OSPF default metric

[Ondrej Zajicek]

On Wed, Aug 10, 2022 at 01:40:17PM +0200, Marcus Büttemeyer wrote:
> Hello again,
> I'm wondering how OSPF default metrics are calculated by BIRD?
> Background: I'm running 4 Linux VMs with BIRD under Hyper-V and BIRD gives
> me a metric of 10 for every connection, be it 10G (which seems to be the
> default for vSwitches on Hyper-V), 1G or wireless.

Hello

In BIRD, default metric is always 10. It is assumed to be manualy
set by operator. Speed based default is just behavior of some other
implementations, not standard-prescribed behavior.

> Even though the physical
> speed is passed from the hypervisor to the VMs. At least "cat
> /sys/class/net/INT/speed" gives the proper value.
> If I knew where the metric comes from, I could try to fix that on the
> OS-level and save myself separate cost definitions for every interface.

-- 
Elen sila lumenn' omentielvo

Ondrej 'Santiago' Zajicek (email: santiago at crfreenet.org)
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"To err is human -- to blame it on a computer is even more so."