Other

Hitachi, Ltd.

Alaxala Networks Corporation

Nagayuki Hirota

Shigeki Morimoto

Yoshihito Sako

Hiroshi Sekino

Masashi Fukuda

Hidehiro Fukushima

Toshiyuki Kubo

Keisuke Kadowaki

In a network relay router, a multicast routing protocol processing moduleA sequentially sends a join request message (CP) to a routerfunctioning as a rendezvous point via an interface, based on the settings of a multicast group address or destination address and a sender VRF name. The network relay routerreceives a multicast packet (DP) from the routervia the interfaceand acquires a sender address or source address of a transmission device SE from the received multicast packet. The network relay routersends a join request message (CP) via an interfaceon the side of the transmission device SE and receives a multicast packet via the interface. This establishes an optimum multicast route (MR) between the transmission device SE and the network relay router

Network relay apparatus and inter-network relay method

A packet switching is performed according to a routing information for relaying particular packets which is produced by the route computation based on the information of a received packet and the kept parts-of-routing-information useful as a basis for the route computation. At this time, the route through which the packet is relayed is determined on the basis of the kept parts-of-routing-information before the route computation. Then, the received packet is relayed according to the determined route. Next, a new routing information is produced by the route computation based on the information of the received packet and the parts-of-routing-information. Thereafter, the succeeding packets of the same route are relayed on the basis of the new routing information.

Packet switching method and apparatus thereof

Growing community of inventors

Ebina, Japan

Nagayuki Hirota