I'm using the document High Availability Campus Network Design Routed Access Layer Using EIGRP or OSPF (http://www.cisco.com/en/US/docs/solutions/Enterprise/Campus/routed-ex.html)
to design a new building to an existing network (3 buildings).
In this document the Distribuion Switch is the ABR. Today there are a lot of routers in my Area 0 (another buildings) and I didn't wanna to increase the area 0 without necessity.
Can I use the Core Switch to do the ABR role or I always have to use the
Distribution Switch as a ABR
Thanks in Advanced