In-band DPI media reservation modifications to RFC 3313
Originating portfolio: ALU
Estimated expiration: 2029-Mar-12
Listed For Sale
Initial bid date: 2018-May-01
Potentially relevant companies (14): Allied Telesis Holdings KK, Aruba Networks, Inc., AT&T / DIRECTV, Bascom Global Internet Services Incorporated, Charter Communications, Inc., Cisco Systems, Inc., Consolidated Communications Holdings, Inc., Cox Communications Incorporated, Extreme Networks, Inc., F5 Networks, Inc., Huawei Technologies Co., Ltd., Juniper Networks Inc., Time Warner Cable Enterprises LLC, ZTE Corporation
Products & technologies (5): Datacom:Packet Switch, Network:Management, Network:Security, QOS - Quality of Service, Telecom:Subscriber Services
In various exemplary embodiments, a Deep Packet Inspection device is integrated into a provider edge router associated with a user agent client or provided externally. The DPI device monitors the exchange of packets between an originating proxy and a user agent client and inspects the packets to identify SIP control messages. By monitoring the messages exchanged between the two devices, the DPI device may determine the type of application, desired QoS, source, destination, and other information related to the connection. Using this information, the router may then access a policy database to determine whether there is a QoS policy for the application and/or user. Based on this determination, the router may initiate network reservation for an anticipated data flow or store the information so the flow of packets can be remarked as the packets arrive. Accordingly, in various exemplary embodiments, the edge router is aware that QoS should be granted.
1. A system for implementing Quality of Service (QoS) for a Session Initiation Protocol (SIP) connection between a source node and a destination node, the system comprising:
a receiver that receives data transferred between the source node and the destination node;
a transmitter that transmits data between the source node and the destination node:
a non-transitory computer-readable storage medium comprising a SIP policy database that stores QoS policies for nodes and applications serviced by a router, and a SIP connection database that stores information used to identify connections for the serviced nodes;
a Deep Packet Inspection (DPI) processor configured to intercept a SIP control message transferred between the source node and the destination node over a control channel, extract connection information regarding the SIP connection from from at least one of layers 4 through 7 of the OSI model of the control message, and store the connection information in the SIP connection database; and
a general processor that modifies the QoS for packets belonging to the SIP connection at one or more network nodes between the transmitter and the destination node using QoS information obtained by querying the SIP policy database using the connection information in the SIP connection database.
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