On Fri, 20 Feb 2015, Andrew Mcgregor wrote:
Why? PIM and MLD snooping are pretty standard on very low-end
enterprise switches, which will be next year's midrange consumer models.
If the dumb-as-rocks stuff goes away, that would generally make people
happier.
There are enterprise switches out there currently (pretty expensive ones)
that still do not have MLD snooping, and the ones having PIM snooping is
most likely a lot less. I've been in the networking industry for close to
20 years, the first "bridge" I laid hands on was a pretty advanced thing
back in the time with 3 AUI ports, and could barely do 10 megabit/s. I've
then seen the evolution into 100meg hubs, then 10/100 dual speed hubs
(basically two hubs with a switch in between), to 10/100 switches with all
ports switched, to gig equivalent etc. During this entire time, switches
that could do IGMP snooping has always been substantially more expensive,
mostly (I guess) they couldn't be implemented in pure switch silicon, but
always required administration interface, operating system etc. Still
today, these typically cost 100 USD or more, when you can buy a stupid one
for 30USD. So yes, over time this might change, but I still think there
will be cost involved. It might be that the homenet "routers" are going to
look quite different than the typical router we see today when it comes to
phsyical ports. Or perhaps they're only going to have 2-3 ports and the
rest is going to be wifi. What do I know.
What I do know is that so far, cable has always been a lot better than
radio. Lots of support calls to ISPs end up being related to wifi
problems. I have CAT6 to every room in my apartment, but then again, I am
not a typical user. However, I often speak to people who have performance
problems who then end up pulling a physical cable and after that their
problems are solved.
With 60GHz wifi, you're going to need line-of-sight to every AP from the
clients, which will probably be located in the ceiling in every room where
you want good performance. These APs are going to need physical cables for
uplinks to get any meaningful bump in performance.
I have thought of this as mostly L3 network. I thought the service
discovery problem between subnets was being solved or had been solved.
From the discussion here the past few days it's clear to me now that the
mind image of what a future homenet is differs a lot between participants
in this working group.
--
Mikael Abrahamsson email: [email protected]
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