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What portion of the IP packet does a router use to make forwarding decisions?
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∙ 12y ago
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∙ 12y ago
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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.
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.
Which part of an ip packet does the router use to make routing decisions?
the network portion of the destination ip address
What decisions do routers make as a packet enters an interface?
It determines which local IP on a given Router Table, be it DHCP or static, that packet is assigned to.
What is packet forwarding?
Packet forwarding in simple terms is the forwarding of packets from one node to another from networking point of view. For example, a router or a switch. These networking devices make routing devices with the help of their routing tables and then select an outgoing interface. After that they make some changes in the packet header and push (forward) the packet to the selected interface. In case you don't know the meaning of packet. Packer is the smallest unit of size in networking. Different networks has different packet size. For example, in ATM Networks the packet size is of 53 Bytes.
Which network device makes forwarding decisions based on the destination MAC address that is contained in the frame?
Switches and Bridges
Which portion of the packet does a router use to forward the packet to the destination?
The Destination Address (Layer 2 or Layer 3)
Which table does a router use to make decisions about the interface through which a data packet is to be sent?
Routing table
Which device makes traffic forwarding decisions based on mac address?
A switch uses MAC address to forward frames while a router uses IP addresses.
What address is used to send packets that are destined for an outside network?
Router uses IP address of destination node to do the direct packet switching..while bridge & switch uses the MAC address to packet forwarding.
If a router receives a packet that is does not know how to forward what type of route must be configured on the router to prevent the router from dropping it?
Answering "If a router recieves a packet that is does not know how to foward what type of route must be configured on the router to prevent the router from dropping it?"
When the destination network is not listed in the routing table of a cisco router what are two possible options the router might take?
The router discards the packet. The router forwards the packet via the default route
