Interacting with Other Routing Protocols

OSPF interacts seamlessly with the following routing protocols:

IS-IS—OSPF was developed originally from an early version of the IS-IS intradomain routing protocol. OSPF can import IS-IS routing information. See Configuring IS-IS .
RIP—E-series routers can simultaneously run OSPF and RIP. When doing so, OSPF routes are preferred over RIP. In general, use of the OSPF protocol is preferred because of its robustness, responsiveness, and decreased bandwidth requirements. See Configuring RIP .
BGP—The default expectation is that your routing environment is an AS running OSPF and exchanging BGP routes with other ASs. See JUNOSe BGP and MPLS Configuration Guide.