Such as topic, when the IGMP polling host received a message, the host is the need to reply through application polling or message system polling will their reply message

CodePudding user response:

The IGMP protocol is IP multicast in use on the network of the host on the router at the end of the signaling mechanism, is divided into two functional parts: host side and router side, IGMP working mechanism are described below:
1. The recipient host report to the sharing network group membership,
2. In the same network segment can all make the IGMP elects a function of the multicast router as a query, the query is periodically group membership query message to the Shared network segments,
3. The recipient host receives the query message response to report after the group membership,
4. Multicast router in the network segment on the basis of the response received to refresh the existence of group membership information, if no response, overtime multicast router is considered in the network segment without the group by group members, to cancel the corresponding multicast data forwarding,
5. All participants in the multicast transmission receiver IGMP protocol, the host must be applied host can at any time, any place, the total number of members is not restricted to join or quit the multicast group,
6. Support multicast routers do not need nor can save all the host of the membership, it is only through the IGMP protocol understand each interface connected on a network segment of whether there is the receiver of a multicast group, the group members, and all the host needs to save his only joined what multicast group,


Network underlying protocol has always been a system maintenance, program just tell the system what to send to the address data, as well as to monitor the data port or address

CodePudding user response:

reference 1st floor KFRGHT response:

IGMP protocol is IP multicast in use on the network of the host on the router at the end of the signaling mechanism, is divided into two functional parts: host side and router side, IGMP working mechanism are described below:
1. The recipient host report to the sharing network group membership,
2. In the same network segment can all make the IGMP elects a function of the multicast router as a query, the query is periodically group membership query message to the Shared network segments,
3. The recipient host receives the query message response to report after the group membership,
4. Multicast router in the network segment on the basis of the response received to refresh the existence of group membership information, if no response, overtime multicast router is considered in the network segment without the group by group members, to cancel the corresponding multicast data forwarding,
5. All participants in the multicast transmission receiver IGMP protocol, the host must be applied host can at any time, any place, the total number of members is not restricted to join or quit the multicast group,
6. Support multicast routers do not need nor can save all the host of the membership, it is only through the IGMP protocol understand each interface connected on a network segment of whether there is the receiver of a multicast group, the group members, and all the host needs to save his only joined what multicast groups, application need only at boot time sends a group of IGMP message is ok?


Network underlying protocol has always been the system maintenance, program just tell the system what to send to the address data, as well as to monitor the port or address data

that is to say, the router in the IGMP polling, IGMP polling my applications do not need to respond, restoring the IGMP request is automatically completed?

CodePudding user response:

reference 1st floor KFRGHT response:

IGMP protocol is IP multicast in use on the network of the host on the router at the end of the signaling mechanism, is divided into two functional parts: host side and router side, IGMP working mechanism are described below:
1. The recipient host report to the sharing network group membership,
2. In the same network segment can all make the IGMP elects a function of the multicast router as a query, the query is periodically group membership query message to the Shared network segments,
3. The recipient host receives the query message response to report after the group membership,
4. Multicast router in the network segment on the basis of the response received to refresh the existence of group membership information, if no response, overtime multicast router is considered in the network segment without the group by group members, to cancel the corresponding multicast data forwarding,
5. All participants in the multicast transmission receiver IGMP protocol, the host must be applied host can at any time, any place, the total number of members is not restricted to join or quit the multicast group,
6. Support multicast routers do not need nor can save all the host of the membership, it is only through the IGMP protocol understand each interface connected on a network segment of whether there is the receiver of a multicast group, the group members, and all the host needs to save his only joined what multicast group,


Network underlying protocol has always been the system maintenance, program just tell the system what to send to the address data, as well as to monitor the port or address data

application just at the beginning of the IGMP packets sent plus group is ok?