Date: Sat, 22 Aug 2009 11:07:31 +0200 From: Michelle Konzack <bsd4michelle@tamay-dogan.net> To: freebsd-isp@freebsd.org Subject: Re: PPPoE server (high traffic in WDM network) Message-ID: <20090822090731.GA2257@tamay-dogan.net> In-Reply-To: <175230.20142.qm@web56407.mail.re3.yahoo.com> References: <20090715184054.GD29667@tamay-dogan.net> <175230.20142.qm@web56407.mail.re3.yahoo.com>
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Hello Muhammad,
Am 2009-08-21 16:36:52, schrieb muhammad usman:
> Hi,
>
> I've little off topic suggestion regarding network design.
>
> The solution you are implementing will mean to make hundreds of users
> share the same broadcast domain. As all your FTTH and other DSLAMS
> would be working in bridge mode.
Right.
> This scenerio is not safe as if anyone of your clients will start his
> own pppoe server you will be in strange trouble, there can be other
> issues too.
I was thinking about this problem to, but AFAIK this does not work,
because the FTTH Modem is blocking such things from the customer.
> I guess your DSLAMs must have built in pppoe support and radius
> client, if its there then every port of dslams can be separate
> broadcast domain. This will cause you extra routing management
> (depending upon your scsnerio)
No, the "Iskratel SI3000 FTTH DSLAM" is only a transport system which
require external PPPoE service.
> In case your DSLAMS have no pppoe feature then i would suggest you to
> at least put every DSLAM's uplink port in deparate VLAN and connect
> pppoe server using trunk port or multiple single ports.
The problem is, HOW many VLANS can you open? If I use the Transmode TS
DWDM (GE) and/or CWDM (10GE) then I am limited to 4096 VLAN's.
So, if you have inside this network business customers which require
seperated VLAN routing you run out of VLAN's
Yes, I can use a biger system, but this cost at least twice of the
"Transmode TS" system. Juniper is much more expensive.
> And before implementing this solution consult your DSLAM vendor cause
> ive observed problems in ipdslams when used in bridge/transperant
> mode.
I am already in contact with Iskratel in Kranj/Slovenia, because the
Distributor in Germany is a little bit to small for the Project and I
get direct help from there engineers to implement this.
The only difference between is, that my Servers are running entirely
"Debian GNU/Linux" and where it fit better, FreeBSD.
Thanks, Greetings and nice Day/Evening
Michelle Konzack
Systemadministrator
Tamay Dogan Network
Debian GNU/Linux Consultant
--
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