[Olsr-users] OLSR Across Multiple Channel Ad-hoc Networks?

Tue Feb 11 21:26:15 CET 2014

Thanks for your experiences Kim, I was planning on unique SSIDs anyway.

Thanks Ben, having each radio on a different subnet should be no problem.

Thanks all,
Duncan

On 11 February 2014 15:55, Ben West <(spam-protected)> wrote:
> I can confirm that the ath5k and ath9k (and presumably ath10k) drivers do
> not support ahdemo, by design.  Ahdemo was intentionally left out, even
> though it still works with madwifi, since it was not considered
> 802.11-compliant.
>
>
> On Tue, Feb 11, 2014 at 9:38 AM, Eric Malkowski <(spam-protected)> wrote:
>>
>> We avoid the problem Ben describes (I'm quite sure) with multiple ad hoc
>> radios with olsr all on same ssid by using madwifi's ahdemo mode which will
>> never have cell splits like ad hoc proper can.  Ahdemo just sends data and
>> no beacons etc. and olsr is great to build a mesh through this.  We just do
>> 2 radios on different channels with same ssid and same subnet and it works
>> very well for us.  Feels like one big distributed subnet of host ip addrs
>> and we put hnas off of some of these (one ap and one ahdemo setup) that
>> works well. If the latest ath5k or ath9k etc driver did an equivalent for
>> ahdemo we would like to know so we could use it in our setup.  Good luck.
>>
>> -Eric
>>
>>
>> Sent from my Verizon Wireless 4G LTE DROID
>>
>>
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>> Today's Topics:
>>
>>    1. OLSR Across Multiple Channel Ad-hoc Networks? (Duncan Eastoe)
>>    2. Re: OLSR Across Multiple Channel Ad-hoc Networks? (Henning Rogge)
>>    3. Re: OLSR Across Multiple Channel Ad-hoc Networks? (Duncan Eastoe)
>>    4. Re: OLSR Across Multiple Channel Ad-hoc Networks? (Ben West)
>>    5. Re: OLSR Across Multiple Channel Ad-hoc Networks? (Duncan Eastoe)
>>    6. Re: OLSR Across Multiple Channel Ad-hoc Networks? (Kim Hawtin)
>>    7. Re: OLSR Across Multiple Channel Ad-hoc Networks? (Ben West)
>>
>>
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Mon, 10 Feb 2014 20:50:29 +0000
>> From: Duncan Eastoe <(spam-protected)>
>> To: (spam-protected)
>> Subject: [Olsr-users] OLSR Across Multiple Channel Ad-hoc Networks?
>> Message-ID:
>> <(spam-protected)>
>> Content-Type: text/plain; charset=ISO-8859-1
>>
>>
>> Hello,
>>
>> For my undergraduate dissertation I am running tests on a mesh
>> network. I have a network consisting of 6 nodes running OpenWrt. I
>> wish for OLSR to manage the routing between them.
>>
>> All of the nodes are in range of each other, however I need to emulate
>> an environment where the nodes communicate via directed antennas and
>> where they are not in a full mesh. To do this I'm planning to use
>> several ad-hoc networks running on different channels.
>>
>> I'm not sure whether OLSR is able to handle the routing across
>> multiple ad-hoc networks, each of which is running on a different
>> channel.
>>
>> Please could someone clarify this and/or point me to any resources for
>> configuration in such an environment?
>>
>> Thank you,
>> Duncan
>>
>>
>>
>> ------------------------------
>>
>> Message: 2
>> Date: Mon, 10 Feb 2014 22:02:18 +0100
>> From: Henning Rogge <(spam-protected)>
>> To: Duncan Eastoe <(spam-protected)>
>> Cc: olsr ysers mailing list <(spam-protected)>
>> Subject: Re: [Olsr-users] OLSR Across Multiple Channel Ad-hoc
>> Networks?
>> Message-ID:
>> <(spam-protected)>
>> Content-Type: text/plain; charset=ISO-8859-1
>>
>>
>> OLSRd easily works with multiple interfaces, being ethernet,
>> wifi-networks or any other broadcast capable interface.
>>
>> Using it in a multi-channel adhoc network is also common procedure in
>> lots of Community Networks.
