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

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

commit e2acfcdf56ab2f81f049ec82bd4f3d9ae1294dae Author: Simon Wunderlich sw@simonwunderlich.de Date: Mon Oct 3 17:27:08 2011 +0000

doc: batman-adv/Bridge-loop-avoidance-II

e2acfcdf56ab2f81f049ec82bd4f3d9ae1294dae batman-adv/Bridge-loop-avoidance-II.textile | 22 ++++++++++++++++++++-- 1 file changed, 20 insertions(+), 2 deletions(-)

diff --git a/batman-adv/Bridge-loop-avoidance-II.textile b/batman-adv/Bridge-loop-avoidance-II.textile index d818ed42..97208294 100644 --- a/batman-adv/Bridge-loop-avoidance-II.textile +++ b/batman-adv/Bridge-loop-avoidance-II.textile @@ -114,8 +114,6 @@ To unclaim a packet, the SRC HW and Ethernet SRC shall be swapped:

Periodic claim packets by the gateways may be sent by also setting the Ethernet SRC to Originator-MAC of the Gateway.

-(TODO: How to synchronize claim tables between gateways - full table update or CRC or something like this should be used) - Note: Although this is a misuse of ARP packets, the "normal" ARP process should not be disturbed as the IP addresses (0.0.0.0) should not be in any sane ARP table. As far as I understand, a gratious ARP should only be considered if the IP address is already in an ARP table [2]. @@ -123,6 +121,26 @@ IP address is already in an ARP table [2]. [1] http://tools.ietf.org/html/rfc826 [2] http://tools.ietf.org/html/rfc2002#section-4.6

++Table Update, Variant 1:+ + +Send the full table (new batman type) through the mesh (!) in unicast mode to all known gateways on the LAN. This +may be optimized by sending to multiple destinations with one packet if the routing neighbor is shared (as for the +tracker packets in the multicast optimization). + +This is sent with the periodic table timer (e.g. every 30 seconds). + ++Table Update, Variant 2:+ + +Send the full table (new batman type) through the mesh (!) in broadcast mode to all nodes (and therefore also to the +gateways on the LAN). This may create some overhead as there are a lot of nodes which don't need this info. :) + +This is sent with the periodic table timer (e.g. every 30 seconds). + ++Table Update, Variant 3:+ + +Attach a CRC at another packet (e.g. the batman packet) and request a full table via unicast through the mesh. + +This is probably the most bandwidth-efficient way, but requires a change in the packet format.

h2. Discussion: