2.1 Static Routing Flashcards
N10-009 Obj. 2.1 Explain characteristics of routing technologies (7 cards)
What is the primary function of a router in a network?
A router forwards traffic between IP subnets by examining destination IP addresses and using its routing table to determine the next hop.
Transcript: “The first step is to identify what the destination IP… and makes a note of where it should be sending this traffic.” (0:23–0:36)
What does a router do if the destination IP is not in its routing table?
It discards the packet, as there’s no known router to forward it.
Transcript: “If a router refers to its table and does not find a next hop… it will simply discard that traffic.” (1:37–1:45)
What is static routing?
Static routing is when an administrator manually defines routing paths in the router’s configuration.
Transcript: “This administrative creation of a routing table is referred to as static routing…” (3:28–3:36)
What are some advantages of static routing?
It’s simple, uses no CPU or memory overhead, and provides security with no dynamic updates.
Transcript: “Because we’re static routing… no CPU cycles… relatively secure form of routing.” (3:58–4:38)
In what scenario is static routing commonly used?
In smaller or remote networks with a single path in and out, kow as stub networks.
More secure–no routing protocols to analyze
Transcript: “Very common for remote locations… all communication takes place over that single connection… stub networks.” (4:17–4:29)
What are the downsides of static routing in larger environments?
It’s time-consuming, error-prone, doesn’t adapt to network changes, and can’t reroute automatically.
Transcript: “This can be challenging to configure on larger networks… no automatic rerouting…” (4:41–5:34)
How do you configure a static route on a router?
By specifying the destination network and the IP address of the next hop router.
Transcript: “We might tell router 1 that if it receives any packet… send that particular packet to 10.10.40.2.” (6:01–6:16)
