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When a router does not have an interface for the destination network it sends the traffic to where?
Wiki User
∙ 12y ago
If a router has a route in its routing table, it will have a next hop IP address and / or outbound interface. If a router does not have a route in its routing table the packet will be dropped.
Wiki User
∙ 12y ago
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What layer of OSI model does a router operate?
Router is a Layer 3 (Network Layer)device that checks packet's IP Address at input interface & routes them to interface connected to destination network if available.
What is a hop in a network?
A "hop" has to do with network routing. If you are on a particular IP network, for example 192.168.1.0, and you need to get to 192.168.4.0, data must travel through a router. A router provides interfaces to join at least two distinct networks. If your data travels through only one router to get to a different network, that network is considered to be one "hop" away. Data moving through additional networks to get to the destination network increase the hop count by one for each router. Thus, in the above example, if the first router had an interface attached to the 192.168.1.0 network, and another interface attached to 192.168.2.0; and then if the next router had an interface on 192.168.2.0 and one on 192.168.3.0; and then if the next router had an interface on 192.168.3.0 and one on 192.168.4.0; then the data would travel through --one, two, three-- routers to get to the destination network. In this case, network 192.168.4.0 would be three hops away from 192.168.1.0.
In an Internet Protocol Version 4 environments IPv4 what information is used by the router to forward data packets from one interface of a router to another?
destination network address
In an IPv4 environment what information is used by the router to forward data packets from one interface of a router to another?
It uses the MAC address, Media Access Control. Every packet sent from a computer contains its MAC address. The router stores this in its routing table. When it receives a packet with a destiation address of that MAC address, then it forwards it to that computer. This is called NAT, Network Address Translation. It uses the Destination IP address
When forwarding a route which route will router select?
First, routing is the process a router performs when making forwarding decisions for each packet arriving at the gateway interface. To forward a packet to a destination network, the router requires a route to that network. If a route to a destination network does not exist on the router, the packet will be forwarded to the default gateway. Now, the destination network can be a number of routers or hops away from the default gateway. If the router has an entry for the network in its routing table, it would only indicate the next-hop router to which the packet is to be forwarded to and not the exact route to the final router. To sum it up, the routing process uses a routing table to map the destination address to the next hop and then forwards the packet to the next-hop address.
What are the minimum elements that you should find in a routing table?
A list of destination networks known by the router & the reachable interface for the route that goes to each network.
What is work to router?
Electronic messages sent between computer networks are stored in the router, while it determines all of the possible paths to the destination address. The router then chooses the most expedient route, based on its investigations into the traffic load, distance, number of network points that the packet has to pass through, and cost algorythms between computer networks, before forwarding the packet to the final destination. Router hardware is a physical device which connects the local area network to the wide area network, it is responsible for routing network traffic from source to destination. These routers run on layer routing protocols and operate on network layer information.
When forwarding a packet which route will the packet select?
First, routing is the process a router performs when making forwarding decisions for each packet arriving at the gateway interface. To forward a packet to a destination network, the router requires a route to that network. If a route to a destination network does not exist on the router, the packet will be forwarded to the default gateway. Now, the destination network can be a number of routers or hops away from the default gateway. If the router has an entry for the network in its routing table, it would only indicate the next-hop router to which the packet is to be forwarded to and not the exact route to the final router. To sum it up, the routing process uses a routing table to map the destination address to the next hop and then forwards the packet to the next-hop address.
What information does the next hop entry in a routing table identify?
The first router in the path to the destination network. The next hop router is the first (or next) router in the path to the destination network. Each router looks at the destination network in the packet, then consults the routing table to identify the next hop router to the destination network. The hop count identifies the numbers of routers in the path to the destination network. A default gateway router is a router that is used for packets used to external networks. Most routers do not have a default gateway setting, but instead use a default route setting which identifies the next hop router for all unknown networks.
What are the 4 category of network components?
Network interface card Router Modem Swich
How can you check to see if a fastEthernet interface on a router is connected to the fastEthernet interface on another network device?
Check the network card and the properties are listed there.
What is the effect of a router on delimiting broadcast traffic and conserving bandwidth?
Generally speaking, routers will unicast-forward incoming packets which have a network broadcast address as destination, unless they are directly connected to that network/subnet and therefore know that the destination address is a broadcast address