>>
>> Henning Rogge
>>
>> On Mon, Feb 10, 2014 at 9:50 PM, Duncan Eastoe <(spam-protected)>
>> wrote:
>> > Hello,
>> >
>> > For my undergraduate dissertation I am running tests on a mesh
>> > network. I have a network consisting of 6 nodes running OpenWrt. I
>> > wish for OLSR to manage the routing between them.
>> >
>> > All of the nodes are in range of each other, however I need to emulate
>> > an environment where the nodes communicate via directed antennas and
>> > where they are not in a full mesh. To do this I'm planning to use
>> > several ad-hoc networks running on different channels.
>> >
>> > I'm not sure whether OLSR is able to handle the routing across
>> > multiple ad-hoc networks, each of which is running on a different
>> > channel.
>> >
>> > Please could someone clarify this and/or point me to any resources for
>> > configuration in such an environment?
>> >
>> > Thank you,
>> > Duncan
>> >
>> > --
>> > Olsr-users mailing list
>> > (spam-protected)
>> > https://lists.olsr.org/mailman/listinfo/olsr-users
>>
>>
>>
>> ------------------------------
>>
>> Message: 3
>> Date: Mon, 10 Feb 2014 21:12:35 +0000
>> From: Duncan Eastoe <(spam-protected)>
>> To: Henning Rogge <(spam-protected)>
>> Cc: olsr ysers mailing list <(spam-protected)>
>> Subject: Re: [Olsr-users] OLSR Across Multiple Channel Ad-hoc
>> Networks?
>> Message-ID:
>> <(spam-protected)>
>> Content-Type: text/plain; charset=ISO-8859-1
>>
>>
>> Thank you for clarifying Henning.
>>
>> Duncan
>>
>>
>> On 10 February 2014 21:02, Henning Rogge <(spam-protected)> wrote:
>> > OLSRd easily works with multiple interfaces, being ethernet,
>> > wifi-networks or any other broadcast capable interface.
>> >
>> > Using it in a multi-channel adhoc network is also common procedure in
>> > lots of Community Networks.
>> >
>> > Henning Rogge
>> >
>> > On Mon, Feb 10, 2014 at 9:50 PM, Duncan Eastoe <(spam-protected)>
>> > wrote:
>> >> Hello,
>> >>
>> >> For my undergraduate dissertation I am running tests on a mesh
>> >> network. I have a network consisting of 6 nodes running OpenWrt. I
>> >> wish for OLSR to manage the routing between them.
>> >>
>> >> All of the nodes are in range of each other, however I need to emulate
>> >> an environment where the nodes communicate via directed antennas and
>> >> where they are not in a full mesh. To do this I'm planning to use
>> >> several ad-hoc networks running on different channels.
>> >>
>> >> I'm not sure whether OLSR is able to handle the routing across
>> >> multiple ad-hoc networks, each of which is running on a different
>> >> channel.
>> >>
>> >> Please could someone clarify this and/or point me to any resources for
>> >> configuration in such an environment?
>> >>
>> >> Thank you,
>> >> Duncan
>> >>
>> >> --
>> >> Olsr-users mailing list
>> >> (spam-protected)
>> >> https://lists.olsr.org/mailman/listinfo/olsr-users
>>
>>
>>
>> --
>> PGP public key -
>> http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xA3B79B579009DCA2
>>
>>
>>
>> ------------------------------
>>
>> Message: 4
>> Date: Mon, 10 Feb 2014 15:16:51 -0600
>> From: Ben West <(spam-protected)>
>> To: Henning Rogge <(spam-protected)>
>> Cc: olsr ysers mailing list <(spam-protected)>
>> Subject: Re: [Olsr-users] OLSR Across Multiple Channel Ad-hoc
>> Networks?
>> Message-ID:
>> <CADSh-SPzUgXc56Heeu_hY0bOG-ksVAbRhfs22=(spam-protected)>
>> Content-Type: text/plain; charset="iso-8859-1"
>>
>>
>> A possibly non-trivial, operational detail that may arise from testing
>> OLSRd across multiple interfaces, i.e. wired + wireless interface(s), is
>> that the popular OpenWRT firmware used by most community networks does not
>> support directly bridging adhoc wireless interface with wired interfaces.
>> The recommended approach (I think) is to use the *trelay* package in
>>
>> OpenWRT to have the kernel basically forward packets b/w any such
>> interfaces that don't otherwise support conventional bridging.  I believe
>> by creating a named VLAN for the purpose.
