Chapter 5: The Network Layer: Control Plane Flashcards
What’s the goal of a routing protocol?
Determine good paths from sending hosts to receiving hosts, through a network of routers
Give the definition:
Sequence of routers packets traverse from given initial host to final destination host
Path
What’s a “good” path for a routing protocol?
Least-cost
Give the definition:
A routing algorithm that computes the least-cost path between a source and destination using complete, global knowledge about the network
Centralized routing algorithm
Give the definition:
A routing algorithm that calculates the least-cost path in an iterative, distributed manner with the routers
Decentralized routing algorithm
Give the definition:
A routing algorithm that must be aware of the cost of each link in the network
Link-State (LS) algorithm
Give the definition:
A routing algorithm where each node maintains a vector of estimates of the costs (distances) to all other nodes in the network
Distance-Vector (DV) algorithm
Give the definition:
A routing algorithm where routes change slowly over time
Static routing algorithm
Give the definition:
A routing algorithm where the routing paths are changed as the network traffic load / topology change
Dynamic routing algorithm
The Internet Control Message Protocol (ICMP) is used by hosts and routers to communicate what sort of information?
Network-level
Which network layer in relation to IP are the ICMP messages at?
The network layer above IP
Describe the format of the ICMP message
type + code + first 8 bytes of IP datagram causing error
Give the definition:
Management that includes the deployment, integration, and coordination of the hardware, software, and human elements to monitor, test, poll, configure, analyze, evaluate, and control the network and element resources to meet the real-time, operational performance, and Quality of Service requirements at a reasonable cost
Network management
