[143278] in North American Network Operators' Group
Re: FTTH CPE landscape
daemon@ATHENA.MIT.EDU (Owen DeLong)
Fri Aug 5 04:26:47 2011
From: Owen DeLong <owen@delong.com>
In-Reply-To: <56449.1312504719@turing-police.cc.vt.edu>
Date: Fri, 5 Aug 2011 01:23:55 -0700
To: <Valdis.Kletnieks@vt.edu>
Cc: NANOG <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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On Aug 4, 2011, at 5:38 PM, <Valdis.Kletnieks@vt.edu> wrote:
> On Thu, 04 Aug 2011 13:30:35 PDT, Owen DeLong said:
>> On Aug 4, 2011, at 8:35 AM, Jay Ashworth wrote:
>>>> - Generic consumer grade NAT/Firewall
>>>=20
>>> Hobby horse: please make sure it support bridge mode? Those of us =
who
>>> want to put our own routers on the wire will hate you otherwise.
>>>=20
>>=20
>> Why? As long as it can be a transparent router, why would it need to =
be
>> a bridge?
>=20
> I must be having a senior moment, but what in the world is a =
"transparent
> router" and how is it different from running in bridged mode? (Note =
that if if
> it's transmogrifying the packets in some way, it's not really =
transparent, and
> if it's not, it's basically bridging...)
>=20
A transparent router (sorry, poor choice of terminology on my part) is a =
router
which doesn't NAT or become selectively opaque (firewall). In other =
words,
it forwards packets and it doesn't do any other arbitrary things to them =
at the
whim of the ISP, but, rather passes along what the customer gives it to =
the
ISP and vice versa without interference.
It differs from a bridge in that it terminates the collision and =
broadcast domains
on either side of it.
Owen
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