[168891] in North American Network Operators' Group
Re: SIP on FTTH systems
daemon@ATHENA.MIT.EDU (Mark Tinka)
Thu Feb 6 08:07:36 2014
From: Mark Tinka <mark.tinka@seacom.mu>
To: Mikael Abrahamsson <swmike@swm.pp.se>
Date: Thu, 6 Feb 2014 15:06:45 +0200
In-Reply-To: <alpine.DEB.2.02.1402061354430.24915@uplift.swm.pp.se>
Cc: nanog@nanog.org
Reply-To: mark.tinka@seacom.mu
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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On Thursday, February 06, 2014 02:58:14 PM Mikael=20
Abrahamsson wrote:
> Why do you need to authenticate the customer? Don't your
> documentation system know the port/subscriber mapping?
> And why is this secure, instead of being tied to a
> physical connection the customer can now take the
> credentials and move? If the credentials are stolen,
> someone else can impersonate that customer.
Which is why I said DHCP was better than PPPoE.
=46ailing to see where we disagree.
> This worked 10 years ago, it's nothing recent.
In my previous post, I didn't say it was recent. I said it=20
was better than PPPoE if you're deploying FTTH now. What I=20
said was recent was that DHCP_IA and DHCP_IA_PD=20
implementation has improved significantly both in BNG's as=20
well as CPE.
Again, failing to see where we disagree.
> Yes? Since option 82 and friends gives you what port the
> DHCP request came in on, you now log IP/MAC connected to
> a port, and since you know to what apartment/house this
> port is physically connected to, nothing more is needed.
Again, don't see where we disagree.
This is a good thing.
Some operators provide services with no subscriber=20
management (i.e., no PPPoE, no DHCP; just a static IP=20
address documented about where it is, what street, what=20
building, what floor, what apartment, what customer), while=20
other service providers have a subscriber management=20
technique, PPPoE or DHCP, to log all the same information in=20
concert with the backend.
I'm just saying DHCP is better than PPPoE if you're=20
greenfielding FTTH deployments today, and I'm not sure you=20
entirely disagree.
Mark.
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