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Link state routing must be disabled whenever two or more routing groups are configured to send or receive mail from an Exchange 2007 computer that has the Hub Transport server role installed. (The Hub Transport server was formerly known as a bridgehead server). This is because Exchange 2007 uses Active Directory to determine routing topology. The Exchange 2007 servers do not propagate link state updates. If link state routing is enabled and there is more than one routing group configured to send mail to or from an Exchange 2007 Hub Transport server, routing loops might occur.
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Is OSPF link state or distance vector or path vector protocol?
OSPF is a link-state routing protocol.
What two names refer to the same algorithm used by all link-state routing protocols?
Link-state routing algorithms, also known as shortest path first (SPF) algorithms.
How do you enable ip routing to yes?
On a Cisco router, the command to enable IP routing (for IPv4) is:ip routingTo disable it:no ip routingOn a Cisco router, the command to enable IP routing (for IPv4) is:ip routingTo disable it:no ip routingOn a Cisco router, the command to enable IP routing (for IPv4) is:ip routingTo disable it:no ip routingOn a Cisco router, the command to enable IP routing (for IPv4) is:ip routingTo disable it:no ip routing
Is OSPF a classful or classless link-state routing protocol?
OSPF is a classless link-state routing protocol. RIP version 1 and IGRP are both classful distance vector routing protocols, EIGRP is a hybrid protocol that supports classless addressing.
Why do link-state protocols converge faster than most distance vector protocols?
Distance vector protocols compute their routing tables before sending routing updates; link-state protocols do not.
What type of routing protocol advertises only new paths to other routers on the network?
link-state routing protocol
What is associated with link-state routing protocols?
shotrest path first calculation
Which is classified as a link-state routing protocol?
There are actually two OSPF and IS-IS
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.
How are LSAs used to manage updates to the routing topology in a link state protocol environment?
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).
Why is it difficult for routing loops to occur in networks that use link-state routing?
Each router builds a complete and synchronized view of the network.
What is one fundamental difference between distance vector routing protocols and link state routing protocols?
Distance vector protocols exchange their routing tables, and add a metric to each route. Link-state routing protols exchange topology information, then calculate the routes. As a result, there are the following fundamental differences:The information that is exchanged - routing table vs. topology information.Link-state protocols know the topology of the network (or an area); distance vector routing protocols don't.When the best route is calculated: in distance-vector routing protocols, a metric is added while the route is propagated from router to router. In link-state protocols, the best route is calculated separately by each router, only after having complete topology information.
