Communication control unit and communication control method applied for multi-cast supporting LAN
AssigneeFujitsu Limited
InventorNaofumi Kobayashi
Life of this patent
Estimating the term…
Abstract
A multicast processing section constructs, when it is determined that a received packet is a packet on a multicast packet and multicast group management protocol, a table showing a correlation between a host device and a multicast group in a port number-multicast physical address correlation storing section as well as in a multicast router-connected port storing section according to the received packet, and controls to transfer a packet for each multicast group between a multicast router and host devices according to the table.
Claims6
A method of transmitting a packet in a network, comprising:
- receiving a first packet which has been transmitted under a multicast group management protocol to ask whether the network includes any active members of a multicast group related to the multicast group management protocol;
- receiving a second packet which is a response packet that has been transmitted under the multicast group management protocol in response to the first packet;
- and
- transmitting the second packet through a port to which a multicast router is coupled,
- wherein the second packet is the response packet which is received first for each multicast address.
A method of transmitting a packet in a network, comprising:
- receiving a first packet which has been transmitted under a multicast group management protocol to ask whether the network includes any active members of a multicast group related to the multicast group management protocol;
- receiving a second packet which is one of response packets that has been transmitted under the multicast group management protocol in response to the first packet;
- determining that the second packet is a response packet which is received first for each multicast address;
- and
- transmitting only the second packet among the response packets through a port to which a multicast router is coupled upon determining that the second packet is a response packet which is received first for each multicast address.
Dependencies are inferred from the claim text.