how router select best path

6:55

15:01

5:53

7:44

3:50

3:59

12:07

15:26

1:47:57

7:32

13:50

10:38

8:45

24:26

15:22

1:51

31:02

9:26

2:35

5:42

1:15:02

16:07

2:03

1:28

1:50

2:53

10:21

19:16

3:08

6:14

9:04

19:57

14:33

1:45

7:22

25:37

15:28

15:41

27:55

19:45

14:59

9:57

1:46

5:28

14:05

3:48

9:35

34:33

28:23

3:59

6:55

6:55

11:50

23:06

11:00

14:55

5:33

8:59

4:46

6:25