Exact Match Lookup Scheme
Granted: March 10, 2011
Application Number:
20110060876
An exact match lookup system includes a hash function that generates a hash value in response to an input hash key. The hash value is used to retrieve a hash bucket index value from a hash bucket index table. The hash bucket index value is used to retrieve a plurality of hash keys from a plurality of hash bucket tables, in parallel. The retrieved hash keys are compared with the input hash key to identify a match. Hit logic generates an output index by concatenating the hash bucket index…
USER SELECTABLE MULTIPLE PROTOCOL NETWORK INTERFACE DEVICE
Granted: March 10, 2011
Application Number:
20110058573
An Ethernet/Fibre Channel network interface device which can be configured by a user to operate on an FC SAN, a CEE network or both. In one embodiment the configuration can be done using jumpers or connections to the pins of a chip, thus allowing a manufacturer to only inventory one device for use with either or both networks. In a second embodiment the configuration can be done in software by setting registers and memory values on the device. This embodiment allows the device to be…
SYSTEMS AND METHODS FOR AUTOMATIC INCLUSION OF ENTITIES INTO MANAGEMENT RESOURCE GROUPS
Granted: March 3, 2011
Application Number:
20110055276
Systems and methods for the automatic inclusion of entities into one or more management resource groups are described herein. Some embodiments include processing logic and memory coupled to the processing logic and including a database. The processing logic stores within the database a grouping representative of at least one network element, a role defined for a user, and a grouping-role pair associated with the user. The processing logic further automatically adds a new element as a…
DEFINING AN OPTIMAL TOPOLOGY FOR A GROUP OF LOGICAL SWITCHES
Granted: March 3, 2011
Application Number:
20110051624
A Layer 2 network switch fabric is partitionable into a plurality of virtual fabrics. A network switch chassis is partitionable into a plurality of logical switches, each of which may be associated with one of the virtual fabrics, including a base switch. Logical switches in multiple network switch chassis are connected by logical connections, such as logical inter-switch links that use physical connections, such as extended inter-switch links between base switches, for data transport. A…
TECHNIQUES FOR EFFICIENTLY UPDATING ROUTING INFORMATION UPON SHORTEST PATH TREE COMPUTATION
Granted: February 24, 2011
Application Number:
20110044351
Techniques for efficiently updating routing information in a network device such as a router. According to an embodiment of the present invention, information is stored identifying one or more nodes and leaves owned or advertised by the nodes. When a change occurs in a network environment, information is stored identifying one or more nodes and leaves that have changes associated with them. The routing information in the network device is then updated for only those nodes and leaves that…
Scalable Key Archival
Granted: February 17, 2011
Application Number:
20110038482
A solution for scalable key archival includes, at a network device, determining whether a key management device that is not part of a current key management device configuration has been newly added to a network. The method also includes, if the key management device has been newly added to the network, determining whether the network device has a first application program interface (API) or device driver for communicating with the key management device. The method also includes, if the…
RE-KEYING DATA IN PLACE
Granted: February 17, 2011
Application Number:
20110038477
A system comprises an encryption engine and a host processor coupled to the encryption engine. The host processor determines when a time period has expired for a unit of data. Upon determining that the time period has expired, the host processor causes the encryption engine to re-key the unit of data in place.
