OSPF vs Fabric Connect

[NE77]

Dear all,

I'm currently learning the Avaya Fabric Connect. The below quote make me confuse.

Fabric Connect extends the functionality of SPB to include full Layer 3 routing functionality as well
as enhanced IP multicast services. With a single protocol, Fabric Connect replaces:
•    STP.
•    The Layer 3 interior gateway protocol (IGP), such as Open Shortest Path First (OSPF).
•    Multicast services, such as Protocol-Independent Multicast (PIM).
•    Layer 2 and Layer 3 virtualization services, such as MPLS.

But when I configure the ISIS, i'm still using OSPf for the L3 routing. my question is what is the difference between OSPF and fabric connect.

[Sja]

ISIS can be use as OSPF on Avaya
 
YouTube
Setting Up IP Short Cuts over Fabric Connect

[cielo]

They are trying to highlight that, in case you are planning to use IP Shortcuts add-on to SPB, you don't need to configure another dynamic routing protocol except the already deployed ISIS as it's already running for SPB's control plane and it can be used to announce also the L3 subnets from the network