Nortel Networks Corporation

Rockstar Consortium US LP

Rockstar Bidco, LP

Rpx Clearinghouse LLC

Allan Sand

Dany Sylvain

Jozef Babiarz

Robert Paterson

Anthony L Mar

A flow admission control module for IP traffic types monitors network topology and usage. A new flow is not admitted if it is determined that the flow would push the utilization of available bandwidth reserved for the traffic type on a link in the associated path beyond a predetermined threshold. The admission control module may, as a result of dynamic changes to network topology capacity, re-compute the link utilization for effected active flows The admission control module may also account for protection regimes in flow admission calculations.

Flow admission control in an IP network

A flow admission control module for IP traffic types monitors network topology and usage. A new flow is not admitted if it is determined that the flow would push the utilization of available bandwidth reserved for the traffic type on a link in the associated path beyond a predetermined threshold. The admission control module may, as a result of dynamic changes to network topology capacity, re-compute the link utilization for effected active flows. The admission control module may also account for protection regimes in flow admission calculations.

The present invention provides a novel system and method for designing a network. The system is preferably a computer operable to allow a user to input the nodes and links of a network, and to input product information associated with the nodes and links. The computer also stores product-reliability models corresponding to the hardware information. The computer is operable to perform operations that consider the nodes, links, product models to determine a set of reliability performance parameters. The computer can be further operable to vary certain reliability parameters to determine the impact from the perspective of an end-user or other type of network client. One method can include the collection of desired client requirements from the end-user and designing various network configurations to conform with the desired client requirements. Thus, the present invention can be used, and to optimize network designs. Another application is to incorporate the tool in network management product to be used to build or enhance existing networks. This function could be both static as well as dynamic. Thus, the present invention can also be used for other purposes such as modifying, monitoring or optimising existing networks.

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Woodlawn, Canada

Allan Sand