9.

Question 1

What do routers care about?

Answer 1

Routers only care about networks and the best path to each one.

It’s the hardware address of the host that’s used to deliver the packet once the correct network has been reached

Question 2

What is a routing protocol?

Answer 2

A routing protocol is used to find all networks within an internetwork and ensure all routers have the same routing table.

Examples include:
- RIP (Router Information Protocol)
- RIPv2
- EIGRP (Enhanced Internal Gateway Routing Protocol)
- OSPF (Open Shortest Path First)

Question 3

What is a routed protocol?

Answer 3

Once all routers know about all networks, a routed protocol can be used to send user data (packets) through the established network.
Routed protocols are assigned to interfaces and determine the method of packet delivery

Examples include:
- IP
- IPv6

Question 4

What are the minimum factors a router must know to be able to effectively route packets?

Answer 4

1. Destination address
2. Neighbour routers from which it can learn about remote networks
3. Possible routes to all remote networks
4. The best route to each remote network
5. How to maintain and verify routing information