6. F5 BIG-IP

14. Load Balancer
Application Application Application Application Application
Server Server Server Server Server

15. Load Balancer
Application Application Application Application Application
Server Server Server Server Server

29. www IN A 192.168.0.10
www IN A 192.168.0.20

30. www IN A 192.168.0.10
www IN A 192.168.0.20

31. www IN A 192.168.0.10
www IN A 192.168.0.20
nslookup www

32. www IN A 192.168.0.10
www IN A 192.168.0.20
nslookup www
→192.168.0.10

33. www IN A 192.168.0.10
www IN A 192.168.0.20
nslookup www
→192.168.0.10
nslookup www

34. www IN A 192.168.0.10
www IN A 192.168.0.20
nslookup www
→192.168.0.10
nslookup www
→192.168.0.20

35. www IN A 192.168.0.10
www IN A 192.168.0.20
nslookup www
→192.168.0.10
nslookup www
→192.168.0.20

40. DNS
iDC 2
iDC 1

41. DNS
iDC 2
iDC 1

47. DNS
US
JP

48. DNS
US
JP

49. DNS
US
JP

50. DNS
US
JP

51. GeoIP
DNS
US
JP

52. GeoIP
DNS
US
JP

61. Balancer

90. http://example.com
/css
/image

91. http://example.com
static file serv
/css
/image

92. http://example.com
static file serv
/css
/image

93. http://example.com
static file serv
/css
/image
App serv

94. http://example.com
static file serv
/css
/image
App serv

96. http://example.com
/css
/image

97. http://example.com
/css
/image

98. http://example.com
/css
/image

99. http://example.com
/css
/image

100. http://example.com
/css
/image sorry serv

101. http://example.com
/css
/image sorry serv

102. http://example.com
/css
/image sorry serv

158. 500

159. 500