Why Do Ospf Serial Interfaces Usually Require Manual Bandwidth Configuration?

Why do OSPF serial interfaces usually require manual bandwidth configuration?

1. The value of the bandwidth has a huge impact on the link actual speed.
2. It can use the bandwidth value because it can help in the evaluation of the routes for the routing table.
3.  All of the OSPF serial interfaces have the default value which is 1.544Mb/s.
4. The serial link must be configured with a unique value.

Answer: The correct answer is option 2. The OSPF uses the bandwidth value because it can help in the evaluation of the routes for the routing table.

For the activation of the OSPF network, first, you need to activate the protocol on more than one interface on the devices in the network where the traffic flow occurs. The configuration of the interface depends on the interface connection with the broadcast or point-to-point network etc.

• The work of the broadcast interface is to act as the routing device that has a connection with the LAN.
• The point-to-point interface gives the connection between the single source and the destination.
• The point-to-multipoint interface gives the connection between a single source and multiple destinations or outputs.
• NBMA interface work is the same as the point-to-multipoint except maybe you need to configure the NBMA because of the interoperation with other equipment’s.
• The demanding circuit is a connection type that helps in the limitation of the traffic on the base of a user agreement.

The configuration of the interface can also be done to be passive or to work in passive traffic engineering mode or the peer interface.

• Passive interface work is to advertise the address bit it can not run the OSPF protocol.
• The interface which is working with the passive traffic engineering mode floods the link address information along with the autonomous system (AS).
• The peer interface configuration is done with OSPFv2 routing devices.it is needed for the generalized MPLS(GMPLS) to transfer the data with the help of traffic engineering information with the help separate link from the control center.