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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Recommendation of Tools
Lee, Steven (NSG Malaysia) wrote: > Hi all, do you have any recommended tools that can measure latency/delay > hop by hop basis? Preferable the tools can measure the running (live) > traffic. Tools like smokeping, mtr, traceroute and all that will give you highly skewed results, whose accuracy will usually depend entirely on how busy the CPU is which responds to host IP packets (whether icmp, udp or even tcp). As most large routers push everything through hardware, if you measure your hop latency using inline router response times, your results will be trash. If you want to do this properly, you will need to install dedicated measurement hosts hanging off each router and measure response times to them instead. RIPE TTM boxes are pretty good for this: http://www.ripe.net/ttm/ Nick
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