Can i get an explanation for the below message "flush request sent".
28) Event:(null), length:159, at 352708 usecs after Thu Dec 11 02:31:06 2014
stp_flush_vlans_multi_port(2671): # of flush requests sent: (a) this batch: 1, (b) total: 3515; # of ports flushed: (a) this batch: 54, (b) total: 113449
