Hello, I'm currently using the MSTPd daemon on a custom PowerPC based board and I notice that when forced in RSTP mode a port trnasition to the forwarding state, sometimes, needs about 1.2s and, sometimes, needs about 80ms! When the transition is quick I get the following log: 1038912050.392513: bridge_bpdu_rcv: ifindex 6, len 60 1038912050.397313: MSTP_IN_rx_bpdu: br0:mrvl4 received RST BPDU 1038912050.431810: PISM_to_UPDATE: br0:mrvl4:0 1038912050.436557: PISM_to_CURRENT: br0:mrvl4:0 1038912050.440949: PISM_to_RECEIVE: br0:mrvl4:0 1038912050.445431: PISM_to_NOT_DESIGNATED: br0:mrvl4:0 1038912050.449905: PISM_to_CURRENT: br0:mrvl4:0 1038912050.468990: MSTP_OUT_set_state: br0:mrvl4:0 entering learning state 1038912050.476744: set_port_role: port mrvl4 role 3 1038912050.483704: MSTP_OUT_set_state: br0:mrvl4:0 entering forwarding state 1038912050.488299: set_port_role: port mrvl4 role 3 1038912050.506378: MSTP_OUT_flush_all_fids: br0:mrvl5:0 Flushing forwarding data base 1038912051.199682: MSTP_OUT_tx_bpdu: br0:mrvl4 sending RST BPDU On the other hand when the transition is slow I get: 1038911701.406963: bridge_bpdu_rcv: ifindex 6, len 60 1038911701.411766: MSTP_IN_rx_bpdu: br0:mrvl4 received RST BPDU 1038911701.446256: PISM_to_RECEIVE: br0:mrvl4:0 1038911701.451015: PISM_to_SUPERIOR_DESIGNATED: br0:mrvl4:0 1038911701.455493: PISM_to_CURRENT: br0:mrvl4:0 1038911702.021584: PISM_to_UPDATE: br0:mrvl4:0 1038911702.026330: PISM_to_CURRENT: br0:mrvl4:0 1038911702.204368: PISM_to_UPDATE: br0:mrvl4:0 1038911702.209114: PISM_to_CURRENT: br0:mrvl4:0 1038911703.199645: MSTP_OUT_tx_bpdu: br0:mrvl4 sending RST BPDU 1038911703.224464: MSTP_OUT_set_state: br0:mrvl4:0 entering learning state 1038911703.232292: set_port_role: port mrvl4 role 3 1038911703.245552: bridge_bpdu_rcv: ifindex 6, len 60 1038911703.250359: MSTP_IN_rx_bpdu: br0:mrvl4 received RST BPDU 1038911703.284849: PISM_to_RECEIVE: br0:mrvl4:0 1038911703.289604: PISM_to_NOT_DESIGNATED: br0:mrvl4:0 1038911703.294079: PISM_to_CURRENT: br0:mrvl4:0 1038911703.313165: MSTP_OUT_set_state: br0:mrvl4:0 entering forwarding state Note that my machine is NOT the root bridge and the connection is a simple ring where I remove the connection between the other two machines. Any advice? :) Ciao, Rodolfo -- GNU/Linux Solutions e-mail: giometti@xxxxxxxxxxxx Linux Device Driver giometti@xxxxxxxx Embedded Systems phone: +39 349 2432127 UNIX programming skype: rodolfo.giometti Freelance ICT Italia - Consulente ICT Italia - www.consulenti-ict.it
