What is OSPF over Frame Relay?

What is OSPF over Frame Relay?

OSPF uses multicast by default, which is also considered by the router to be of the broadcast variety. If frame-relay by default cannot send broadcasts and OSPF by default needs them to work (hellos, etc) then we need to change something! Enter the OSPF non-broadcast network type.

Is frame relay point-to-multipoint?

Frame Relay is a Layer 2 WAN protocol that cand be configured on physical serial links. In addition to physical interfaces, you can also configure two types of logical interfaces for Frame Relay – point-to-point and multipoint.

What is multipoint OSPF point?

The point-to-multipoint mode of operation allows us to then configure selected routers with neighbor / cost commands, identifying a specific cost for the connection to the specified peer.

Does OSPF support point-to-multipoint?

OSPF can operate in one of two modes across a non-broadcast network: non-broadcast multi-access (NBMA) or point-to-multipoint. Each of these topologies tackles the absence of broadcast capability from a different direction.

What are the OSPF network types?

There are 5 OSPF network types:

  • Non-Broadcast.
  • Broadcast.
  • Point-to-Multipoint.
  • Point-to-Multipoint Non-Broadcast.
  • Point-to-Point.

Which statement is correct about Multiarea OSPF?

Which statement is correct about multiarea OSPF? Arranging routers into areas partitions a large autonomous system in order to lighten the load on routers. OSPF features Classless OSPFv2 is classless by design; therefore, it supports IPv4 VLSM and CIDR.

What is a frame relay router?

Frame relay is a packet-switching telecommunications service designed for cost-efficient data transmission for intermittent traffic between local area networks (LANs) and between endpoints in wide area networks (WANs).

What is OSPF multi access network?

A multi-access network is a segment where we have more than two routers. OSPF figures this out by looking at the interface type. For example, an Ethernet interface is considered a multi-access network, and a serial interface is considered a point-to-point interface.

What is multi access network in OSPF?

Which three features are of OSPF routing protocol?

OSPF bases link cost on bandwidth to determine the best route. OSPF is a distance vector type of protocol. OSPF uses DUAL algorithm for route computation. OSPF updates are event triggered.

Which of the following is not an advantage of a Multiarea OSPF?

Which of the following is NOT an advantage of the hierarchical-topology possibilities of multiarea OSPF? False. Multiarea OSPF localizes the impact of a topology change within an area, stopping LSA flooding at the area boundry. In Multiarea OSPF, topology changes within an area still propagate across the area boundary.

What are advantages of frame relay?

The benefits of frame relay include the following:

  • Efficient. It does not perform error correction, which consumes time and network resources.
  • Cost-effective. It’s cheaper than dedicated lines and less hardware is required.
  • Flexible. It uses a data link connection identifier (DLCI) number.
  • Low latency.

Which protocol is used by frame relay?

Frame relay direct network: Allows data that uses SNA or TCP/IP communications over a frame-relay network to move at speeds of up to 2.048 Mbps. This support allows a network of systems to communicate using the frame-relay network as a backbone, without the need for multiple leased T1 lines.

What is the purpose of frame relay?

Frame relay is a protocol that defines how frames are routed through a fast-packet network based on the address field in the frame. Frame relay takes advantage of the reliability of data communications networks to minimize the error checking done by the network nodes.

What is frame relay and how it works?

Frame relay is a packet-switching telecommunications service designed for cost-efficient data transmission for intermittent traffic between local area networks (LANs) and between endpoints in wide area networks (WANs). The service was once widely available and implemented.

What multicast addresses are used by OSPF?

The IPv4 multicast addresses used for OSPF are 224.0. 0.5 to send information to all OSPF routers and 224.0. 0.6 to send information to DR/BDR routers. The IPv6 multicast addresses are FF02::5 for all OSPFv3 routers and FF02::6 for all DR/BDR routers.

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