Tuesday, July 30, 2013

ROUTING


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? :-

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