North American Network Operators Group
Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical

Re: Acceptable DSL Speeds (ms based)

  • From: Florian Weimer
  • Date: Wed May 04 12:59:48 2005 
* Luke Parrish:

> Andrew, traceroute is an effective tool is measuring roundtrip in ms 
> format.

No, it's not, because routers generate ICMP TTL Exceeded packets with
totally different machinery, separated from the forwarding path.  Many
factors influence the ms numbers traceroute reports (MPLS, main CPU
load, priority on internal busses), and only some of them correlate
with forwarding latency.