There are 3 sites A,B,C. Site A aggregration device will be configured with ospf & connected
to 2 isp uplinks.Site A needs to access servers in DC which is located off C.Even internet site for A
goes thru B.A has a default tunnel running to B.B is then used to link A with the servers off C.
All devices in B are running on static as of now.C has devices running ospf.
A to B & B to C are connected thru ISP links.
1)My query is would it work the way it is working now, if i enable ospf only for local segments in Site A
& not end to end from A to C.( Note C is already running ospf).2)Would the isp have to do anything if
i intend to run ospf end to end.
Would this cause any disruption in flow.
Thanks in advance!