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RE: [Karlnet] Permit Ethernet Broadcast?

To: "Karlnet Mailing List" <karlnet@WISPNotes.com>
Subject: RE: [Karlnet] Permit Ethernet Broadcast?
From: "Charles Chia Sheng Wu" <cwu@cwlab.net>
Reply-to: Karlnet Mailing List <karlnet@WISPNotes.com>
Date: Sat, 18 Oct 2003 17:07:47 -0500
List-post: <mailto:karlnet@WISPNotes.com>
>Hi,
>    Anyone care to shed some light on the "Permit Ethernet Broadcasts"


sure...these are more NETWORKING than wireless questions, but that command
basically it turns Ethernet Broadcasts ON and OFF

What does that mean? in terms of bridging, an important characteristic of
bridges is that they forward Ethernet broadcasts to all connected segments.
This behavior is necessary, as Ethernet broadcasts are destined for every
node on the network, but it can pose problems for bridged networks that grow
too large. When a large number of stations broadcast on a bridged network,
congestion can be as bad as if all those devices were on a single segment.

Here's an interesting white paper
http://www.cswl.com/whiteppr/white/blocking.html

>and "Permit Ethernet Multicasts" settings, such as >whether or not they're
required, good, bad or other?

In my experience,e for WISP networks, multicast traffic is not really a big
issue

>I can't seem to find any detailed docs on it. I'm interested in TurboCell,
SEC-> AP+, and 802.11b (SmartBridges) ->AP+ contexts.

well, changing how these applies depends on a number of things, namely how
your network is configured

-Charles

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