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Method for routing information over a network employing centralized
A method and apparatus for centralized control of a network is described. The network includes a number of nodes. The method includes creating a database and...
Routing system and method for synchronizing a routing system with peers
A routing system provides for transparent routing system failover by checkpointing route prefixes during normal operation by maintaining a route prefix table....
Slot adapter for reconfiguring slots in a network device
A network device includes card slots and Network Module slots that be reconfigured to hold cards and network modules having different form factors.
Technique for providing multi-homing capability in data networks
Various aspects of the present invention are described herein for providing multi-homing capability to networks, subnetworks, and/or hosts through the use of a...
Querying ASAP policy systems
A method for querying any-service-any-port policy systems includes a method for a network device to route calls using policy considerations. The method receives...
Methods and apparatus for Mobile IP Home Agent clustering
Methods and apparatus for processing a registration request from a Mobile Node that has roamed to a Foreign Agent supporting Mobile IP are disclosed. In a first...
System and method for loadbalancing in a network environment
A method for loadbalancing in a network environment is provided that includes receiving a primary create request from an end user for a communications link...
Method and system for a voice multicast hardware accelerator
A method and system for a voice multicast hardware accelerator are disclosed in which a network device or system includes a host system coupled to a memory to...
Management of call requests in multi-modal communication environments
A communication system for providing multi-modal call management includes a communication manager, a notification database, and a personal assistant. The...
Handoff between cellular and enterprise wireless networks
A mobile station includes a first wireless interface that can couple to a first wireless network, a second wireless interface that can couple to a second...
Idle detection for answer supervision
A network device has the capability of monitoring voice over data networks calls. The network device includes a voice activity detector that detects voice...
System and method for end-to-end communications tracing
A method for tracing communications includes receiving trace criteria from a first remote element and determining whether a call signaling message matches the...
Interworking of packet-based voice technologies using virtual TDM trunks
A method for directly converting packet-based voice data of two non-compatible formats, (e.g., VoIP and VOATM), is described. A VoIP call agent sets a connection...
Transmitting multiple packets in a frame
Transmitting packets in a frame includes receiving the packets. Delay constraints are established, where each delay constraint is associated with a packet. Frame...
System and method for communicating packets in a network environment
A method for communicating packets in a network environment is provided that includes receiving a first and a second packet and determining if the second packet...
Method and apparatus for controlling access to debugging software
A software module includes a functional portion for day-to-day management and configuration of one or more network devices. During the development of the...
Assuring physical security of a subscriber line device
A security system and method for a client device connected to a network by a broadband connection. The security system insures that the client machine has not...
Virtual SCSI bus for SCSI-based storage area network
A storage router having an internet protocol (IP) port for coupling to a network supporting IP packets, a fibre channel port for coupling to a fibre channel...
System for sharing resources among RSVP sessions
A system associates multiple discrete traffic flows within a computer network into a group, and allows the traffic flows corresponding to a given group to share...
Diagnostic/remote monitoring by email
A network device for use in a communication system having a technical support center operated by a technical support staff, the technical support center being in...
Method and apparatus for automatic network address assignment
The present invention includes a method and apparatus for automatically assigning a network address to a network device in an electronic communications network...
Approach for propagating changes from a database to a client
An approach for propagating changes from a database to a client includes providing to the client a copy of a portion of the database, wherein the portion of the...
Microwave signal edge detector circuit for improved clock recovery
A signal edge detector circuit is described for the detecting the signal transitions in a stream of microwave signals at a predetermined clock signal rate,...
Mechanisms for providing stateful NAT support in redundant and asymetric
Various techniques are described which may be used for improving traffic flows between private networks and public networks. According to one aspect of the...
Separation of packet registration from mobile devices
A communications system includes an internet protocol (IP) enabled mobile unit having a home network. The system also includes a foreign network that can provide...
Detection of forwarding problems for external prefixes
Methods and apparatus for enabling a provider to perform a tracing procedure to determine the existence forwarding problems within its network are disclosed....
