Abstract: A Data Center Ethernet (“DCE”) network and related methods and device are provided. A DCE network simplifies the connectivity of data centers and provides a high bandwidth, low latency network for carrying Ethernet, storage and other traffic. A Fibre Channel (“FC”) frame, including FC addressing information, is encapsulated in an Ethernet frame for transmission on a Data Center Ethernet (“DCE”) network. The Ethernet address fields may indicate that the frame includes an FC frame, e.g., by the use of a predetermined Organization Unique Identifier (“OUI”) code in the D_MAC field, but also include Ethernet addressing information. Accordingly, the encapsulated frames can be forwarded properly by switches in the DCE network whether or not these switches are configured for operation according to the FC protocol. Accordingly, only a subset of Ethernet switches in the DCE network needs to be FC-enabled. Only switches so configured will require an FC Domain_ID.

Abstract: A method is provided that includes receiving a request from a communication device to establish a communication session with a mobile station, the mobile station being operable to roam between a private and a public network. The mobile station is signaled via a cellular data network that a call is being initiated for the mobile station. Signaling information may be exchanged with a voice gateway such that one or more voice circuits are established. A signaling pathway may be established between an Internet protocol private branch exchange (IP PBX) and the mobile station via the cellular data network. The establishment of the signaling pathway is substantially concurrent with the establishment of one or more of the voice circuits. One or more features associated with a private network are delivered to the mobile station during the communication session as an end user moves between the public and private networks.

Abstract: A switch apparatus and method according to the invention provides a carrier-class switching platform with a highly optimized data path and distributed signaling stacks to achieve high-density differential voice services. Incoming voice calls of any media type (TDM voice/fax, VoIP, VoATM, VoFR) are packetized and adapted for egress transmission of the same or another media type according to the service plan profile of the parties, and/or the instantaneous availability or cost of bandwidth resources. All calls are switched in an ATM switching core with QoS characteristics that can also be determined based on service plan profile. A call server handles call setup and management functions, as well as call signaling. Advantageously, the call server provides signaling relay functions to further support and enable the media conversion of voice calls.

Abstract: Techniques for managing access to resources utilizing call information are provided. Resources of like type can be pooled into resource groups and customers can then be sold a base amount of a resource, to be taken from the appropriate resource group, that the customer can then provide to users or callers. The server of the resources utilizes the telephone number of the party called and call type in order to identify the resource that is requested. If the base amount of the requested resource has already been allocated, an overflow amount can be utilized to provide additional resources of a like type, if they are available. Thus, the resources can be efficiently managed to allow a high utilization of the available resources.

Abstract: A method and system transforms one or more lists for a data communications system into a single list, each list of the one or more lists including a plurality of entries. The method includes removing non-terminating entries from the plurality of entries in the one or more lists, the removing each non-terminating entry removing all but a last non-terminating entry in any of the one or more lists; and eliminating from the plurality of entries one or more entries that provide for one or more impossible actions, wherein the removing of non-terminating entries and the eliminating of one or more entries that provide for impossible actions, if any, produce a single list preserving tracing of the entries in the single list to the plurality of entries.

Abstract: A method and system for providing services to a communication session anchored to a micro wireless network includes providing at a router of the micro wireless network an interface for communication with a service node of a macro wireless network that is coupled to the micro wireless network. The interface is of a same type as used by a radio access network of the macro wireless network to communicate with the service node. Information associated with the session is communicated between the interface and the service node in a format used by the service node to communicate with the radio access network of the macro wireless network. The macro network provides portability services to the session of the micro wireless network through the interface.

Abstract: A method and system for providing services to a communication session anchored to a micro wireless network includes providing at a router of the micro wireless network an interface for communication with a service node of a macro wireless network that is coupled to the micro wireless network. The interface is of a same type as used by a radio access network of the macro wireless network to communicate with the service node. Information associated with the session is communicated between the interface and the service node in a format used by the service node to communicate with the radio access network of the macro wireless network. The macro network provides portability services to the session of the micro wireless network through the interface.

Abstract: A technique is disclosed for managing load balancing operations in a storage area network. A frame is received at a switch in the fibre channel fabric. According to a specific implementation, the frame includes header information including a source device identity and a destination device identity. Zone and/or flow information relating to the identity of the zone/flow which is associated with the frame is identified. Using the identified information, a load balancing mechanism to be used for handling the frame is selected. According to a specific implementation, the selection of the load balancing mechanism is based at least in part upon the identity of the zone and/or flow which is associated with the frame.

Abstract: A DSLAM aggregation topology VLAN bundling mechanism includes an edge device port that receives a packet from a Digital Subscriber Line Access Multiplexer (DSLAM) device, the packet including an inner Virtual Local Area Network (VLAN) tag that identifies a Digital Subscriber Line (DSL) subscriber. A processor of the edge device adds an outer VLAN tag to the packet, the outer VLAN tag identifying the DSLAM and a destination server coupled to an Ethernet access network. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).

