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How are LSAs used to manage updates to the routing topology in a link state protocol environment?
Wiki User
∙ 12y ago
- Link-state advertisements (LSAs) -- A link-state advertisement (LSA) is a small packet of routing information that is sent between routers.
- Topological database -- A topological database is a collection of information gathered from LSAs.
- SPF algorithm (Dijkstra algorithm) -- The shortest path first (SPF) algorithm is a calculation performed on the database resulting in the SPF tree.
- Routing tables -- A list of the known paths and interfaces.
Link State Routing Protocols converge more quickly and they are less prone to routing loops than Distance Vector algorithms. On the other hand, Link State Routing Protocols require more CPU power and memory than distance vector algorithms. Link State Protocols use a hierarchical structure that limits the distance that a Link-State Advertisement (LSA) need to travel. Link State Protocols use multicasts to share the routing information. Only the routers which run Link State protocol only process the updates. Link State routers send updates only when there is a change in the state of the network (incremental updates).
Wiki User
∙ 12y ago
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What is dynamically as related to a routing protocol?
Dynamically, as related to a routing protocol is a type of networking technique whereby the routing protocol creates, updates and maintains the dynamic routing table.
What is a characteristic of the EIGRP routing protocol?
it is a cisco propriatary routing protocol.
What routing protocol updates routing tables about every 30 seconds resulting in overloaded network traffic?
RIPv1
What is the default update period in seconds for the RIP routing protocol?
Every 20 Milliseconds it updates.
Which routing protocol excludes the subnet information from routing updates?
RIP VERSIONV1 can be seen to exclude subnet information from routing updates, this is because ripv1 is a classful routing protocol and does not support VSLM, this was corrected in RIPv2 where ripv2 does send out subnet mask's in the form of a prefix eg /24 which is the subnet mask of 255.255.255.0 or a class c address.
What are the characteristics of a distance vector routing protocol?
Two Characteristics: RIP is an example of distance vector routing protocols. Updates are periodic and include the entire routing table
Which feature of RIPv2 enables it to function as a classless routing protocol?
RIPv2 sends subnetmasks in the routing table updates. RIPv1 does not, which causes it be class-full.
Which type of routing protocol does not send subnet mask information in the routing updates A. Linkful B. Stateful C. Classful D. Classless Which one is it?
Classful.
What is the difference between Link state routing and distance vector routing through examples?
In a distance vector routing protocol, such as RIP or EIGRP, each router sends its routing table to neighboring routers. The routers don't know the topology, i.e., how other routers are interconnected. In a link state routing protocol, such as OSPF or IS-IS, routers first exchange information about connections within the network (or an area of the network), and build a topology table. Then each router uses Dijkstra's algorithm to calculate the best route to each destination.
What is RIP listener?
RIP listener waits for route updates sent by routers that use the routing information protocol in a corporate LAN.
Will a router that is configured with a classless routing protocol determine the subnet mask that should be assigned to routes that are learned from neighboring classless routers?
A router running a classless routing protocol (Such as OSPF) will send the subnet mask in its route updates to its neighboring routers.
Which two statements are true regarding the function of the RIPv1 routing updates?
1) It is a distance vector routing protocol. 2) The data portion of a RIP message is encapsulated into a UDP segment.
