Skip to main content

IGMP

 

WHAT IS IGMP

IGMP STANDS FOR INTERNET GROUP MANAGEMENT PROTOCOL. IT IS A NETWORK LAYER PROTOCOL THAT ALLOWS HOSTS AND ROUTERS TO COMMUNICATE ABOUT MULTICAST GROUPS ON AN IP NETWORK. MULTICAST GROUPS ALLOW A SINGLE SOURCE TO SEND DATA TO MULTIPLE DESTINATIONS, WHICH CAN BE USEFUL FOR APPLICATIONS SUCH AS VIDEO STREAMING AND ONLINE GAMING.

IGMP WORKS BY SENDING MESSAGES BETWEEN HOSTS AND ROUTERS. WHEN A HOST WANTS TO JOIN A MULTICAST GROUP, IT SENDS AN IGMP JOIN MESSAGE TO THE ROUTER. THE ROUTER THEN ADDS THE HOST TO THE MULTICAST GROUP AND STARTS FORWARDING MULTICAST TRAFFIC TO THE HOST. WHEN A HOST LEAVES A MULTICAST GROUP, IT SENDS AN IGMP LEAVE MESSAGE TO THE ROUTER. THE ROUTER THEN REMOVES THE HOST FROM THE MULTICAST GROUP AND STOPS FORWARDING MULTICAST TRAFFIC TO THE HOST.

IGMP IS AN IMPORTANT PART OF MULTICAST NETWORKING. IT ALLOWS HOSTS AND ROUTERS TO COMMUNICATE ABOUT MULTICAST GROUPS AND ENSURES THAT MULTICAST TRAFFIC IS ONLY FORWARDED TO HOSTS THAT HAVE JOINED THE GROUP.

 BENEFITS OF USING IGMP:

EFFICIENCY: 

IGMP ALLOWS MULTICAST TRAFFIC TO BE EFFICIENTLY DELIVERED TO HOSTS THAT HAVE JOINED THE GROUP. THIS CAN SAVE BANDWIDTH AND IMPROVE PERFORMANCE.

SCALABILITY: 

IGMP CAN BE USED TO SUPPORT LARGE MULTICAST GROUPS. THIS IS BECAUSE IGMP MESSAGES ARE ONLY SENT BETWEEN HOSTS AND ROUTERS, AND NOT BETWEEN ALL HOSTS IN THE GROUP.

SECURITY: 

IGMP CAN BE USED TO PREVENT UNAUTHORIZED HOSTS FROM JOINING MULTICAST GROUPS. THIS IS BECAUSE HOSTS MUST SEND IGMP JOIN MESSAGES TO THE ROUTER BEFORE THEY CAN JOIN A MULTICAST GROUP.

IF YOU ARE USING MULTICAST NETWORKING, THEN YOU SHOULD USE IGMP TO MANAGE YOUR MULTICAST GROUPS. IGMP WILL HELP YOU TO ENSURE THAT MULTICAST TRAFFIC IS EFFICIENTLY DELIVERED TO THE HOSTS THAT HAVE JOINED THE GROUP, AND THAT UNAUTHORIZED HOSTS CANNOT JOIN THE GROUP.

 TYPES OF IGMP MESSAGES:

GENERAL MEMBERSHIP QUERY:

THIS MESSAGE IS SENT BY A ROUTER TO DETERMINE WHICH HOSTS HAVE JOINED A MULTICAST GROUP.

GROUP-SPECIFIC MEMBERSHIP QUERY: 

THIS MESSAGE IS SENT BY A ROUTER TO A SPECIFIC MULTICAST GROUP TO DETERMINE WHICH HOSTS HAVE JOINED THE GROUP.

GROUP AND SOURCE-SPECIFIC QUERY:

 THIS MESSAGE IS SENT BY A ROUTER TO A SPECIFIC MULTICAST GROUP AND SOURCE TO DETERMINE WHICH HOSTS HAVE JOINED THE GROUP AND ARE INTERESTED IN RECEIVING DATA FROM THE SOURCE.

MEMBERSHIP REPORT:

THIS MESSAGE IS SENT BY A HOST TO A ROUTER TO INFORM THE ROUTER THAT THE HOST HAS JOINED A MULTICAST GROUP.

LEAVE GROUP:

THIS MESSAGE IS SENT BY A HOST TO A ROUTER TO INFORM THE ROUTER THAT THE HOST HAS LEFT A MULTICAST GROUP.

IGMP IS A STANDARD PROTOCOL THAT IS SUPPORTED BY MOST ROUTERS AND OPERATING SYSTEMS. IF YOU ARE USING MULTICAST NETWORKING, THEN YOU SHOULD MAKE SURE THAT YOUR ROUTER AND OPERATING SYSTEM SUPPORT IGMP.

