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TOPIC: regarding igmp protocol

regarding igmp protocol 11 years 4 months ago #23522

hai all,
i am wating eagerly to get the reply for the query
Can any one give me the basic concept of IGMP protocol ?
if any one is aware of the above feature please do reply?

multicast is a group of message that is used to send the information to a group of hosts which is in a network

to handle such type of messages router uses the protocol named as igmp

in the ip address range we have a range of which is reserved for the useage of handling the multicast group .

class D address is used for this purpose
in the class D address range there are some more addressess which is reserved for the multicast purpose

class D address have the range which starts from -

this represents a group of hosts in a network

some addressess are reserved for some purposes

ie - all systems on this subnet - all routers on this subnet - ospf routers - ospf designated routers - DHCP Server/ relay agent

apart from that

globally scoped addressess are -
they are used to send multicast data between organisations and across the internet

limited scoped addressess -

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