Cisco Technology, Inc.

Anand Jayaraman

Balaji Venkat Venkataswami

Srinivasan Santhanam

Mahesh Vittal

Srinivas Subramanian

Suresh Pachiappan

Pandiarajan Selvaraj

Balaji Venakat Venkataswami

A method and system for determining path maximum transfer unit (PMTU) in an Internet Protocol (IP) multicast is described. If a packet of a size greater than the MTU of any link of a path, with its Don't Fragment (DF) bit set, is sent by the source, the packet is dropped and an ICMP message, stating 'Destination unreachable, DF bit set', is sent to the source. The rate of messages to the source is controlled to avoid implosion of traffic. In response to the messages, the source sends multicast probe packets of multiple sizes to multicast distribution tree to determine its PMTU.

Method and system for determining path maximum transfer unit for IP multicast

A method and system for sending a multimedia stream in IP multicast networks are provided. IGMP report data is collected by a plurality of routers. The routers report the IGMP report data to a netflow collection server. The netflow collection server collates the IGMP report data. The collated IGMP report data is forwarded to an encoder coordinator. The encoder coordinator adaptively computes an encoding rate of the multimedia stream. The encoded multimedia stream is sent to a plurality of receivers at the encoding rate.

Method and system for sending a multimedia stream in an IP multicast network

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Chennai, India

Anand Jayaraman