Hybrid Wireless Mesh Protocol: Difference between revisions

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The Hybrid Wireless Mesh Protocol (HWMP), part of IEEE 802.11s, is a basic routing protocol for a wireless mesh network. It is based on AODV (RFC 3561) and tree-based routing.^[1] It relies on a Peer Link Management protocol by which each Mesh Point discovers and tracks neighboring nodes. If any of these are connected to a wired backhaul, there is no need for HWMP, which selects paths from those assembled by compiling all mesh point peers into one composite map.

The HWMP protocol is hybrid, because it consists of a proactive tree-based hierarchical routing protocol, and an on-demand logic, based on the Ad-hoc On Demand Vector protocol (AODV).^[2] In contradiction with classic IP based (ISO level 3) routing, the HWMP protocol is based on ISO level 2 (based on MAC addresses).

HWMP is intended to displace proprietary protocols used by vendors like Meraki for the same purpose, permitting peer participation by open source router firmware. The open source implementation of 802.11s (open80211s) has been integrated into the Linux kernel by Cozybit Inc.^[3] FreeBSD supports HWMP starting with FreeBSD 8.0.^[4]

References[edit]

^ "HWMP Protocol specification". The Working Group for WLAN Standards of the Institute of Electrical and Electronics Engineers. November 2006. Retrieved 2009-05-03.
^ "Developers documentation IEEE 802.11s (Linux Wireless)". wireless.wiki.kernel.org. Retrieved 2021-03-04.
^ open80211s, The open 802.11s implementation, 2021-02-25, retrieved 2021-03-04
^ "WifiMesh".

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[HWMP-1] "HWMP Protocol specification". The Working Group for WLAN Standards of the Institute of Electrical and Electronics Engineers. November 2006. Retrieved 2009-05-03.

[2] "Developers documentation IEEE 802.11s (Linux Wireless)". wireless.wiki.kernel.org. Retrieved 2021-03-04.

[3] open80211s, The open 802.11s implementation, 2021-02-25, retrieved 2021-03-04

[freebsd-4] "WifiMesh".

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-{{unref|date=January 2012}}
+{{refimprove|date=September 2014}}
-'''Hybrid Wireless Mesh Protocol''' ('''HWMP''') defined in [[IEEE 802.11s]], is a basic routing protocol for a [[wireless mesh network]].  It is based on [[AODV]] (RFC 3561) and tree-based routing<ref name="HWMP">{{cite web |url=https://mentor.ieee.org/802.11/public/06/11-06-1778-01-000s-hwmp-specification.doc |title= HWMP Protocol specification |publisher=The Working Group for WLAN Standards of the Institute of Electrical and Electronics Engineers |date=November 2006 |accessdate=2009-05-03 }}</ref>.  It relies on [[Peer Link Management]] protocol by which each Mesh Point discovers and tracks neighboring nodes.  If any of these are connected to a wired [[backhaul (telecommunications)|backhaul]], there is no need for HWMP, which selects paths from those assembled by compiling all mesh point peers into one composite map.
+The '''Hybrid Wireless Mesh Protocol''' ('''HWMP'''), part of [[IEEE 802.11s]], is a basic routing protocol for a [[wireless mesh network]].  It is based on [[AODV]] (RFC 3561) and tree-based routing.<ref name="HWMP">{{cite web |url=https://mentor.ieee.org/802.11/public/06/11-06-1778-01-000s-hwmp-specification.doc |title= HWMP Protocol specification |publisher=The Working Group for WLAN Standards of the Institute of Electrical and Electronics Engineers |date=November 2006 |accessdate=2009-05-03 }}</ref>  It relies on a Peer Link Management protocol by which each Mesh Point discovers and tracks neighboring nodes.  If any of these are connected to a wired [[backhaul (telecommunications)|backhaul]], there is no need for HWMP, which selects paths from those assembled by compiling all mesh point peers into one composite map.
+The HWMP protocol is hybrid, because it consists of a proactive tree-based hierarchical routing protocol, and an on-demand logic, based on the Ad-hoc On Demand Vector protocol (AODV).<ref>{{Cite web|title=Developers documentation IEEE 802.11s (Linux Wireless)|url=https://wireless.wiki.kernel.org/en/developers/Documentation/ieee80211/802.11s|access-date=2021-03-04|website=wireless.wiki.kernel.org}}</ref> In contradiction with classic IP based (ISO level 3) routing, the HWMP protocol is based on ISO level 2 (based on MAC addresses).
-HWMP protocol "is hybrid, because it supports two kinds of path selection protocols. Although these protocols are very similar to routing protocols, but bear in mind, that in case of IEEE 802.11s these use MAC addresses for "routing", instead of IP addresses. Therefore, we use the term "path" instead of "route" and thus "path selection" instead of "routing"". [http://linuxwireless.org/en/developers/Documentation/ieee80211/802.11s]
-HWMP is intended to displace proprietary protocols used by vendors like [[Meraki]] for the same purpose, permitting peer participation by [[open source router firmware]].
+HWMP is intended to displace proprietary protocols used by vendors like [[Cisco Meraki|Meraki]] for the same purpose, permitting peer participation by [[List_of_router_firmware_projects|open source router firmware]]. The open source implementation of 802.11s (open80211s) has been integrated into the [[Linux kernel]] by Cozybit Inc.<ref>{{Citation|title=open80211s|date=2021-02-25|url=https://github.com/o11s/open80211s|publisher=The open 802.11s implementation|access-date=2021-03-04}}</ref>  [[FreeBSD]] supports HWMP starting with FreeBSD 8.0.<ref name="freebsd">{{cite web |url=https://wiki.freebsd.org/WiFi/Mesh|title=WifiMesh}}</ref>
+==References==
+{{Reflist}}
 [[Category:IEEE 802.11]]
 [[Category:Network protocols]]
 {{Compu-network-stub}}