Thomas Kunz
Systems and Computer Engineering
11
MAODV (cont)
nFirst node to join a group becomes leader
nLeader periodically broadcasts group hello messages (including updated group sequence number)
nMulticast tree based on hard state, nodes joining or
leaving require action to
reconfigure the tree
nDownstream nodes who detect link failure will try to reconnect to tree
nIn case of network partition, two trees get established,
after network partitions
merge, multicast trees are merged again as well.
ØOne node will receive two group hello messages for some multicast group and will ask the leader with lower ID
for permission to reconnect
and will do so by joining multicast group