>>
>>
>> On Mon, Feb 10, 2014 at 3:02 PM, Henning Rogge <(spam-protected)> wrote:
>>
>> > OLSRd easily works with multiple interfaces, being ethernet,
>> > wifi-networks or any other broadcast capable interface.
>> >
>> > Using it in a multi-channel adhoc network is also common procedure in
>> > lots of Community Networks.
>> >
>> > Henning Rogge
>> >
>> > On Mon, Feb 10, 2014 at 9:50 PM, Duncan Eastoe <(spam-protected)>
>> > wrote:
>> > > Hello,
>> > >
>> > > For my undergraduate dissertation I am running tests on a mesh
>> > > network. I have a network consisting of 6 nodes running OpenWrt. I
>> > > wish for OLSR to manage the routing between them.
>> > >
>> > > All of the nodes are in range of each other, however I need to emulate
>> > > an environment where the nodes communicate via directed antennas and
>> > > where they are not in a full mesh. To do this I'm planning to use
>> > > several ad-hoc networks running on different channels.
>> > >
>> > > I'm not sure whether OLSR is able to handle the routing across
>> > > multiple ad-hoc networks, each of which is running on a different
>> > > channel.
>> > >
>> > > Please could someone clarify this and/or point me to any resources for
>> > > configuration in such an environment?
>> > >
>> > > Thank you,
>> > > Duncan
>> > >
>> > > --
>> > > Olsr-users mailing list
>> > > (spam-protected)
>> > > https://lists.olsr.org/mailman/listinfo/olsr-users
>> >
>> > --
>> > Olsr-users mailing list
>> > (spam-protected)
>> > https://lists.olsr.org/mailman/listinfo/olsr-users
>> >
>>
>>
>>
>> --
>> Ben West
>> (spam-protected)
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>> ------------------------------
>>
>> Message: 5
>> Date: Mon, 10 Feb 2014 22:22:17 +0000
>> From: Duncan Eastoe <(spam-protected)>
>> To: (spam-protected)
>> Cc: olsr ysers mailing list <(spam-protected)>
>> Subject: Re: [Olsr-users] OLSR Across Multiple Channel Ad-hoc
>> Networks?
>> Message-ID:
>> <(spam-protected)>
>> Content-Type: text/plain; charset=ISO-8859-1
>>
>>
>> I'm only interested in multiple wireless interfaces per node so
>> shouldn't be a problem?
>>
>> Thanks,
>> Duncan
>>
>> On 10 February 2014 21:16, Ben West <(spam-protected)> wrote:
>> > A possibly non-trivial, operational detail that may arise from testing
>> > OLSRd
>> > across multiple interfaces, i.e. wired + wireless interface(s), is that
>> > the
>> > popular OpenWRT firmware used by most community networks does not
>> > support
>> > directly bridging adhoc wireless interface with wired interfaces.  The
>> > recommended approach (I think) is to use the trelay package in OpenWRT
>> > to
>> > have the kernel basically forward packets b/w any such interfaces that
>> > don't
>> > otherwise support conventional bridging.  I believe by creating a named
>> > VLAN
>> > for the purpose.
>> >
>> >
>> > On Mon, Feb 10, 2014 at 3:02 PM, Henning Rogge <(spam-protected)> wrote:
>> >>
>> >> OLSRd easily works with multiple interfaces, being ethernet,
>> >> wifi-networks or any other broadcast capable interface.
>> >>
>> >> Using it in a multi-channel adhoc network is also common procedure in
>> >> lots of Community Networks.
>> >>
>> >> Henning Rogge
>> >>
>> >> On Mon, Feb 10, 2014 at 9:50 PM, Duncan Eastoe <(spam-protected)>
>> >> wrote:
>> >> > Hello,
>> >> >
>> >> > For my undergraduate dissertation I am running tests on a mesh
>> >> > network. I have a network consisting of 6 nodes running OpenWrt. I
>> >> > wish for OLSR to manage the routing between them.
>> >> >
>> >> > All of the nodes are in range of each other, however I need to
>> >> > emulate
>> >> > an environment where the nodes communicate via directed antennas and
>> >> > where they are not in a full mesh. To do this I'm planning to use
>> >> > several ad-hoc networks running on different channels.
>> >> >
>> >> > I'm not sure whether OLSR is able to handle the routing across
>> >> > multiple ad-hoc networks, each of which is running on a different
>> >> > channel.
