[160365] in North American Network Operators' Group
Re: Muni fiber: L1 or L2?
daemon@ATHENA.MIT.EDU (Masataka Ohta)
Mon Feb 4 17:29:11 2013
Date: Tue, 05 Feb 2013 07:28:27 +0900
From: Masataka Ohta <mohta@necom830.hpcl.titech.ac.jp>
To: nanog@nanog.org
In-Reply-To: <5110256F.6000009@vaxination.ca>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Jean-Francois Mezei wrote:
> This is where one has to be carefull. The wholesale scenario in Canada
> leaves indepdendant ISPs having to explain to their customers that they
> can't fix certain problems and that they must call the telco/cableco to
> get it fixed. (in the case of a certain cable company, they can't even
> call them, it has to be done by email with response of at least 48 hours).
>
> So splitting responsabilities can be an annoyance if it becomes very
> visible to the end users.
No different from competing ISPs using DSL or PON.
> Another aspect: customers espect to be able to switch seamlessly from
> one ISP to the next. But ISP-2 can't take over from ISP-1 until ISP-1
> has relinquised control over the line to the end user.
No different from competing ISPs using DSL or PON.
> In a layer 1
> scenario, it means ISP-1 has to physically go and deinstall their CPE
> and disconnect strand from their OLT, and then ISP-2 can do the reverse
> and reconnect evrything to provide services.
No. Just say optical MDF.
> What happens when ISP-1 isn't interested in a quick disconnect and ISP-2
> has to wait days/weeks with end use without service ?
You assume ISP-1 quickly stop servicing the end user, don't you?
> In a layer2 service, it is a matter of reconfiguring the OLT to pass
> ethernet packets to a different VLAN to a different ISP. No physical
What happens when OLT operator isn't interested in a quick
reconfiguration, ISP-1 quickly stop servicing the end user
and ISP-2 has to wait days/weeks with end user without service?
Masataka Ohta
