[Beowulf] Timeout on eth0 when booting disk less

Christopher Samuel samuel at unimelb.edu.au
Sun Mar 12 19:11:34 PDT 2017

On 12/03/17 22:19, John Hanks wrote:

> Do you have "spanning-tree portfast" enabled on your switch ports? The
> syntax will depend on switch vendor, but the principal is the same. When
> the nic comes up there can be a significant delay while STP decides
> whether to pass packets or not, which can wreak havoc on things that
> expect the network to Just Work(tm). portfast tells the switch to assume
> a client, not another switch is on the port.

+1 for this, this  feature should be enabled on all switch ports that go
straight to compute nodes where STP is not required.

 Christopher Samuel        Senior Systems Administrator
 Melbourne Bioinformatics - The University of Melbourne
 Email: samuel at unimelb.edu.au Phone: +61 (0)3 903 55545

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