_____________

Comments

Post a Comment

Popular posts from this blog

TCP/IP MODEL

  HISTORY OF TCP/IP MODEL THE TCP/IP MODEL WAS DEVELOPED BY VINT CERF AND BOB KAHN IN THE 1970S. THEY WERE BOTH WORKING AT THE DEFENSE ADVANCED RESEARCH PROJECTS AGENCY (DARPA) AT THE TIME. Vint Cerf And Bob Kahn CERF AND KAHN WERE TASKED WITH DEVELOPING A NEW NETWORK PROTOCOL THAT WOULD BE MORE RELIABLE AND EFFICIENT THAN THE EXISTING PROTOCOLS. THEY CAME UP WITH THE IDEA OF USING A LAYERED APPROACH, WHICH WOULD ALLOW EACH LAYER TO FOCUS ON A SPECIFIC TASK. THIS LED TO THE DEVELOPMENT OF THE TCP/IP MODEL, WHICH IS STILL THE BASIS FOR HOW DATA IS TRANSMITTED OVER THE INTERNET TODAY. CERF AND KAHN ARE OFTEN REFERRED TO AS THE "FATHERS OF THE INTERNET" FOR THEIR WORK ON THE TCP/IP MODEL. THEY WERE INDUCTED INTO THE NATIONAL INVENTORS HALL OF FAME IN 2004 FOR THEIR CONTRIBUTIONS TO THE DEVELOPMENT OF THE INTERNET. HERE ARE SOME OTHER NOTABLE PEOPLE WHO CONTRIBUTED TO THE DEVELOPMENT OF THE TCP/IP MODEL: JON POSTEL: POSTEL WAS THE FIRST CHAIRMAN OF THE INTERNET ENGINEERI...
Post a Comment
Read more

About Me Information

HELLO FRIENDS, I HOPE YOU ALL ARE DOING WELL. I AM MAKING THIS BLOG FOR THE INFORMATION OF NETWORKING ABOUT. IN THIS BLOG WE WILL READ CCNA (200-301) AND ITS RELATED AND NETWORK RELATED INFORMATION. MY NAME IS ABDUL MANAN JAVED MANJ MY AGE IS 21 YEAR    I AM STUDED ABOUT NETWORK  TECHNOLOGY EMAIL ID : mananrajpoot449@gmail.com CONTACT NO : +923486777628 ADDRESS : ISLAMABAD,G7,KHADA MARKET My Website   My Facebook Account My Facebook Page My Linkedin Profile _____________________________ CONTENT ABOUT  HIS BLOGG 1.  Computer Network 2.   What Is Internet 3.   Network Architecture 4.  Osi Refrence Model 5.  Operating System 6.  Internet Protocol (Ip) 7.  Internet Protocol Types 8.   Port Number 9.  Mac-Address 10.    WHAT IS HUB 11.   WHAT IS SWITCH 12.   WHAT IS ROUTER 13.   WHAT IS NETWORK 14.   NETWORK CABLES 15.   ROUTING 16.  Data Transmission 17...
Post a Comment
Read more

Internet Protocol (IP) Address

  IP ADDRESS IT IS A UNIQUE ADDRESS THAT WE CAN ASSIGN TO DEVICE .SO THAT DEVICECAN COMMUNICATE WITH EACH OTHER. WE CANNAOT ASSIGN SAME IP ADDRESS IN ANY TWO DEVICES IN OUR NETWORK. IF WE WILL DO THIS THEN IT WILL BE  CAUSE A CONFLICT ERROR. TWO VERSION OF IP ADDRESS: 1: IPV4 ; 2: IPV6 ; IPV4 32 BITS AND IPV6 128 BITS. AN IP ADDRESS, OR INTERNET PROTOCOL ADDRESS, IS A SERIES OF NUMBERS THAT IDENTIFIES ANY DEVICE ON A NETWORK.  COMPUTERS USE IP ADDRESSES TO COMMUNICATE WITH EACH OTHER BOTH OVER THE INTERNET AS WELL AS ON OTHER NETWORKS. TO FIND THE IP ADDRESS CLASS WE NEED TO LOOK AT THE FIRST DIGIT OF THE IP ADDRESS. AND BY LOOKING AT THE FIRST DIGIT, WE CAN GUESS THE SUBNET MASK TO WHICH CLASS IT BELONGS. CLASS A IP ADDRESS SUBNET MASK 255.0.0.0 CLASS B IP ADDRESS SUBNET MASK  255.255.0.0  CLASS C IP ADDRESS SUBNET MASK 255.255.255.0 IANA TABLE IP RANGES                 IANA   ( Internet Assigned Numbers Au...
Post a Comment
Read more