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[doc] backup-redmine/2017-07-13, master: doc: batman-adv/Ap-isolation (08e48269)
by postmaster＠open-mesh.org 14 Jul '17

14 Jul '17

Repository : ssh://git@open-mesh.org/doc On branches: backup-redmine/2017-07-13,master >--------------------------------------------------------------- commit 08e48269d2066e38c5550780babaa0cc08c47ef5 Author: Martin Hundebøll <martin(a)hundeboll.net> Date: Sun Feb 19 20:53:46 2012 +0000 doc: batman-adv/Ap-isolation >--------------------------------------------------------------- 08e48269d2066e38c5550780babaa0cc08c47ef5 batman-adv/Ap-isolation.textile | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/batman-adv/Ap-isolation.textile b/batman-adv/Ap-isolation.textile index 0b92fe15..4500c520 100644 --- a/batman-adv/Ap-isolation.textile +++ b/batman-adv/Ap-isolation.textile @@ -2,7 +2,7 @@ h1. Ap-isolation h3. What is it? -Like any commercial Access Point, the "Access Point Isolation" is that feature which prevent any communication between stations connected to the same infrastructured BSSID. B.A.T.M.A.N.-Advanced replicates the same behaviour by denying communications between clients connected to their nodes through a wireless link. Note that communications from and to clients connected through a WIRED link are left untouched. +Like any commercial Access Point, the "Access Point Isolation" is a feature that prevents any communication between stations connected to the same infrastructured BSSID. B.A.T.M.A.N. Advanced replicates the same behaviour by denying communication between clients connected to their nodes through a wireless link. Note that communication from and to clients connected through a wired link is left untouched. !ap-isola-75.png! @@ -17,7 +17,7 @@ batctl ap 1 </pre> To disable it, just switch 1 to 0 -Note that packets are checked either at the sender and at the receiver node, therefore, if at least one of those enabled the AP-Isolation, the communication is forbidden. However we strongly suggest to enable the AP-Isolation on all the nodes in order to prevent wasting of resources (e.g. send of data over the mesh knowing that it is going to be dropped at the receiver) +Note that packets are checked either at the sender or the receiver node, therefore, if at least one of those have AP-Isolation enabled, the communication is forbidden. However we strongly suggest to enable the AP-Isolation on all the nodes in order to prevent wasting of resources. (E.g. send of data over the mesh knowing that it is going to be dropped at the receiver.) h3. Technical details

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[doc] backup-redmine/2017-07-13, master: doc: batman-adv/Ap-isolation (5a308af4)
by postmaster＠open-mesh.org 14 Jul '17

14 Jul '17

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[doc] backup-redmine/2017-07-13, master: doc: batman-adv/Ap-isolation (2961852a)
by postmaster＠open-mesh.org 14 Jul '17

14 Jul '17

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[doc] backup-redmine/2017-07-13, master: doc: attachments/ap-isola-75.png (9c4a9081)
by postmaster＠open-mesh.org 14 Jul '17

14 Jul '17

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[doc] backup-redmine/2017-07-13, master: doc: batman-adv/Doc-overview (8f8a094c)
by postmaster＠open-mesh.org 14 Jul '17

14 Jul '17

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[doc] backup-redmine/2017-07-13, master: doc: batman-adv/Ap-isolation (edc3cc98)
by postmaster＠open-mesh.org 14 Jul '17

14 Jul '17

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[doc] backup-redmine/2017-07-13, master: doc: batman-adv/SubmittingLinux (852af31a)
by postmaster＠open-mesh.org 14 Jul '17

14 Jul '17

Repository : ssh://git@open-mesh.org/doc On branches: backup-redmine/2017-07-13,master >--------------------------------------------------------------- commit 852af31a67f0ffe182f4e82a9bba7adb1619bfe9 Author: Marek Lindner <mareklindner(a)neomailbox.ch> Date: Mon Feb 13 09:50:09 2012 +0000 doc: batman-adv/SubmittingLinux >--------------------------------------------------------------- 852af31a67f0ffe182f4e82a9bba7adb1619bfe9 batman-adv/SubmittingLinux.textile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/batman-adv/SubmittingLinux.textile b/batman-adv/SubmittingLinux.textile index 8b074e43..0b5ab926 100644 --- a/batman-adv/SubmittingLinux.textile +++ b/batman-adv/SubmittingLinux.textile @@ -104,7 +104,7 @@ Here you should see the * Removed CHANGELOG * new added Kconfig * A special Makefile which only contains obj-$(CONFIG_BATMAN_ADV) and many batman-adv-y lines -* removed Makefile.kbuild, README, compat.c, compat.h +* removed Makefile.kbuild, README, README.external, compat.c, compat.h, gen-compat-autoconf.sh * removed references to compat.h from main.h * (Re)Moved sysfs-class-net-batman-adv and sysfs-class-net-mesh

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[doc] backup-redmine/2017-07-13, master: doc: batman-adv/Bridge-loop-avoidance-II (790f022f)
by postmaster＠open-mesh.org 14 Jul '17

