Figure 4: Traffic estimation worksheet

Input:

Home Page Size (bytes):

Number of graphics:        2
Average Graphic storage    95000
Text                       800

Tier One Level

Avg Number of Graphics     1
Average Graphics Storage   75000
Average text/page          1000

Tier Two Level

Avg Number of Graphics     0
Average Graphics Storage   0
Average text/page          1500

Traffic Estimates:
Busy hour hits:            750
Page Access Distribution
Home Page              60
Tier One          25
Tier Two          15

LAN Constraints

LAN operating rate         10000000
Number of LAN stations     25
LAN saturation percent     60

Output:

Home Page

Total Bytes home page:    190800
Avg Bytes per hit:         114480

Tier One
Total Bytes tier 1 page:  76000
Avg Bytes per hit:         19000

Tier Two
Total Bytes tier 2 page:  1500
Avg Bytes per hit:         225

Total:
Avg Bytes per hit:         133705

WAN Line Operating Rate
KBPS:                 223

Avg LAN bandwidth for
Web Server:
in KBPS:                   240