About Grubhub. Grubhub helps you find and order food from wherever you are. How it works: you type in an address, we tell you the restaurants that deliver to that locale as well as showing you droves of pickup restaurants near you. Want to be more specific? Search by cuisine, restaurant name or menu item.
The main purpose of a router is to connect multiple networks and forward packets destined either for its own networks or other networks. A router is considered a Layer 3 device because its primary forwarding decision is based on the information in the Layer 3 IP packet, specifically the destination IP address.
A router has a lot more capabilities than other network devices such as a hub or a switch which are only able to perform basic network functions. For example, a hub is often used to transfer data between computers or network devices, but does not analyze or do anything with the data it is transferring.ore router= A core router is a router in a computer network that routes data within a network but not between networks. Edge router= An edge Router is a router in a computer network that routes data between one or more networks. Virtual router= A Virtual Router is a backup router used in a VRRP setup.