Journal of Electrical and Computer Engineering / 2010 / Article / Tab 1

Research Article

A Case Study of the Accuracy of SNMP Measurements

Table 1

Error sizes: “missing” refers to the total number of missing data points from either end of the link (out of 23,498 entries). M and SD are the mean and standard deviations of the relative error calculated as described in the text.

Source   Destination Missing M SD

Atlanta   Houston 8 −4.9e−05 0.0054
Houston   Atlanta 1 2.9e−05 0.0049
Atlanta   Indianapolis 178 −1.5e−05 0.0065
Indianapolis   Atlanta 173 −3.8e−05 0.0066
Atlanta   Washington 5 −3e−05 0.0054
Washington   Atlanta 1 −3.4e−05 0.0065
Chicago   Indianapolis 3 −6e−05 0.0060
Indianapolis   Chicago 3 2.8e−05 0.0056
Chicago   New York 2 1.6e−05 0.0039
New York   Chicago 7 −3.3e−05 0.0041
Denver   Kansas City 5 −3.9e−05 0.0061
Kansas City   Denver 5 1.8e−05 0.0034
Denver   Sunnyvale 5 −7.9e−06 0.0041
Sunnyvale   Denver 6 −6.1e−06 0.0054
Denver   Seattle 5 6.3e−06 0.0048
Seattle   Denver 5 −2.9e−05 0.0049
Houston   Kansas City 5 −1.3e−05 0.0072
Kansas City   Houston 5 −3.3e−05 0.0063
Houston   Los Angeles 5 7.6e−05 0.0078
Los Angeles   Houston 5 −3.9e−05 0.0053
Indianapolis   Kansas City 4 4.3e−05 0.0048
Kansas City   Indianapolis 5 −3.6e−05 0.0054
Los Angeles   Sunnyvale 5 2.1e−05 0.0040
Sunnyvale   Los Angeles 5 −3.7e−05 0.0043
New York   Washington 6 −4.7e−05 0.0066
Washington   New York 6 4.3e−06 0.0038
Sunnyvale   Seattle 4 −1.1e−06 0.0066
Seattle   Sunnyvale 4 3.1e−05 0.0054