Hi , Can some help me on the below scenerios . SW1 : MAC ( AA) SW2 : MAC (BB) SW1 fa0/1  ---------------fa0/1 SW2 1. When a STP BPDU comes out from SW1 its will have Source MAC of the egress interface ( in ethernet header ) and Port ID as fa0/1 inside BPDU Now What happens in this case SW 1 ----------- 3 links ------ SW2 3 links are bundled to one PO ( lets say fa0/1-3 ) 1. How what will be the Source MAC and port ID in the BPDU that egress from SW1 SW 1 ----------- 3 links ------ SW2 How is the Ether-channel determines which interface should be active in the bundle . Whether SW1 or SW2 will have this rights . How is the ether-channel mac picked from the N number of bundled interface. If i have fa0/1-3 in one group . Initially the fa0/1 was active and PO MAC was this fa0/1 MAC . Now i have shut the fa0/1 , so fa0/2 was active and PO MAC changed . Now brought back fa0/1 . But why wtill fa0/2 is active and PO uses fa0/2 MAC ... View more

Hi ,   Can some help me on the below scenerios .   SW1 : MAC ( AA) SW2 : MAC (BB)     SW1 fa0/1  ---------------fa0/1 SW2   1. When a STP BPDU comes out from SW1 its will have Source MAC of the egress interface ( in ethernet header ) and Port ID as fa0/1 inside BPDU   Now What happens in this case   SW 1 ----------- 3 links ------ SW2   3 links are bundled to one PO ( lets say fa0/1-3 )   1. How what will be the Source MAC and port ID in the BPDU that egress from SW1     SW 1 ----------- 3 links ------ SW2   How is the Ether-channel determines which interface should be active in the bundle . Whether SW1 or SW2 will have this rights . How is the ether-channel mac picked from the N number of bundled interface.   If i have fa0/1-3 in one group . Initially the fa0/1 was active and PO MAC was this fa0/1 MAC . Now i have shut the fa0/1 , so fa0/2 was active and PO MAC changed . Now brought back fa0/1 . But why wtill fa0/2 is active and PO uses fa0/2 MAC ... View more