Force Cluster Communication to a Bridge

Hello,

we have two NIC's at our Server (vmbr0 and vmbr1). The vmbr0 are for external Traffic and the vmbr1 for the internal Traffic.

So what i have see is that the Cluster Communicate over the external Net - how can i force this to the internal?

I can't changed this, because we use the DRAC with the Shared Option and have two VLAN's in the Datacenter.

Thanks!

Kind regards