Animated Reachability Graph
Les Cottrell,
Last Update: November 9, 1996
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SLAC Computer Services (SCS) |
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Reachability of Hosts that SLAC Pings
SLAC pings about 50 hosts in about 12 countries. They are grouped into
5 groups: ESnet hosts, Western half of N. America, Eastern half of N. America,
International (Europe & Japan), and ISDN/ISP hosts in the San Francisco
Bay Area. The animated graph below shows the average unreachability,
where:
unreachability = 1 - reachability, and
reachability =
# 30 min intervals for which the host was unreachable /
Total # intervals
To replay the animation click on your browser's reload
button.
![[a 3D Excel plot of % unavailable vs. host vs. month]](animated-avail.gif)
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Les Cottrell