ROUTER

• It is device to communicate between two different networks.

ROUTING

• It is process of sending the data packets through the best path to reach the destination.

DEFAULT GATEWAY

• It gives exit point (or) entry point to reach the destination.

Types of Routing:-
1. Static Routing

• Routes should be added manually on the router by the administrator.

2. Dynamic Routing

• Routes will be added automatically by the router with the help of routing protocols

Types of Routers:-
1. Software Router

• It is a computer which performs routing task as one of its multiple tasks.

2. Hardware Router

• It is Dedicated HARDWARE DEVICE which works only as a router.

Router and Remote Access Service (RRAS):-

• Routing and Remote Access is a service that performs routing as one of its multiple processes.

NAT:-

• Provides access to internet from a protected private address range.

• Translates Private IP’s to public IP’s & vice-versa for outgoing and incoming traffic

• Hide private IP address range from the internet

• Can be used with DHCP or can be configured to assign IP to Client

How NAT works:-

DHCP Relay Agents:-

• A DHCP Relay agent is a computer or router that listens for DHCP Broadcasts from DHCP client and then relay(sends) those messages to DHCP Server on the another network.

How a DHCP Relay Agent Works? :-