We have to configure a catalyst 4507 in a new building. This Catalyst will have a 10Gb link to another building (another Catalyst 4500). This link will be configured as trunk.
But, we have to configure a wifi backup link in case the optical fiber stops working. We will configure the wifi bridges in order to transmit all VLANs. But, how can we make sure that, in normal conditions, all traffic goes through the trunk link using the optical fiber (10gb) and not through the trunk link using the wifi bridge?
Our solution is based on STP:
We should make sure that the Catalyst of the old building is the Root Bridge. Afterwards, we should increase the port priority of the port using the wifi link in that Root Bridge, so the new Catalyst will block the port connected to the wifi bridge. We think this should be enough, shouldn't it?
Or, no configuration should be needed since the wifi will be connected to a GigabitEthernet and the optical fiber to a 10GibabitEthernet interface? I mean, the 10 GigabitEthernet will have a lower cost. That is, the STP default configuration should be enough. Isn't this right?
What would you recommend?
Thanks in advance!!