ARB algorithm(bidirectional) stage B(transmission of the minimum ID) Nodes with ID<2k send the min id of their neighbors's IDs(2k rounds) 24,7 78 4 phase k 7 2,57 transmitter ID: IDs of neighbors1 2 4 5 10 7 8 11 1,4 4,5 4,7 7,8 2,5,7 2 ARB algorithm (bidirectional) 2,4,7 :transmitter ID :IDs of neighbors phase k stage B (transmission of the minimum ID) Nodes with ID≤2 k send the min ID of their neighbors’s IDs (2 k rounds)