Mission 024

Engineer Briefing

In Mission 023, you were introduced to dynamic routing.

You learned that routers can exchange information automatically using routing protocols.

One of the most important enterprise routing protocols is:

OSPF

Open Shortest Path First

In small networks, static routes may be enough.

Example:

PC

 |

Router

 |

Server

Only a few routes exist.

However, enterprise networks are much larger.

Example:

                 Headquarters

                    Router A

                 /     |     \

                /      |      \

          Router B  Router C  Router D

              |        |         |

           Branch   Servers   Users

A network engineer needs a routing protocol that can:

• Automatically discover networks.
• Detect neighboring routers.