OSPF is a classless routing protocol, which means that in its updates, it includes the subnet of each route it knows about, thus, enabling variable-length subnet masks. With variable-length subnet masks, an IP network can be broken into many subnets of various sizes.
In respect to this, what are two features of the OSPF routing protocol?
(Choose two.)
- automatically summarizes networks at the classful boundaries.
- has an administrative distance of 100.
- calculates its metric using bandwidth.
- uses Dijkstra's algorithm to build the SPF tree.
- used primarily as an EGP.
Furthermore, what are three characteristics of the 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.
- Speeds up convergence.
- Periodic broadcasts to propagate the routes.
Furthermore, what are features of OSPF?
OSPF Characteristics
- Provides routing information to the IP section of the TCP/IP protocol suite, the most commonly used alternative to RIP.
- Sends updates to tables only, instead of entire tables, to routers.
- Is a more economical routing protocol than RIP over time because it involves less network traffic.
What is OSPF routing protocol?
The OSPF (Open Shortest Path First) protocol is one of a family of IP Routing protocols, and is an Interior Gateway Protocol (IGP) for the Internet, used to distribute IP routing information throughout a single Autonomous System (AS) in an IP network.
Related Question Answers
What is the purpose of a dynamic routing protocol?
The purpose of dynamic routing protocols includes: Discovery of remote networks. Maintaining up-to-date routing information. Choosing the best path to destination networks.Which routing protocol uses the concept of area?
Routing Information Protocol (RIP)RIP is used in both Local Area Networks (LANs) and Wide Area Networks (WANs), and also runs on the Application layer of the OSI model. There are multiple versions of RIP including RIPv1 and RIPv2.
What are two functions of dynamic routing protocols choose two group of answer choices?
What are two functions of dynamic routing protocols? (Choose two.) Dynamic routing protocols exist to discover the network, maintain routing tables, and calculate the best path.Which OSPF data structure is identical?
Explanation: Regardless of which OSPF area a router resides in, the adjacency database, routing table, and forwarding database are unique for each router. The link-state database lists information about all other routers within an area and is identical across all OSPF routers participating in that area.What data is used by OSPF and ISIS for loop prevention?
1 Routing Protocol Overview Link-state protocols like OSPF and ISIS use more CPU and memory resources than distance vector protocols do because they maintain a complete synchronized map of the network and run the SPF algorithm to determine the best path.What is the primary purpose of Nat?
A. Basically, NAT allows a single device, such as a router, to act as an agent between the Internet (or public network) and a local network (or private network), which means that only a single unique IP address is required to represent an entire group of computers to anything outside their network.Which two are Classful distance vector routing protocols?
RIPv1 and IGRP are classful protocols. These two are classful protocols as they do not include subnet mask information. RIPv2, OSPF, EIGRP, and IS-IS are all types of class routing protocols which has subnet mask information within updates.Which two routing protocols are classified as link state protocols choose two group of answer choices?
Link-state routing protocols include OSPF and IS-IS. Distance vector routing protocols include RIPv2 and EIGRP. The path vector routing protocol is BGP, an exterior gateway protocol (EGP).What layer is OSPF?
OSI layer designationIS-IS runs on the data link layer (Layer 2) Open Shortest Path First (OSPF) is encapsulated in IP, but runs only on the IPv4 subnet, while the IPv6 version runs on the link using only link-local addressing. IGRP, and EIGRP are directly encapsulated in IP.
Is OSPF Classful or classless?
Classful routing protocols do not carry subnet masks; classless routing protocols do. Older routing protocols, including RIP and IGRP, are classful. Newer protocols, including RIP-2, EIGRP, and OSPF, are classless.What are the benefits of OSPF protocol?
OSPF supports/provides/advantages –- Both IPv4 and IPv6 routed protocols.
- Load balancing with equal cost routes for same destination.
- VLSM and route summarization.
- Unlimited hop counts.
- Trigger updates for fast convergence.
- A loop free topology using SPF algorithm.
- Run on most routers.
- Classless protocol.
Does OSPF use TCP or UDP?
Because OSPF does not use UDP or TCP, the OSPF protocol is fairly elaborate and must reproduce many of the features of a transport protocol to move OSPF messages between routers.What are OSPF areas?
An OSPF network can be divided into sub-domains called areas. An area is a logical collection of OSPF networks, routers, and links that have the same area identification. A router within an area must maintain a topological database for the area to which it belongs.Is OSPF still used?
OSPF is one choice for a routing protocol, but it is an industry standard, and just about every business-grade router supports it. It is also very well understood by most network engineers, and fairly simple to configure.What algorithm does OSPF use?
OSPF was designed as an interior gateway protocol (IGP), for use in an autonomous system such as a local area network (LAN). It implements Dijkstra's algorithm, also known as the shortest path first (SPF) algorithm.What is router OSPF 1?
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.How does OSPF work in networking?
OSPF is a routing protocol. Two routers speaking OSPF to each other exchange information about the routes they know about and the cost for them to get there. OSPF routers rely on cost to compute the shortest path through the network between themselves and a remote router or network destination.Why OSPF routing protocol dominate as the interior gateway protocol?
Another reason OSPF still dominates is because OSPF is a layer 3 protocol, while IS-IS is a layer 2 protocol. This means that OSPF information is exchanged using data packets that can be routed, while IS-IS is not. Data packets from layer 3 protocols can traverse routers.What is the function of the OSPF LSR packet?
The Link State Request (LSR) packet is an OSPF packet Type 3. After DBD packets exchange process, the router may find it does not have an up-to-date database. The LSR packet is used to request pieces of neighbor database that is more up-to-date.Which parameter or parameters are used to calculate OSPF cost in Cisco routers?
By default, the cost of an interface is calculated based on the bandwidth; you can force the cost of an interface with the ip ospf cost interface subconfiguration mode command.What is identical on all OSPF routers within a single area?
Regardless of which OSPF area a router resides in, the adjacency database, routing table, and forwarding database are unique for each router. The link-state database lists information about all other routers within an area and is identical across all OSPF routers participating in that area.What is the difference between OSPFv2 and OSPFv3?
OSPFv2 stands for Open Shortest Path First version 2 and OSPFv3 stands for Open Shortest Path First version 3. OSPFv2 is the IPv4's OSPF version, whereas OSPFv3 is the IPv6's OSPF version. In OSPFv2, many OSPF instances per interface are not supported, whereas in OSPFv3, many OSPF instances per interface are supported.Which three requirements are necessary for two OSPFv2 routers to form an adjacency choose three?
The two routers must include the inter-router link network in an OSPFv2 network command.*- The two routers must include the inter-router link network in an OSPFv2 network command.*
- The OSPFv2 process is enabled on the interface by entering the ospf process area-id command.
Which three addresses could be used as the destination address for OSPFv3 messages choose three?
Which three addresses could be used as the destination address for OSPFv3 messages? (Choose three.) OSPFv6 messages can be sent to either the OSPF router multicast FF02::5, the OSPF DR/BDR multicast FF02::6, or the link-local address. 6.Which type of address is used to send traffic to a group of devices?
In contrast, a multicast address is used to address a specific group of devices, and a unicast address is used to address a single device. For network layer communications, a broadcast address may be a specific IP address. At the data link layer on Ethernet networks, it is a specific MAC address.What network uses one common infrastructure to carry voice?
converged networkHow do I use OSPF routing?
To enable OSPF on a Cisco router and advertise interfaces, the following tasks are required:- Use the command router ospf process ID to start OSPF.
- Use the network command to enable the interfaces.
- Identify area assignments.
- (Optional) Assign the router ID.
