[SW1] cat /sys/class/net/br0/bridge/ageing_time
cat /sys/class/net/br0/bridge/ageing_time
30000
/ # 
/ # 

[SW1] brctl setageing br0 5; cat /sys/class/net/br0/bridge/ageing_time
brctl setageing br0 5; cat /sys/class/net/br0/bridge/ageing_time
500
/ # 
/ # 

[PC1] ping 192.168.10.20 -c 1 -i 500 -w 1000
ping 192.168.10.20 -c 1 -i 500 -w 1000

84 bytes from 192.168.10.20 icmp_seq=1 ttl=64 time=0.995 ms

VPCS> 

[SW1] brctl showmacs br0
brctl showmacs br0
port no	mac addr		is local?	ageing timer
  1	00:50:79:66:68:00	no		   4.79
  2	00:50:79:66:68:01	no		   4.79
  1	02:42:1c:a3:43:00	yes		   0.00
  1	02:42:1c:a3:43:00	yes		   0.00
  2	02:42:1c:a3:43:01	yes		   0.00
  2	02:42:1c:a3:43:01	yes		   0.00
  3	02:42:1c:a3:43:02	yes		   0.00
  3	02:42:1c:a3:43:02	yes		   0.00
/ # 
/ # 

[SW1] brctl showmacs br0
brctl showmacs br0
port no	mac addr		is local?	ageing timer
  1	02:42:1c:a3:43:00	yes		   0.00
  1	02:42:1c:a3:43:00	yes		   0.00
  2	02:42:1c:a3:43:01	yes		   0.00
  2	02:42:1c:a3:43:01	yes		   0.00
  3	02:42:1c:a3:43:02	yes		   0.00
  3	02:42:1c:a3:43:02	yes		   0.00
/ # 
/ # 

[SW1] brctl setageing br0 300; cat /sys/class/net/br0/bridge/ageing_time
brctl setageing br0 300; cat /sys/class/net/br0/bridge/ageing_time
30000
/ # 
/ # 