Hi Joerg,

On 19/03/15 19:01, Joerg Hanebuth wrote:

Hi Hector,

thnx for reply.

I know  that managed layer 2 switches have a lot of abilities ;)

And that’s my apprehension – that he figured out something

that is blocking clean drbd-sync.

Switching this drbd over an unmanaged,

stupid gigabit-switch works well.

But at the moment we plug it in his 100mbit managed switch

drbd get out of sync and fails.

I have the suspicion he will parade me and block something needed for drbd.

Layer 2 Switches can't block ports,

but have the abilities to block broad-, uni- or multicast.

So anyone out there who can answer my question?

Needs drbd any form of casting like

broad-, uni- or multicast to stay in sync?

I don't think DRBD uses any of that. It just needs to talk to the one IP on the other node, that's it.

Have you checked VLAN config, Jumbo packet settings on switches and servers?

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Zuzendari Teknikoa / Director Técnico
Binovo IT Human Project, S.L.
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