Nortel Networks Corporation

Nokia Solutions and Networks Oy

Genband US LLC

Scott Larrigan

Dany Sylvain

Julian Mitchell

Bernard Francois St-Denis

John Frank Pillar

Various example embodiments for supporting transport of data packets over optical fiber networks are presented herein. Various example embodiments for supporting transport of data packets over optical fiber networks may be configured to support transport of data packets over optical fiber networks based on mapping of data packets onto wavelength channels based on quality of service (QoS) mapping. Various example embodiments for supporting transport of data packets over optical fiber networks based on mapping of data packets onto wavelength channels based on QoS mapping may be configured to support transport of data packets over optical fiber networks based on mapping of data packets onto wavelength channels based on QoS mapping information that includes mappings of data packet QoS levels to wavelength channel QoS levels.

Transport of packets over optical networks

A VPN media proxy for communication between VPNs and external networks having different addressing schemes, has interfaces to the two or more VPNs, a configuration store, and an address translator arranged to translate the source and destination address of the information based on the configuration. Sharing of the proxy by many VPNs can keep costs down or enable more VPNs to be provided. A call server also shared by the VPNs is used to set up the session and to establish the configuration. The proxy can have an address within each VPN so that it appears to be a dedicated resource for each VPN.

Media proxy having interface to multiple virtual private networks

A VPN gateway for interfacing two or more VPNs to external networks such as the internet or a PSTN having different addressing schemes, has a NAT shared by the VPNs for converting VPN addresses to addresses of the external network. An advantage of this is reduced number of additional network elements, e.g. boxes, and fewer additional addresses. The NAT can be a source and destination NAT, arranged such that entities in the external networks appear to have an address within an address range of the respective VPN. Thus, entities in the external resource can appear as trusted resources inside the VPN. The gateway can incorporate a converter for converting between formats such as VoIP packets and TDM calls.

Gateway shared by multiple virtual private networks

A VPN converter for interfacing two or more VPNs to an external network receives information relating to a communication session between an entity in any of the VPNs and the external network and converts a format such as an encoding or transmission format of the information, e.g. between VoIP packets and TDM signals for the PSTN. The converter is under the control of a call server and carries out routing and NAT functions. It determines which VPN the information relates to. By sharing the call server and converter between many VPNs, the amount of equipment can be reduced.

Convertor shared by multiple virtual private networks

The invention provides a method and apparatus for policing a traffic flow in which a first stage of policing is performed on the traffic flow to produce a first stage conforming flow and a first stage violating flow. These two flows are then policed again in a second stage of policing, such that the first stage conforming flow can take advantage of a capacity allowed for the first stage violating flow which is unused by the first stage violating flow. In some embodiments, performing a first stage of policing involves associating each packet of the traffic flow with one of a plurality of sub-flows, policing at least one of the plurality of sub-flows individually to produce for each sub-flow a respective conforming sub-flow and a respective violating sub-flow. The conforming sub-flow(s) collectively are the first stage conforming flow. The violating sub-flows collectively are the first stage violating flow.

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Ottawa, Canada

Scott Larrigan