nanog mailing list archives

Re: OSPF Costs Formula that include delay.


From: Owen DeLong <owen () delong com>
Date: Fri, 24 Jan 2014 12:59:19 -0800


On Jan 24, 2014, at 12:41 PM, Raymond Burkholder <ray () oneunified net> wrote:


Some networks I have worked with took the average latency of each link and
assigned that (with some constant multiple) as the interface cost.

Of course this all fails miserably if you are using anything like MPLS
underneath your OSPF.


But then when using MPLS underneath, then MPLS Traffic Engineering can be
used to do some interesting path computations and resiliency configurations.

I wasn’t attempting to promote or discourage use of MPLS. I was merely endeavoring to point out that in an MPLS world, 
OSPF costs are not how you want to manage your traffic.

Owen



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