Re: Traceroute versus other performance measurement

[Joel Jaeggli <joelja () darkwing uoregon edu>]

On Wed, 29 Nov 2000, Daniel Senie wrote:

<SNIP>

> All the theory sounds great. Now, you've got a customer using the utility to
> test a circuit between two boxes, and calls to complain that he's only
> seeing 1/2 of the expected bandwidth, because Pathchar tells him he's
> getting X, and we said we provisioned 2X. Perhaps it's just a customer
> education issue.

At the expense of using all their bandwidth ttcp should provide some
reasonable measure of performance under those circumstances.

> I think you're making assumptions about how load is shared on parallel
> links. Often this is done by hashing the IP address or mac address of the
> packets as a way to ensure there will be no packet reordering issues on the
> parallel links. You can send traffic until you clog one of the two pipes,
> but will never cause spill to the other link.

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Joel Jaeggli                                   joelja () darkwing uoregon edu
Academic User Services                       consult () gladstone uoregon edu
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