SIP on FTTH systems
mark.tinka at seacom.mu
Thu Feb 6 14:08:48 UTC 2014
On Thursday, February 06, 2014 03:51:51 PM Anders Löwinger
> This is a deep hole, and basically does not work with
> You need a bunch of stuff, proxy ND, proxy DAD, DHCPv6
> inspection, RA guard and more. One VLAN per customer and
> a separate multicast is much simpler.
If you have a reasonably intelligent AN (like some of
today's Active-E devices), you can create so-called split
horizons on the same bridge domain (VLAN, really) where
customers will only communicate via the upstream BNG at
At Layer 2, even though they are all sitting on the same
VLAN, there is no inter-communication between them.
I've also know Huawei OLT's support these split horizons
> Or do something bold, run L3 at the edge :)
BNG's are too big to distributed that deeply, even in
distributed BNG designs. This would get costly.
Cheap switches that have decent IP/MPLS support are mostly
geared toward Metro-E deployments, i.e., business-grade
services. So they are quite poor with regard to susbcriber
management features and capabilities.
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