Date: Wed, 26 Jul 2006 19:07:13 +0300 From: Chris Dionissopoulos <dionch@freemail.gr> To: Luigi Rizzo <rizzo@icir.org> Cc: net@freebsd.org Subject: Re: multiple DSL modems and pppoe sessions on the same ethernet ? Message-ID: <563361368.20060726190713@freemail.gr> In-Reply-To: <20060726071232.A96367@xorpc.icir.org> References: <20060726071232.A96367@xorpc.icir.org>
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Hello Luigi,
Wednesday, July 26, 2006, 5:12:32 PM, you wrote:
> hi,
> i am trying to run, on a single FreeBSD box, multiple (3 in my case)
> pppoe instances talking to as many DSL modems on the same ethernet cable
>
> ------+--------------+--------------+--------------+-----
> | | | |
> +-[modem1] +-[modem2] +-[modem3] +-[FreeBSD/ppp]
> DSL#1 DSL#2 DSL#3
> Ideally, in /etc/ppp/ppp.conf i can write something like
>
> modem1:
> set device PPPoE:rl0:dsl1
> ...
>
> modem2:
> set device PPPoE:rl0:dsl2
> ...
>
> modem3:
> set device PPPoE:rl0:dsl3
> ...
> Any better ideas ?
>
> cheers
> luigi
if your switch supports vlan and 802.1q encapsulation, you would create
3 different vlans (100,200,300) with one port each and plug each
modem, then, a trunk port with 3 vlans encapsulated (AKA tagged)
and plug rl0 interface.
then create vlan100,vlan200,vlan300 in physical rl0.
and do the same ppp config:
modem1:
set device PPPoE:vlan100:dsl1
...
modem2:
set device PPPoE:vlan200:dsl2
...
modem3:
set device PPPoE:vlan300:dsl3
...
another approach is to use 3 ng_ether interfaces with custom mac
addresses defined and linked to the same ng_bridge node with physical:
rl0:upper-------| |-----upper:ngeth0
rl0:lower----ng_bridge-----lower:ngeth0
| | | |-----lower:ngeth1
| | |--------upper:ngeth1
| |----------lower:ngeth0
|------------upper:ngeth1
and use (only) ngeth0,ngeth1,ngeth2 as pppoe devices in ppp.conf.
All untested and just in theory only.
Let us know your experiences.
--
Best regards,
Chris mailto:dionch@freemail.gr
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