14 Jul '17

Repository : ssh://git@open-mesh.org/doc On branches: backup-redmine/2017-07-13,master >--------------------------------------------------------------- commit 790f022f2f45801551f57f6ea8fad1afd52a4837 Author: Simon Wunderlich <sw(a)simonwunderlich.de> Date: Sun Feb 12 18:06:13 2012 +0000 doc: batman-adv/Bridge-loop-avoidance-II >--------------------------------------------------------------- 790f022f2f45801551f57f6ea8fad1afd52a4837 batman-adv/Bridge-loop-avoidance-II.textile | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/batman-adv/Bridge-loop-avoidance-II.textile b/batman-adv/Bridge-loop-avoidance-II.textile index 2fb37727..fd939839 100644 --- a/batman-adv/Bridge-loop-avoidance-II.textile +++ b/batman-adv/Bridge-loop-avoidance-II.textile @@ -148,9 +148,9 @@ h3. Limitations: h3. Questions -Please add any comments or questions for the next discussion here: +Please add any comments or questions for the next discussion here (for general question, please use the mailing list. more info: http://www.open-mesh.org/wiki/open-mesh/MailingList): -Under Discussion -> Features you say "no BATMAN packets on the backbone". +Question (???, ???): Under Discussion -> Features you say "no BATMAN packets on the backbone". Why would you want to use the mash (which never has enough bandwidth anyway) if you have a fast, reliable backbone link between some of the nodes. Wouldn't it make more sense to get as much done through the backbone as possible? Answer (Simon, 2012-02-12): you can explicitly use batman-adv on the mesh if you want to - batman-adv allows adding Ethernet interfaces as well. This is a good idea if you have full control over your LAN. However, there are users who don't want to see batman-adv ethernet frames (with its special ethertype 0x4305) on their LAN, because some firewalls recognize it as malicious traffic. Therefore, one design goal of blaII was to keep batman-adv packets out of the backbone LAN in the default case. \ No newline at end of file

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[doc] backup-redmine/2017-07-13, master: doc: batman-adv/Ap-isolation (ec9e303b)
by postmaster＠open-mesh.org 14 Jul '17

14 Jul '17

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[doc] backup-redmine/2017-07-13, master: doc: open-mesh/ResearchProposals (b0d43d55)
by postmaster＠open-mesh.org 14 Jul '17

14 Jul '17

Repository : ssh://git@open-mesh.org/doc On branches: backup-redmine/2017-07-13,master >--------------------------------------------------------------- commit b0d43d5584897a3a4cc19f3b5a3f2671da114bd1 Author: Antonio Quartulli <a(a)unstable.cc> Date: Sat Feb 18 17:51:42 2012 +0000 doc: open-mesh/ResearchProposals >--------------------------------------------------------------- b0d43d5584897a3a4cc19f3b5a3f2671da114bd1 open-mesh/ResearchProposals.textile | 75 +++++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) diff --git a/open-mesh/ResearchProposals.textile b/open-mesh/ResearchProposals.textile new file mode 100644 index 00000000..b2e71d23 --- /dev/null +++ b/open-mesh/ResearchProposals.textile @@ -0,0 +1,75 @@ +h1. Research Proposals on B.A.T.M.A.N.-Advanced + +h3. Improving link metrics + +The sheer measurement of the OGM delivery ratio is +a poor metric for link quality evaluation. +It is not able to distinguish fast links from slow ones, +it is not able to tell congested links apart from +unused ones, it is not able to distinguish point-to-point +links from broadcast ones. +Improving the link evaluation metrics without becoming +dependent from the specific link-level technology is however +a challenge. Exploring the role of delay, delay jitters, information +coming from the data plane (for instance in 802.11 data packets are +sent at different link speeds depending on the actual destination +and not at the base speed used for broadcast) can yield results +leading to improved metrics. + +h3. Improving multi-radio strategy + +In presence of multiple (wireless and wired) interfaces +the present strategies for interface selection in Batman are +based on simple and non-general heuristics, with the +consequence that very often sub-optimal decisions are taken. +To improve these strategies the following fundamental points need +attention and solutions: +a) Capability to differentiate between different MAC/PHY layers +(e.g., a reliable 1Gbit/s optical link from WiFi, or also a +reliable point-to-point WiFi bridge from a generic multi-point +WiFi interface). +b) Metrics and algorithms for iteratively improving the topology +based on the above information. + +h3. Improving Broadcast communications + +Some applications, specially related to network management like +????, or to services publish/subscribe models, require efficient +and reliable broadcast/multicast (IP layer) communications, which +are however always mapped onto layer 2 broadcast packets. +Presently batman transmits these packets 3 times, with a large overhead +and still no guarantee of delivery. +Many solutions can be studied, starting from intelligent re-broadcast +to multiple-unicast flooding. + +h3. Improving Multicast communications + +(partly started, there + is a concept and a partial implementation) +Interacts with the point above ... PIM Sparse/Dense mode can be +analyzed and extended to wireless networks (PIM per-se cannot +work on wireless interfaces). + +h3. Define a Neighbor discovery independent protocol + +(partly started - ELP. There is a partial concept and partial implementation) + +h3. Fast dead link detection or Fast link switching + +Would also improve mobility + +h3. Security/Authentication + +Adding a security and authentication layer to protect batman +messages from malicious or malfunctioning nodes. + +h3. Distributed filtering + +Packet filtering in ad-hoc and mesh networks can help to define +different user profiles, reduce the impact of unwanted traffic and +make the network more robust to attacks. The problem of implementing a +network-wide filtering policy to be enforced in all the mesh nodes +with user-level granularity must still be resolved since the diffusion +of rule-sets and their enforcement has a great impact in a +resource-limited networks both for the generated traffic and the +computation required. \ No newline at end of file

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