Bridge Networking In Computer Network & Types of Bridge Networking in Computer Network

 What is Bridge in  Computer Networking ? 

What is Bridge in Networking ? - Types of Bridge in Networking


A Bridge is a device that allows you to segment a large network into two smaller, more efficient networks. If you are adding to an older wiring scheme and want the new network to be up-to-date, a Bridges in Networking , can connect the two. 

A bridge monitors the information traffic on both sides of the network so that it can pass packets of information to the correct location.


 Most Bridges  can "listen" to the network and automatically figure out the address of each computer on both sides of the bridge in networking . 

The bridge can inspect each message and, if necessary broadcast it on the other side of the network. 

The Bridge in Networking manages the traffic to maintain optimum performance on both sides of the network. 

You might say that the bridge is like a traffic cop at a busy intersection during rush hour. It keeps information flowing on both sides of the network, but it does not allow unnecessary traffic through.


 How working  Bridge in Networking :-


Bridge in Networking  operate at Layer 2, the data link layer, of the OSI reference model and are not required to examine upper-layer information. 

 Therefore, a bridge eliminates unnecessary traffic and minimizes the chances of collisions occurring on a network by dividing it into segments and Titering traffic based on the station or MAC address. 


Bridges filter network traffic by only looking at the MAC address. Therefore, they they can rapidly forward traffic representing any network-layer protocol. 

Because bridges only took at MAC addresses, they are not concerned with protocols. Consequently, bridges are only concerned with passing packets, or not passing packets, based on their destination MAC addresses. 


The following are the important properties of Bridges in Networking :


1.They are more intelligent than hubs-that is, they can analyze incoming packets and forward (or drop) them based on addressing information.

2.They collect and pass packets between two network segments.

3.They control broadcasts to the network.

4.They maintain address tables.


Imagine that Mr. Avijit has 30 students in her homeroom class. He knows which clubs each of his students belongs to because his homeroom seating chart includes this information next to each student's name. 

Every Monday morning a list of club announcements is delivered to each homeroom teacher, so it can be read to students. This Monday, Mr. Avijit  notices that the only announcement is for members of the high school marching band.

 He checks members his seating of chat the list band and sees that none of the students in his homeroom is the Therefore, Mr. Avijit does not read the announcement, about the band to his homeroom students.


In this analogy, Mr Avijit is like a bridge because He is filtering messages and deciding what will be forwarded to his students based on information regarding their club membership.

 In this example, club memberships shown next to each student's name on Mr. Avijit seating chart are like the destination MAC addresses used by bridges.

In order to filter or selectively deliver network traffic, bridges build tables of all MAC addresses located on a network and other networks and maps them.


If data comes along the networking media, a bridge compares the destination MAC address carried by the data to MAC addresses contained in its tables. 

If the bridge in networking determines that the destination MAC address of the data is from the same network segment as the source, as shown in  it does not forward the data to other segments of the network.

 If the bridge in networking determines that the destination MAC address of the data is not from the same network segment as the source, as shown in  it forwards the data to all other segments of the network. 

 Therefore, bridge in networking can significantly reduce the amount of traffic between network segments by eliminating unnecessary traffic.


TYPES OF BRIDGES IN NETWORKING   :- 


Transparent Basic Bridge: 


A clear primary bridge in networking  is the best kind of bridge and it stays “transparent” or invisible to the opposite gadgets on the community. 

This kind of bridge in networking can briefly retailer knowledge earlier than it could possibly ahead it to the following community. 

However solely serves the fundamental function of blocking or forwarding knowledge primarily based on MAC deal with and no conversion of visitors is carried out.


· Source Routing Bridge: 


This kind of bridge in networking deduces the route a packet ought to take by the community by looking for data embedded by the supply of the visitors. 

 It does so by on the lookout for a particular knowledge discipline within the packet, the routing data discipline (RIF). 

If it fails to get that data, it transmits an “explorer” packet which collects details about the IDs of the bridges and the networks because it travels by the community and sequential map of the community is distributed again to the transmitting system. 

An SRT bridge makes use of such data to find out the trail of the information packets on the community.


· Source Routing Transparent Bridge:


 This kind of bridge in networking is a hybrid of clear and supply bridges in networking . 

Such bridges are able to transmitting knowledge packets no matter whether or not or not the supply routing data is on the market. 


we find another two types of bridges. 


Remote Bridge :


Remote Bridge in networking connects community segments at totally different locations, utilizing WAN hyperlink reminiscent of MODEM or Leased line.

 The distinction in velocity between Local and huge space hyperlinks, a distant Bridge makes use of inside buffer to retailer the information acquired from LAN whereas it's ready for transmission to the distant website.


Local Bridge :


A Local Bridge in networking offers packet filtering and repeating companies for the community segments of the identical kind. that is additionally referred to as MAC-layer Bridge. 

This is the only kind of Bridge as a result of it has no want for packet filtering or buffering. This Bridge merely propagates the incoming packets to the suitable ports or discard them.


Advantages of Bridges in Networking :

1. Bridges are easy and vital.

2. They stop pointless visitors from crossing onto different community segments.

3. Bridge can cut back the quantity of community visitors on segments.

4. It additionally make it doable to isolate a busy community from not-so-busy community.

5. They can join totally different community architectures like Ethernet & Token ring.

6. Bridge have means to have a look at the bodily vacation spot deal with of the body and ship the body on the particular port.

7. Bridge can filter the visitors, it will increase throughput on a community.



Disadvantages of Bridges in Networking:

1. Bridges are slower than Hubs & Repeaters, as a result of they look at every body's supply and vacation spot addresses.

2. Bridges haven't any safety in opposition to broadcast storms. that's, when a pc must ship data to all different computer systems on the networks, it sends a Broadcast body. 

Bridges don't have the power to cease Bridge in networking broadcast packets from being forwarded. 

When a Bridge receives a body with a Broadcast vacation spot deal with  the Bridge will merely ahead the body out each certainly one of its ports.

3. A Bridge in networking can't make choices about routes via the community.



Functions of Bridge in Networking :-

  • The predominant features of bridges in a pc community embrace the next.
  • This networking gadget is used for dividing native space networks into a number of segments.
  • In the OSI mannequin, it really works underneath the info hyperlink layer.
  • It is used to retailer the handle of MAC in PC utilized in a community and in addition used for diminishing the community site visitors.


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Bridge Networking In Computer Network & Types of Bridge Networking in Computer Network  Bridge  Networking  In Computer Network  & Types of Bridge Networking in Computer Network Reviewed by Abhijit Das on October 21, 2020 Rating: 5

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