________
Technology
http://community.qnx.com/sf/go/post83608
_______________________________________________
Technology
http://community.qnx.com/sf/go/post83610
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