Connected, Local or Remote Route?

About this interactive

The lesson's three destinations, on a Cisco IOS router: - **Connected (C):** give an interface an address and mask and bring it up, and the whole network it is on goes into the table. A host on that network is reached straight out of the interface. - **Local (L):** the router's own address on that interface, as a /32 host route. It matches traffic for the router itself, such as an SSH session or a ping to the router. The 0120 demo calls it a link-local address; it is a local route, and link-local addresses are something else. - **Remote:** a network that is not on any of the router's interfaces, reached through a next-hop router. It may be entered by hand or learned, for example through OSPF. In the cards, R1's G0/0 is 10.240.0.2/24 and its G0/1 is 10.240.2.2/24.

What you'll learn

Sort a routing-table entry as a directly connected network (C), a local route for the router's own address (L) or a remote network
Decide which kind of entry a packet matches: one for a host on an attached network, one for the router itself, or one for a network beyond another router

Aligned to

Cisco CCNA

3.1 Interpret the components of routing table

CompTIA Network+

2.1 Explain characteristics of routing technologies.

Cisco CCST Networking

4.4 Explain basic routing concepts

Key terms

Directly Connected Route: A routing table entry automatically created when an interface is configured and active, representing a network physically attached to the router.
Local Interface Route: A host route (typically /32) automatically added to the routing table representing the exact IP address assigned to a router's own interface, marked with the code 'L'.
Host Route: A route that specifies a single specific host, identified by a /32 prefix in IPv4 or /128 in IPv6, rather than an entire network.
Next Hop: The IP address of the immediately adjacent router that a packet is forwarded to on the way toward its final destination. A router's routing table entry for each network destination includes the next-hop address so the router knows where to send the packet.
Routing Table: A database stored in a router that lists known network destinations, the metric (cost) to reach them, and the next-hop address or outgoing interface to forward packets toward those destinations. Routers consult this table for every packet they forward.

Topics

Routing Table Connected Route Local Route Remote Network Interactive Categorize

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