router & functionality
TRANSCRIPT
Router And it’s functionality
Name – Mohd AmjadCSB
Roll Number 120101138
•It is a Specialized computer that connect two or more than two networks
Network 1
Network 2
Router
Internetworking with a Router
IEEE 802.3Sub-network IEEE 802.5
Sub-network
PC-NFSSub-network
Router
• Router having a software that allows the router to move the data from one network to another network.
• Hardware software.• Routes the packet fastly in comparison of software
router.
• It generate a table to route the packet for it self and that table is called routing table.
• With the help of that table it transfer the data packet from one network to another network.
Router: Network Layer
Router Operate At the 3rd Layer of OSI Model that is Network Layer.
• Several companies that makes the router that are :
Types of Routing
• Routing is a way in which the best path find out by the router to transfer the data packet from one network to another and keep that path in the routing table.
• Static (Default)• Dynamic
Static Routing
• Routing table updating is manual.• Static routing is good for small network
infrastructure.• Flexibility is not there.• Admin interfere is high.
Dynamic Routing
• Routing table updating is Automatic • Dynamic routing is good for mid to large
network infrastructure.(more than 5 or more than 5).
• Flexibility is there.• Admin interfere is low.
Router Act as a DHCP
• Dynamic host configuration protocol.
IP AddressIP Address
IP Address
IP Address
• This IP address configuration can be done by two ways.
• Manual• Dynamic or Automatic.
• DHCP allocate IP address to the network host.• So that they can communicate on an IP
network.• It makes Admin work easy.• DHCP is not a Computer. • Router act as a DHCP.
IP AddressIP Address
IP Address
Router as a Default Gateway
Routing Algorithm
• The Goal of a routing algorithm is to create and maintain a routing table, which is the current list of the best ways to reach any other networks or devices reachable by that device.
• Routing algorithm is a dynamic Approach.
• Set of all optimal routes from: Source to a given destination
These are the algorithms we have for Routing
• Shortest Path Routing• Distance Vector Routing• Link State Routing• Hierarchical Routing• Broadcast Routing• Multicast Routing• Routing for Mobile Hosts• Routing in Ad Hoc Networks
There are certain properties that each algorithm have:
1. Correctness2. Simplicity3. Robustness4. Stability5. Fairness6. Optimality