Re: multiple DSL modems and pppoe sessions on the same ethernet ?

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@xxxxxxxxxxx


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