Static routing Lecture Flashcards
(18 cards)
What is the main function of a router?
The main function of a router is to find the best path to a destination device.
How can paths be configured on routers?
Paths on routers can be manually and automatically configured.
What is static routing?
Manual path configuration is called static routing.
What does static routing configuration require?
Static routing configuration needs to take care of every step of the path. Basically, you are telling the router where to forward the packet thoroughly.
What is a routing table?
A routing table is essential to understand how static routing works.
What does a router use to forward packets?
A router forwards packets based on its IP routing table.
How does a router obtain routes?
To implement route-based packet forwarding, the router needs to obtain routes.
What are direct routes?
Direct routes are automatically generated by devices and point to local directly connected networks.
What are static routes?
Static routes are manually configured by network administrators.
What are dynamic routes?
Dynamic routes are learned by dynamic routing protocols running on routers.
What happens if an incoming packet’s destination IP address is not in the routing table?
The router drops the packet.
What information does a route contain?
Destination: identifies a destination subnet.
Mask: identifies a subnet together with a destination IP address.
Outbound interface: indicates the interface through which a data packet is sent out of the local router.
Next hop: indicates the next-hop address used by the router to forward the data packet to the destination subnet.
How are directly connected networks usually configured?
Directly connected networks are usually configured by specifying the interface of the router.
What is a recursive routing?
Recursive routing is a recursive search process of the IP routing table where the next-hop IP address is wanted to route packets towards its destination, but when found, it is not part of any directly connected network.
What is summary routing?
Step 1: Write two network addresses.
Step 2: Transfer the last not similar part of the address to binary.
Step 3: Convert similar binary numbers to decimal as those supposed to be all binary 1s.
Step 4: Your subnet mask will be ________________
Step 5: Your IP address will be the number that ____________
What is a default route or route of the last resort?
R1(config)#ip route 0.0.0.0 0.0.0.0 g0/0
What is floating static routing?
Floating static routing is the routing when a backup route should be configured.
How are IP floating static routes configured?
IP floating static routes are configured by using the distance argument to specify an administrative distance. If no administrative distance is configured, the default value (1) is used.
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