Dave Taht wrote on 23/10/2019 08:56:
has anyone here had much chance to review this?
Thanks for the prompt.
From a pure Homenet perspective, it reinforces that L3 routing is the
correct solution for segmenting networks where end nodes have different
characteristics. e.g. battery powered or different underlying LAN
technology. And maybe we need a firewall in front of those segments to
prevent inbound scanning traffic overloading the link.
Other than that I'm not sure it says much more than "Multicast is great
for efficiency, until it isn't".
Section 3.2.4:
> On a wired network, there is not a huge difference between unicast,
multicast and broadcast traffic.
I'd dispute this statement as being overly generic. Anyway, it doesn't
add much to the discussion (about wireless).
The majority of modern wired Ethernets are actually effectively point to
point networks, with multicast and broadcast being emulated in silicon
or software.
Although maybe having a less visible impact than on wireless, multicast
and broadcast can also have some similar operational impact on wired
networks (waking nodes unnecessarily, switching via a slow (software)
path in the main processor, https://tools.ietf.org/html/rfc6583 etc.).
--
regards,
RayH
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