>> >> >
>> >> > Please could someone clarify this and/or point me to any resources
>> >> > for
>> >> > configuration in such an environment?
>> >> >
>> >> > Thank you,
>> >> > Duncan
>> >> >
>> >> > --
>> >> > Olsr-users mailing list
>> >> > (spam-protected)
>> >> > https://lists.olsr.org/mailman/listinfo/olsr-users
>> >>
>> >> --
>> >> Olsr-users mailing list
>> >> (spam-protected)
>> >> https://lists.olsr.org/mailman/listinfo/olsr-users
>> >
>> >
>> >
>> >
>> > --
>> > Ben West
>> > (spam-protected)
>>
>>
>>
>> --
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>>
>>
>> ------------------------------
>>
>> Message: 6
>> Date: Tue, 11 Feb 2014 11:13:44 +1030
>> From: Kim Hawtin <(spam-protected)>
>> To: (spam-protected)
>> Subject: Re: [Olsr-users] OLSR Across Multiple Channel Ad-hoc
>> Networks?
>> Message-ID: <(spam-protected)>
>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>>
>>
>> Hi Duncan,
>>
>> On 11/02/14 08:52, Duncan Eastoe wrote:
>> > I'm only interested in multiple wireless interfaces per node so
>> > shouldn't be a problem?
>>
>> I've done this in the past with multiple wifi interfaces with the same
>> ssids on different channels. I ran into problems where the chipset would
>> jump channels to be on the same ssid as an existing adhoc mesh.
>>
>> So initially I would suggest naming your channels with different ssids.
>>
>> Also would be interesting to see if this bug is in modern wifi chipsets.
>>
>> regards,
>>
>> Kim VK5FJ
>>
>>
>>
>> ------------------------------
>>
>> Message: 7
>> Date: Mon, 10 Feb 2014 23:29:18 -0600
>> From: Ben West <(spam-protected)>
>> To: (spam-protected)
>> Cc: olsr-users <(spam-protected)>
>> Subject: Re: [Olsr-users] OLSR Across Multiple Channel Ad-hoc
>> Networks?
>> Message-ID:
>> <CADSh-SOFPO43n3+r7VTOFQ5H9XE0DTiBf1dZmNCn8Bvk68=(spam-protected)>
>> Content-Type: text/plain; charset="iso-8859-1"
>>
>>
>> I believe OpenWRT's restriction on not letting adhoc wireless interfaces
>> join bridges would also mean multiple wireless adhoc interface could not
>> be
>> bridged together directly to share the same IP address, if that is
>> desired.  Traffic between such interfaces would have be routed explicitly
>> (i.e. each radio sits on its own IP subnet, OLSRd computes routes between
>> them), or you could create a VLAN and bridge the interfaces indirectly
>> with
>> trelay.
>> https://dev.openwrt.org/ticket/10108
>>
>> As for Duncan's experience with broadcasting the same SSID on multiple
>> channels, that may have conflicted with the roaming function implemented
>> in
>> whichever 802.11 chipsets were being used.   Clients seeing the same SSID
>> on different channels may try to roam freely between each AP, and the
>> behavior Duncan observed could have been those clients' roaming behavior
>> as
>> implemented for adhoc.
>>
>>
>>
>> On Mon, Feb 10, 2014 at 6:43 PM, Kim Hawtin <(spam-protected)> wrote:
>>
>> > Hi Duncan,
>> >
>> >
>> > On 11/02/14 08:52, Duncan Eastoe wrote:
>> >
>> >> I'm only interested in multiple wireless interfaces per node so
>> >> shouldn't be a problem?
>> >>
>> >
>> > I've done this in the past with multiple wifi interfaces with the same
>> > ssids on different channels. I ran into problems where the chipset would
>> > jump channels to be on the same ssid as an existing adhoc mesh.
>> >
>> > So initially I would suggest naming your channels with different ssids.
>> >
>> > Also would be interesting to see if this bug is in modern wifi chipsets.
>> >
>> > regards,
>> >
>> > Kim VK5FJ
>> >
>> >
>> > --
>> > Olsr-users mailing list
>> > (spam-protected)
>> > https://lists.olsr.org/mailman/listinfo/olsr-users
>> >
>>
>>
>>
>> --
>> Ben West
>> http://gowasabi.net
>> (spam-protected)
>> 314-246-9434
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