festprint
SuperAdmin  Posts: 114 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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