What are the steps to configure OSPF?

Configuring OSPF in a Single Area

Step 1 Use the command router ospf process ID to start OSPF.
Step 2 Use the network command to enable the interfaces.
Step 3 Identify area assignments.
Step 4 (Optional) Assign the router ID.

Which two commands are used to configure a basic OSPF configuration?

A number of different Cisco IOS OSPF configuration commands are available, but at its most basic, OSPF configuration uses three commands: the router ospf, network, and router-id commands. The router ospf process-id command is the beginning of any Cisco IOS OSPF configuration.

What is OSPF configuration?

Open Shortest Path First (OSPF) is a routing protocol for Internet Protocol (IP) networks. It uses a link state routing (LSR) algorithm and falls into the group of interior gateway protocols (IGPs), operating within a single autonomous system (AS). It is defined as OSPF Version 2 in RFC 2328 (1998) for IPv4.

What is simple OSPF?

OSPF is a routing protocol. Each OSPF router passes along information about the routes and costs they’ve heard about to all of their adjacent OSPF routers, called neighbors. OSPF routers rely on cost to compute the shortest path through the network between themselves and a remote router or network destination.

What is OSPF CCNA?

OSPF stands for Open Shortest Path First. Definition: OSPF is a routing protocol used to determine the best route for delivering the packets within an IP networks. OSPF sends link-state advertisements (LSAs) to all other routers within the same area.

What OSPF 1?

All routers are in OSPF Area 0. I need to use the router ospf command to get into the OSPF configuration. The number “1” is a process ID and you can choose any number you like. It doesn’t matter and if you want you can use a different number on each router.

What is Area 0 in an OSPF implementation?

backbone area
The backbone area (Area 0) is the core of an OSPF network. All other areas are connected to it and all traffic between areas must traverse it. All routing between areas is distributed through the backbone area.

Which metric is used by OSPF?

Open Shortest Path First (OSPF) uses “Cost” as the value of metric and uses a Reference Bandwidth of 100 Mbps for cost calculation.

How many tables are in OSPF?

The OSPF process builds and maintains three separate tables: • A neighbor table – contains a list of all neighboring routers. A topology table – contains a list of all possible routes to all known networks within an area. A routing table – contains the best route for each known network.

What is the main function of OSPF?

OSPF is a fast-converging,link-state IGP used by millions.

  • OSPF forms adjacencies with neighbors and shares information via the DR and BDR using Link State Advertisements.
  • Areas in OSPF are used to limit LSAs and summarize routes. Everyone connects to area zero,the backbone.

    • What is the advantage of a “area” in OSPF configuration?

    The advantages of an “area” in OSPF configuration are: smaller routing table (no summarization by default): fewer routing table entries as network addresses can be summarized between areas. smaller link-state database (LSDB): fewer routers exchanging LSAs, minimizes processing and memory requirements.

    What is the OSPF interface priority?

    Through the use of device interface priority within OSPF, you can influence which device becomes the OSPF DR or BDR. The priority values range from 0-255 with 0 meaning the device would not participate in the election process. Default priority values are 1.