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CCNP Tutorial




  • The first link-state routing protocol was implemented and deployed in the ARPANET (Advanced Research Project Agency Network), the predecessor to later link-state routing protocols.
  • Next, DEC (Digital Equipment Corporation) proposed and designed a link-state routing protocol for ISO’s OSI networks, IS-IS (Intermediate System-to-Intermediate System).
    • Later, IS-IS was extended by the IETF to carry IP routing information.
  • IETF working group designed a routing protocol specifically for IP routing, OSPF (Open Shortest Path First).
  • OSPF version 2, current version, RFC 2328, John Moy
  • Uses the Dijkstra algorithm to calculate a SPT (Shortest Path Tree)


Use Full Link for CCNP Certification-

1. CCNP Tutorial
2. CCNP Certification (300-206) Exam Practice Test
3. CCNP Certification (300-207) Exam Practice Test
4. CCNP Certification (300-208) Exam Practice Test
5. CCNP Online Training

Use Full Link for CCNA Certification-

1. CCNA Tutorial
2. CCNA Certification (200-120) Practice Test
3. CCNA Quiz
4. CCNA Interview Questions
5. CCNA Practical Video Tutorial
6. CCNA Online Training

Use Full Link for CCIE Certification-

1. CCIE Certification (350-018)Exam Practice Test
2. CCIE Certification (350-021)Exam Practice Test
3. CCIE Certification (350-022)Exam Practice Test
4. CCIE Certification (350-024) Exam Practice Test

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