[aodvv2-discuss] Re: Metrics (removing references to alternate metric types)
- From: John Dowdell <john.dowdell486@xxxxxxxxx>
- To: AODVv2 Discuss <aodvv2-discuss@xxxxxxxxxxxxx>
- Date: Sun, 27 Sep 2015 22:31:16 +0100
Charlie
On 24 Sep 2015, at 21:48, Charlie Perkins <charles.perkins@xxxxxxxxxxxxx>
wrote:
Hello John,
Follow-up below...
Bandwidth is not a cost metric. The calculation of LoopFree() might be more
complicated. I don't like non-cost metrics for various reasons. One reason
is that they contradict the entire mathematical formulation for metrics and
metric spaces. On the other hand, some people in the IETF don't have
much respect for mathematics, it seems, and I get tired of complaining about
it.
Regards,
Charlie P.
Bandwidth is a metric (along with latency, both of which are declared as
metrics in DLEP). You can use it to influence routing decisions, but I’ll
agree that it doesn’t work to completely drive a route selection in the way
that hop count does. I believe it is also impossible to calculate LoopFree()
just using bandwidth, so maybe you’d have to use a combination of hop count and
bandwidth, but that is a discussion for another draft.
Regards
John
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