festprint
SuperAdmin  Posts: 122 Registered: 2/1/03 Status: Online |
posted on 15/3/03 at 00:12
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Join us here for discussions and input of anything
on mesh networking.
Although wireless mesh networking is relatively new,
we would like to include as much information, FAQ
and resources as possible. After all, it is a
Wi-Fi branch and comes under its umbrella.
We are preparing a comprehensive tutorial and FAQ
under the FAQ/Help section. Other resources will also
be added soon.
If you are an experienced or knowledgeable in this
field, get in touch or contribute to our news,
reviews and other sections.
Festprint
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w2jo
Newbie  Posts: 1 Registered: 2/7/03 Status: Offline |
posted on 2/7/03 at 22:01 |
I understand the basic conceipt of Mesh Networking
ala Cisco 350 bridges and etc. What I would
like to have is a technical discussion answering
the following basic questions.
1) If I want to put together an experimental
setup to evaluate Mesh Networking with a main
system feed point and four mesh child
nodes, What would be the best hardware to use
for this experiment? That is: Give me some
part numbers. I want 200mw transmitters if these
are available in these units.
2) Are there any other vendors besides Cisco who
provide Mesh Networking components for commercial
applications. (As opposed to meshnetworks who sells
only to government/military users).
3) As a starting point, how do you generally
decide on where to put your nodes in an outdoor shopping mall installation. (I
know.. This question likely has no concrete answer,
but perhaps there are some basic guidelines I
could use as a starting point.)
Thanks
Joe |
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mohitsaini
Newbie Posts: 1 Registered: 25/8/04 Status: Offline |
posted on 25/8/04 at 14:23 |
hi, I saw ur posting. I m a relatively new to
Wi-Fi.
Can u guide me on these points in Wi-Fi Mesh
Networking.
1) Can we make a wi-fi mesh network which can
be placed outdoors and where around 40-80 repeater
access points are connected through one Root AP.
Can this be done for data transfer rates as low
as 100KBPS. (we do not want high data rates)
2) If this can be done, then what are the
equipments used for this. what can be the
approximate cost?
3) can u suggest some company that can setup
this sort of a network for a mini-township.
Ur suggestions shall be grately helpful
Thanks and Best Regards,
Mohit Saini |
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wifimesh
Newbie Posts: 1 Registered: 23/11/04 Status: Offline |
posted on 23/11/04 at 14:13 |
Hi all! Just joined the Forum but have knowledge
and experience in the field for mesch and
traditional WLAN architectures. There are many variants
related to your questions as to how many WAPs
and/or relays. If you have one Root AP, your
begging for a complete network failure when and if
it does happen. It is not a recommended design.
The way mesh works is to wirelessly hop in one
direction or the other, point to multi-point in
order to pass through a relay and eventually get
the wired network. There are many vendors all
having their own secret sauce or algorithms used to
do mesh. What you described is a star topology,
which does not scale well and is not recommended
for performance and is a single point of
failure.
There should be more than one Ethernet drop to
the wired network when working with mesh architectures
even if you have a need for low data
rates.
The many factors involved include distance, antenna
dbi gain or possibly amplifiers and really, one
must determine first what the application itself is
and then design a mesh network to support it.
In terms of Manufacturers, there are vendors such
as Strix Systems, Tropos, Bell Air, Firetide, Mesh
Networks and others - these are primarily the top
vendors on the list. Some of these vendors use
wireless hops using WDS, a common methodology of
relaying between the WAPs or bridges. Those that
use bridges have additional latency involved because
of the protocols and technology used. Most of these
can do WDS but need to be on the same
wireless channel (1, 6 or 11) in order to do
it. Most of these can only use 802.11b. However,
there are some vendors that can also do 802.11g.
Most, but not all use a single radio on a
relay, which degrades the data rate each wireless
hop to roughly 50% due to the radio being
simplex / half duplex.
In terms of your question 3, there are available
integrators and resellers that know how to design,
have the tools to design, and can install mesh
WLAN networks. It all depends on where you are.
Regards, __________________________________
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fdacosta
Newbie Posts: 1 Registered: 4/12/04 Status: Offline |
posted on 4/12/04 at 00:19 |
1. For those who have some wired networking
experience, the analogy between wired switch stacks
and mesh networking is explained under:
meshdynamics /TechOverview.html
2. For those those who want to get a sense of
competing mesh architectures:
meshdynamics /WhyStructuredMesh.html
Francis daCosta
Founder and CTO
fdacosta@meshdynamics |
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lucaspaciolu
Junior Member  Posts: 14 Registered: 21/1/05 Status: Offline |
posted on 21/1/05 at 14:07 |
good information, thank you.
Lucas Paciolu
lucaspaciolu@yahoo.com
http://www.okeda.com.ar |
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