[j-nsp] Best practice for igp/bgp metrics

Luis Balbinot luis at luisbalbinot.com
Wed Oct 25 15:41:06 EDT 2017


Never underestimate your reference-bandwidth!

We recently set all our routers to 1000g (1 Tbps) and it was not a
trivial task. And now I feel like I'm going to regret that in a couple
years. Even if you work with smaller circuits, having larger numbers
will give you more range to play around.

Luis

On Tue, Oct 24, 2017 at 8:50 AM, Alexander Dube <nsp at layerwerks.net> wrote:
> Hello,
>
> we're redesigning our backbone with multiple datacenters and pops currently and looking for a best practice or a recommendation for configuring the metrics.
> What we have for now is a full meshed backbone with underlaying isis. IBGP exports routes without any metric. LSP are in loose mode and are using isis metric for path calculation.
>
> Do you have a recommendation for metrics/te ( isis and bgp ) to have some values like path lengh ( kilometers ), bandwidth, maybe latency, etc inside of path calculation?
>
> Kind regards
> Alex
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