What is the difference between Adhoc and Mesh ?¶
In wireless networking, Ad-Hoc is one of the modes of operation for an 802.11 radio. It happens at OSI layer 1, the physical layer, and it basically means that all devices can communicate directly to any other device that is within radio range. Normally, in Infrastructure mode, wireless devices can only communicate with a central Access Point or Router and that device is responsible for re-transmitting packets from one client device to another client device (even if they are right next to each other). Ad-Hoc networks get rid of the middle-man that is the AP, however they don’t have any inherent capability for multi-hop. That means, if device A can reach device B, and device B can reach device C, but A cannot reach C, then A and C cannot communicate because B will not re-transmit any packets.
Mesh Networking, also know as Mesh Routing happens at OSI layer 3, the network layer. Mesh Routing allows each device on a network (also called nodes) to act as a router and re-transmit packets on behalf of any other devices. Mesh Routing provide the multi-hop facility that Ad-Hoc mode lacks. By combining Ad-Hoc mode at layer 1 and Mesh Routing at layer 3 we can create wireless mesh networks purely between client devices without any need for centralized Access Points or Routers.
P2P or Peer-to-Peer simply means that clients talk directly to each other without the use of a central server. Both Ad-Hoc and Mesh Routing can be described as P2P as they are both instances of clients-to-client communication, just at different layers of the OSI model.
CREDITS : superuser.com/users/18638/sitwon
Meshnet useful links¶
Description : Contains a list of useful online references to various topics related to the meshnet community
This pad contains some useful links regarding Meshnet in categories like,
- Mesh routing
- Openwrt
- Batman-adv
Chennai mesh site design essentials – pad.riseup.net/p/cmnw-site-content
Mesh Routing
- Wireless LAN concepts – wiki.tafensw.edu.au/sydney/mylearning/i...
- Another useful link to understand WLAN concepts – downloadt.advantech.com/ProductFile/Dow...
OpenWrt
- Getting started with OpenWrt build system – wiki.openwrt.org/doc/howto/build
- Wireless configuration guide (explains what the configuration items mean) – wiki.openwrt.org/doc/uci/wireless
- Generating firmware images using Openwrt Image Generator – wiki.openwrt.org/doc/howto/obtain.firmw...
- Generating packages to be installed after flashing a firmware – wiki.openwrt.org/doc/howto/obtain.firmw...
- Openwrt build system explained in detail (internals) – www.ccs.neu.edu/home/noubir/Courses/CS6...
- Bridged AP in OpenWrt – wiki.openwrt.org/doc/recipes/bridgedap
- Troubleshoot OpenWrt using Failsafe mode – wiki.openwrt.org/doc/howto/generic.fail...
Batman-adv
- Batman-adv overview – www.radiusdesk.com/technical_discussion...
- Batman-adv quick start guide – www.open-mesh.org/projects/batman-adv/w...
- Building batman-adv with Openwrt – www.open-mesh.org/projects/batman-adv/w...
- Creating a mesh network between two nodes – www.radiusdesk.com/technical_discussion...
Captive Portal
- What is a Captive Portal? – en.wikipedia.org/wiki/Captive_portal
- Captive Portal in OpenWrt – wiki.openwrt.org/doc/howto/wireless.ove...
- Create a Captive portal by utilizing already available uhttpd webserver and dnsmasq in openwrt – wiki.openwrt.org/doc/uci/uhttpd, https://wiki.openwrt.org/doc/howto/http.uhttpd, wiki.openwrt.org/doc/howto/dhcp.dnsmasq, https://www.reddit.com/r/openwrt/comments/2k62v9/captive_portal_to_static_websi
te/
Antenna Design
- Learning about Antenna – Theory & Design : www.antenna-theory.com/antennas/main.php
- Designing Yagi antenna – http://www.instructables.com/id/Easy-to-Build-WIFI-24GHz-Yagi-Antenna/
- Sample design values based on attached image – v.etherpad.org/p/Chennaimesh_Yagi_anten...
Others
- List of wireless communities around the world – en.wikipedia.org/wiki/List_of_wireless_...
- Those who know about altermundi from argentina, please also bookmark this : http://libre-mesh.org/
- Synapse wireless white paper – www.synapse-wireless.com/upl/downloads/...
Ad-hoc networks are multi-hop networks where most nodes are wireless and connections and routes are extremely dynamic as the network builds and changes. retro bowl college |
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This pad includes a number of helpful resources on Meshnet organized into sections like basketball legends |
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Best for simple, temporary Sprunki networks where all devices are in close proximity, such as in small group meetings or personal gaming setups. |
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