Repository : ssh://git@open-mesh.org/doc

On branches: backup-redmine/2017-07-13,master

commit 24a56bfb24f88e7c10196ac5e4bdebed485f54d6 Author: Marek Lindner mareklindner@neomailbox.ch Date: Sun May 22 20:04:27 2011 +0000

doc: batman-adv/Client-announcement

24a56bfb24f88e7c10196ac5e4bdebed485f54d6 batman-adv/Client-announcement.textile | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/batman-adv/Client-announcement.textile b/batman-adv/Client-announcement.textile index b1e69950..dd13b78f 100644 --- a/batman-adv/Client-announcement.textile +++ b/batman-adv/Client-announcement.textile @@ -4,13 +4,13 @@ Each mesh protocol offering network access to non-mesh clients needs a 'client a

h2. The local translation table

-Every client MAC address that is recognised through the mesh interface will be stored in a node local table called "local translation table" which will contain all the clients the node is currently serving. This table is the information a node has to spread among the network in order to make clients reachable. This because when a node wants to contact a particular client, thank to this information, it knows the originator it has to send the data to. -Each node local table has a particular attribute: the translation table version number (ttvn). The value of this attribute represents the version of the table: each time the node decide to spread the table around, if something happened since last spread (a client has been added/removed), the ttvn is incremented by one. -In this way, two tables belonging to the same node can be chronologically ordered and it is moreover possible to decide whether they are different or not without checking all the entries. Moreover the translation table version number if a new OGM field and it will contain the originator ttvn value at the moment of sending. +Every client MAC address that is recognized through the mesh interface will be stored in a node local table called "local translation table" which will contain all the clients the node is currently serving. This table is the information a node has to spread among the network in order to make clients reachable. This is because when a node wants to contact a particular client, thanks to this information, it knows the originator it has to send the data to. +Each node local table has a particular attribute: the translation table version number (ttvn). The value of this attribute represents the version of the table that is incremented by one each time the local table changes (a client has been added/removed). For optimization reasons all changes which happen within the same OGM interval are aggregated into a single ttvn. +Every OGM broadcast contains the current ttvn and a crc16 value of the local table to allow the receiving nodes to quickly decide whether they tables are in sync or not.

h2. The global translation table

-Every node in the network has to store all the other node local tables. To achieve this, another table is needed: the "global translation table". It is a set of entries where each of them contains the client MAC address and a pointer to the originator that is currently announcing it. +Every node in the network has to store all the other node's local tables. To achieve this, another table is needed: the "global translation table". It is a set of entries where each contains the client MAC address and a pointer to the originator that is currently announcing it.

h2. Updating the tables