[c-nsp] [External] ospf auto-cost reference-bandwidth on modern gigabit networks

[Hunter Fuller]

We set it to "auto-cost reference-bandwidth 1000000" everywhere.
Should take care of us for a while...

--
Hunter Fuller (they)
Router Jockey
VBH Annex B-5
+1 256 824 5331

Office of Information Technology
The University of Alabama in Huntsville
Network Engineering

On Wed, Apr 29, 2020 at 10:07 AM Mike <mike+lists at yourtownonline.com> wrote:
>
> Hello,
>
>      Is there a recommended 'modern default' for ip ospf auto-cost
> reference-bandwidth, to account for the fact that modern networks have
> 1g and faster interfaces?
>
>     My core equipment all has 10G and 1G interfaces today, and it seems
> to me that if I set the reference-bandwidth to 100gbps, Im not losing
> anything, but gaining a useful distinction between the modern
> 1g,10g,40g,and 100g interfaces of today. I understand the necessity of
> setting this on all routers in the network, however, I do have some
> older equipment (cisco 7201) doing T1 aggregation that also has 1g
> interfaces with nothing higher, so I am wondering the practicality of
> maybe just skipping this default change on that and like gear? These
> devices are at the edge and further only have single uplink connections
> to the core so it would seem safe to not worry about this here.
>
>
> Thank you.
>
>
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