Abstract: A method of operation for a provider edge device of a core network includes receiving a customer frame from an access network; the customer frame having a first Virtual Local Area Network (VLAN) tag of a first predetermined bit length. The first VLAN tag including a service instance identifier. The service instance identifier of the first VLAN tag is then mapped into a second VLAN tag of a second predetermined bit length greater than the first predetermined bit length. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).

Abstract: A VPLS model is implemented in a network-facing provider edge (n-PE) device configured to receive a packet from an access network; the packet having a first Virtual Local Area Network (VLAN) tag of a first predetermined bit length. The n-PE device mapping the service instance identifier of the first VLAN tag into a second VLAN tag of a second predetermined bit length greater than the first predetermined bit length, the second VLAN tag identifying a Virtual Private LAN Service (VPLS) instance. The n-PE device then sends the packet with the second VLAN tag across a service provider (SP) core network via a pseudowire (PW) that functions as a logical link to another PE device. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.

Abstract: A method for communicating in a wireless application protocol (WAP) network environment is provided that includes receiving a request packet at a WAP gateway and positioning an identifier into the request packet. A content switch then identifies the identifier and correlates the identifier to a source that generated the request packet. An internet protocol (IP) address associated with the source is positioned in the request packet before communicating the request packet to a next destination.

Abstract: A method, system, apparatus and machine-readable medium for transmitting a packet through a network to convey network topology is provided. The method includes the step of generating at least one link state protocol data unit (LSP) with a first identifier until reaching a maximum sequence number in a sequence assigned to a network device, represented by the first identifier. The method further includes the step of modifying the first identifier to produce a second identifier. The method also includes the step of generating at least one LSP with the second identifier, and with a sequence number that is less than or equal to the maximum sequence number in the sequence. The system for transmitting a packet through a network, to convey network topology, comprises the means for performing the above-mentioned method steps.

Abstract: A method includes establishing a modem connection, receiving an on-hold request over the modem connection, comparing a cumulative time that the modem connection has been on hold to a threshold value, and resolving the on-hold request based upon the comparison.

Abstract: Methods, systems, and apparatuses for transmitting link state packet (LSP) through a network are provided. The method includes dividing the LSP into LSP fragments having respective fragment numbers, transmitting the LSP fragments repetitively through the network, identifying at least one LSP fragment that is updated while the LSP fragments are being transmitted, and retransmitting the identified LSP fragments. The transmitted updated LSP is used for processing the Shortest Path First algorithm to identify accurately the shortest path that can be used to establish communication in the network.

Abstract: A method for detecting memory leaks includes initializing memory for a process under a load. Bits in a bitmap are then set/reset during a time interval after initialization of the memory. Each bit is set/reset at a location in the bitmap that uniquely corresponds to an address of a memory allocation/deallocation of the process stopping the load. Memory allocations corresponding to remaining bits in the bitmap are listed to identify the leaked memory. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).

Abstract: An improved client network address translation (“NAT”) system is provided. Methods are provided for initializing connection control blocks with the client NAT addresses when a storage pool of connection control blocks are allocated. This avoids the costly overhead as connections are created and destroyed. Unlike the prior art solutions, once the connection control blocks of the present invention are allocated, they remain in effect until the storage subpool is deleted. Secondly, in order to provide as large a pool of client NAT addresses as possible, methods are provided for using intervals to allocate and reclaim client NAT addresses as subpools are allocated and freed.

Abstract: A system and method for identifying and forwarding traffic to/from Digital Subscriber Line Access Multiplexer (DSLAM) devices and feature servers without ambiguity includes a user-facing provider edge (u-PE) device that receives a customer frame from a DSLAM device, the customer frame being of a first format that includes a first Virtual Local Area Network (VLAN) tag of a first bit length. The first VLAN tag identifies a Digital Subscriber Line (DSL) subscriber. The customer frame is re-formatted by the u-PE device such that the first VLAN tag is mapped to a second VLAN tag of a second bit length greater than the first bit length, the second VLAN tag identifying a service instance of the Ethernet access network. The u-PE device encapsulating the customer frame inside a provider frame, with a provider source Media Access Control (MAC) address represents a MAC address associated with the DSLAM, and a provider destination MAC address represents a MAC address of a destination device.

Abstract: A host object representing a user, a service object representing a service, and a connection object linking the two may be utilized in order to provide Quality of Service (QoS). The host object and/or connection object may contain a provisioning scheme defining a limit on traffic, which can be provided through either a local or remote programming mechanism. When traffic flows through the host object and/or connection object, the appropriate provisioning scheme is utilized to determine which packets to discard.

Abstract: A method for protecting firewall load balancers from a denial of service attack is provided. Packets are received by the firewall load balancer. Each packet has a source and a destination. The firewall load balancer is equipped with a connection database that can contain entries about the packets. Upon receipt of a packet, the connection database is queried to determine whether or not there is an entry for the received packet. If an entry is found in the database, the packet is forwarded to its destination. Otherwise, if the packet was received from a firewall, then a new connection entry for the packet is built and is saved to the connection database and the packet is forwarded on to its destination. If the packet does not have an entry (match) in the connection database and the packet was not received from a firewall, then the packet is forwarded to a firewall.