Possible explanations for a large hop in latency
frnkblk at iname.com
Thu Jun 26 17:51:42 CDT 2008
Our upstream provider has a connection to AT&T (22.214.171.124) where I
relatively consistently measure with a RTT of 15 msec, but the next hop
(126.96.36.199) comes in with a RTT of 85 msec. Unless AT&T is sending that
traffic over a cable modem or to Europe and back, I can't see a reason why
there is a consistent ~70 msec jump in RTT. Hops farther along the route
are just a few msec more each hop, so it doesn't appear that 188.8.131.52
has some kind of ICMP rate-limiting.
Is this a real performance issue, or is there some logical explanation?
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