Domain 2.2 Flashcards
What are some features of dynamic routing protocols
- Listen for subnet information from other routers ( router 2 router)
- Provide subnet information to other routers
- Determine the best path for traffic
- When network changes occur, they update the available routes
(different for each protocol)
Describe distance-vector routing protocols
Information is passed router 2 router
-includes how many hops away another network is.
The deciding “vector” is the distance (hops) between routers.
Usually automatic, and good for smaller networks.
- Does not scale well for large networks
What are two Distance Vector Protocols
RIP (Routing Information Protocol)
EIGRP ( Enhanced Interior Gateway Routing Protocol)
Describe link-state routing protocols
Information between routers is related to the current connectivity.
If the link is up and traversable, and how fast is the link
Very Scalable - Used most often in large networks.
What is an example of a link-state routing protocol
OSPF - Open Shortest Path First
IS-IS
Intermediate system to intermediate system
What are hybrid routing protocols
They are a mix of link-state and distance-vector protocols
They will evaluate both distance and link speed.
Give an example of a hybrid routing protocol
BGP (Border Gateway Protocol)
- Determines route based on paths, network policies, and configured rule sets
What is a routing table
List of directories for packets
-Table with many routes to a destination
- Packets stop at every router to ask for directions
There are routing tables in routers, workstations, and other devices.
what could occur if there is no default route set and there is an issue with the next hop
The router could get stuck in a hop loop, the data will go in the wrong direction;
What is a default route?
A route set by an administrator that a router will use as an absolute last resort.
The destination of 0.0.0.0 \24 directs the router to send data out anywhere it can.
Default routes simplify the routing process and integrate with all the other routing protocols.
How can a device or admin determine what the best or most reliable route?
Routing Metrics
Each protocol has its own way of determining routing metrics.
The lowest metric between redundant links will be selected.
Metric values are not universally useful, they will typically benefit protocols that are in the same class.
(link-state > link-state)
(link-state X Distance Vector)
What is used to determine which routing protocol has priority when there are two different protocols with two different paths?
Administrative Distance -
When there are two protocols that have metrics that can’t be compared, you will compare the administrative distance.
Lower the distance the better
What is used to determine which routing protocol has priority when there are two different protocols with two different paths?
Administrative Distance -
When there are two protocols that have metrics that can’t be compared, you will compare the administrative distance.
Lower the distance the better
True or False, different data types have different requirements
True,
-Voice is Real-Time low latency
-Recorded streaming video has a buffer
-Databases use interactive sessions
What is traffic shaping?
Used to managed QOS for switch, Routers, FWs, and other QOS devices
Used to provide high priority applications greater bandwidth.
