Quick Answer: What Does Variably Subnetted Mean?

What are two functions of a router?


We know that routers implement layer 3 or network layer functions.

Their main job is to forward packets based upon a routing table.

When doing so, they also provide traffic segmentation, multiple broadcast domains, and define network layer addressing subnets and networks..

What is Isis networking?

Intermediate System to Intermediate System (IS-IS, also written ISIS) is a routing protocol designed to move information efficiently within a computer network, a group of physically connected computers or similar devices. It accomplishes this by determining the best route for data through a Packet switching network.

What does R mean in a routing table?

O: Identifies that the route was learned dynamically from another router using the OSPF routing protocol. R: Identifies that the route was learned dynamically from another router using the RIP routing protocol.

What is the difference between local and connected routes?

A connected route is one that is assigned directly to an interface. A local route is one that is one that is not known by a protocol. But since static routes are considered a ‘protocol’, that only happens in the case of secondary addresses on the interfaces.

What happens when a router receives a packet with a TTL of 0?

What happens when a router receives a packet with a TTL of 0? The router drops the packet and sends an ICMP TTL expired message back to the host. … The hosts will still send and receive traffic, but traffic may not always reach the correct destination.

What is ip route metric?

A metric is a value that is assigned to an IP route for a particular network interface that identifies the cost that is associated with using that route. … The Automatic Metric feature can be useful when the routing table contains multiple routes for the same destination.

What is L in IP route?

Like IPv4, a ‘C’ next to a route indicates that this is a directly connected network. An ‘L’ indicates the local route. In an IPv6 network, the local route has a /128 prefix. Local routes are used by the routing table to efficiently process packets with a destination address of the interface of the router.

What is ip route command in Cisco?

IP route command is used to configure the static route. Static routes are the most secure way of routing. They will also increase overall network performance. These features are extremely helpful in small network.

How do routers route?

A router is connected to two or more data lines from different IP networks. When a data packet comes in on one of the lines, the router reads the network address information in the packet header to determine the ultimate destination.

Which three are types of routes found in a routing table?

There are 3 types of routing:Static routing – Static routing is a process in which we have to manually add routes in routing table.Default Routing – This is the method where the router is configured to send all packets towards a single router (next hop). … Dynamic Routing –

How do I find my IP route?

Use the show ip route EXEC command to display the current state of the routing table.

What is a local route?

The local routes define a route for the one specific IP address configured on the router interface. Each local route has a /32 prefix length, defining a host route, which defines a route just for that one IP. address. For example, the last local route, for, defines a route that matches only the IP.

How do I clear ip route?

To clear the routing table of all routes, you do clear ip route. To clear it of just one routes, issue the command clear ip route x.x.x.x (where x.x.x.x is the network you want to clear).

Do you show ip interface brief?

The show ip interface brief command can be used to view a summary of the router interfaces. This command displays the IP address, interface status, and additional information.

Do show ip route connected?

First, here’s the entire routing table of R2, outputted from the show ip route command. Next, here’s the output from using the show ip route connected command, which filters the output to just the directly connected routes in the routing table.

What is connected route?

Connected routes Subnets directly connected to a router’s interface are added to the router’s routing table. … A router will be able to route all packets destined for all hosts in subnets directly connected to its active interfaces. Consider the following example. The router has two active interfaces, Fa0/0 and Fa0/1.

How do I find my route?

Windows has a command-line tool for view the routing table. It is called “route.” To view the routing table (this is universal on all recent Windows versions) open a command prompt. The easiest way to do that is to go to Start->Run and type in “cmd” then click “OK.”