Which one of the following pairs of documents defines the Open Shortest Path First version 2 (OSPF v2) routing protocol and OSPF for Internet Protocol version 6 (IPv6), respectively?
A. 2178 and 2740
B. 1058 and 2178
C. 2328 and 2740
D. 2328 and 1878
||Answer C is correct. RFC 2328 defines OSPF version 2 and 2740 defines OSPF for IPv6. Answer A is incorrect because RFC 2178 is an obsolete RFC for OSPF that was replaced by 2328. Answer B is incorrect because 1058 defines RIP and 2178 is obsolete. Answer D is incorrect because 1878 defines VLSM for IPv4.|
Which of the following phrases best describes the OSPF exchange state?