EMI shielding techniques using multiple EMI shields which share the same
circuit board holes
A circuit board module includes a circuit board defining a top side, a bottom side and holes extending through the circuit board between the top and bottom...
Antenna array with vane-supported elements
A multiple element antenna array is disclosed in which a plurality of panels each support one or more antenna elements. One or more of the panels are preferably...
Technique for determining multi-path latency in multi-homed transport
The present invention describes various techniques which may be used for determining multi-path latency in data networks which utilize a multi-homed transport...
System and method for maintaining seamless session operation
A network (10) includes a load balancer (18) that passes traffic between a client (14) and a gateway (20). For initial messages from a client (14), the load...
Two phase reservations for packet networks
A two phase reservation mechanism for use with computer networks carrying voice or other time or bandwidth sensitive traffic. During the first or "resource...
Devices, software and methods for allocating jitter buffer memory based on
network region of network endpoint
Devices, software and methods are provided for allocating different amounts of memory of a network communication device as jitter buffer for different channels,...
System and method for balancing rings coupling routing platforms
A ring access system, for use in system having a plurality of routing platforms coupled by redundant rings, that allows access to either ring when a token is...
Zero overhead back channel for adaptive transmit filter updates in SerDes
A method and system that communicates adaptive transmit-side filter updates between a receiver and transmitter inserts additional versions of control codes into...
Hierarchical scheduler inter-layer eligibility deferral
Conventional schedulers propagate entries by either polling until an entry is ready, or alternatively, by attaching a so-called "readiness time" to entries. A...
System and method for creating and using unique packet preambles for data
Data communication system is provided that comprises a plurality of switches which each comprise a respective controller. Ports on the switch are connected to...
Switch for implementing read only zones in a fibre channel fabric
The Switch includes a port configured to receive a command frame when installed in a switching Fabric. The frame identifies a source device and a destination...
Hardware-based route cache using prefix length
The present invention defines a system and method of routing packets using a hardware-based route cache with prefix length. When a router receives a packet, the...
Program and method for preventing overload in a packet telephony gateway
A program and a method for a gateway are provided to deny incoming calls to prevent overload. The program provides a maximum CPU utilization threshold CPUT,...
Device, apparatus, method and assembly for coupling an electrical
component with a circuit board
A device, apparatus and printed circuit board assembly for removably coupling an electrical component with a PCB are described, which provides adequate...
Industrial ethernet switch
According to one embodiment of the invention, an apparatus includes a housing having a front side and a bottom side adjacent the front side. The apparatus also...
Chassis with multi-cantilever spring fingers for EMI shielding and ESD
protection of electronic devices
A chassis utilizes spring fingers having contact portions and mid portions where each spring finger forms multiple cantilevers to provide different spring...
Selective process restart based on API changes
Techniques for selectively restarting processes based on API changes are provided. Information is stored that can be accessed to identify processes that are...
Facilitating 802.11 roaming by pre-establishing session keys
A method and system for pre-authenticating a pre-establishing key management on a roaming device prior to reassociation to facilitate fast hand-off in a wireless...
Accessing multiple copies of RAM distributed throughout an ASIC/FPGA and
maintaining their content consistency
A system and method for writing the same data field to multiple RAM copies during a single write cycle that fans out write data, address data, and control data...
System and method for configuring contents of network management
A method for configuring contents of a network management notification includes receiving at a management station a list of notifications supported by an agent...
Method and apparatus for generating diagnoses of network problems
A method is disclosed for network knowledge-based diagnosis comprising the machine-implemented steps of creating and storing one or more symptoms, wherein each...
Defining link aggregation across a stack
A cross stack port aggregation method and system associates a destination index with a received packet when it is provided to devices in the stack. Each device...
Search engine for forwarding table content addressable memory
A hardware search engine facility is provided to allow CPU search and update of a Forwarding Table CAM under the control of software running on the CPU. The...