Patent ID: 6856621
Filing Date: 2005-02-15
Classification: H04L

Abstract:
1. A method for transmission of data in an P packet network which comprises a cluster of cluster units, a switching unit having a plurality of ports, the cluster units being connected to a part of the plurality of ports, which cluster units share a unicast P address, said method comprising at least steps in which: the cluster units are configured to be members of an P multicast group, the IGMP protocol is used to obtain information about to which ports of the plurality of ports the cluster units are connected, the MAC address of a received P packet is checked, and if said MAC address is a multicast MAC address, the P destination address of said packet is compared to the unicast P address shared by the cluster units, if the P destination address of said packet is the same as the unicast P address, the packet is forwarded to those ports, to which the cluster units were found to be connected.