AUTOMATIC ADJUSTMENT OF LOGICAL CHANNELS IN A FIBRE CHANNEL NETWORK
Granted: February 17, 2011
Application Number:
20110038263
One embodiment of the present invention provides a system that facilitates automatic adjustment of logical channels in a Fibre Channel (FC) network. During operation, the system receives FC data frames. A respective data frame is associated with a logical channel. The bandwidth on an FC link can be allocated into a plurality of logical channels, and a respective logical channel is associated with a dedicated buffer and can transport a plurality of data flows with data frames of variable…
PER PRIORITY TCP QUALITY OF SERVICE
Granted: February 3, 2011
Application Number:
20110029676
An IP gateway device establishes distinct TCP sessions within a single FCIP tunnel, each TCP session being designated for a different priority of service (e.g., high, medium, low), plus a control stream. Each TCP session has its own TCP stack and its own settings for VLAN Tagging (IEEE 802.1Q), quality of service (IEEE 802.1P) and Differentiated Services Code Point (DSCP). By distributing data streams assigned to different priorities of service into different TCP sessions within the FCIP…
MASSIVE MULTI-CORE PROCESSOR BUILT WITH SERIAL SWITCHING
Granted: January 13, 2011
Application Number:
20110010481
A multi-processor architecture for a network device that includes a plurality of barrel cards, each including: a plurality of processors, a PCIe switch coupled to each of the plurality of processors, and packet processing logic coupled to the PCIe switch. The PCIe switch on each barrel card provides high speed flexible data paths for the transmission of incoming/outgoing packets to/from the processors on the barrel card. An external PCIe switch is commonly coupled to the PCIe switches on…
SYSTEM, METHOD AND APPARATUS FOR PROVIDING MULTIPLE ACCESS MODES IN A DATA COMMUNICATIONS NETWORK
Granted: December 23, 2010
Application Number:
20100325700
A system, method and apparatus for providing multiple access modes in a data communications network includes a network access device having a plurality of input ports, a plurality of output ports, and a switching fabric for routing data received on the plurality of input ports to at least one of the plurality of output ports. Control logic within the network access device is adapted to determine whether a user device coupled to one of the plurality of input ports supports a user…
Load Balance Connections Per Server In Multi-Core/Multi-Blade System
Granted: December 23, 2010
Application Number:
20100325280
A network device includes a plurality of blades, each having a plurality of CPU cores that process requests received by the network device. Each blade further includes an accumulator circuit. Each accumulator circuit periodically aggregates the local counter values of the CPU cores of the corresponding blade. One accumulator circuit is designated as a master, and the other accumulator circuit(s) are designated as slave(s). The slave accumulator circuits transmit their aggregated local…
Systems and methods for scalable distributed storage processing
Granted: December 16, 2010
Application Number:
20100318700
A system including a storage processing device with an input/output module. The input/output module has port processors to receive and transmit network traffic. The input/output module also has a switch connecting the port processors. Each port processor categorizes the network traffic as fast path network traffic or control path network traffic. The switch routes fast path network traffic from an ingress port processor to a specified egress port processor. The storage processing device…
SIDE-EXHAUST COOLING SYSTEM FOR RACK MOUNTED EQUIPMENT
Granted: December 16, 2010
Application Number:
20100315788
A cooling system for rack mount electrical or electronic equipment comprises a hollow, box-shaped exhaust shelf having a vent on at least one end face thereof. The exhaust shelf may be configured for rack mounting. A side duct, open on its inner side, is mounted between the exhaust shelf and a top rail adapted to be mounted between a front post and an opposing rear post in a four-post rack mount enclosure. A plenum in the side duct is in fluid communication with the interior chamber of…
Quality of Service Using Virtual Channel Translation
Granted: December 9, 2010
Application Number:
20100309921
Virtual channels are used to improve quality of service through a large port count switch. Data frames are sent from one small switch to another small switch within the large port count switch on virtual channels. The use of virtual channels helps prevent congestion caused by a first external source device sending data to a first external destination device from affecting a second external source device sending data to a second external destination device.
TCAM Management Approach That Minimize Movements
Granted: November 18, 2010
Application Number:
20100293327
Methods for efficiently managing a ternary content-addressable memory (TCAM) by minimizing movements of TCAM entries include determining a first node and a second node in the TCAM, determining if there is a free TCAM entry between the first node and the second node, and storing the new entry in the free TCAM entry. Upon determining that a free TCAM entry does not exist between the first node and the second node, further determining a chain of nodes and then determining if there is a free…
COOKIE INVALIDATION OR EXPIRATION BY A SWITCH
Granted: November 18, 2010
Application Number:
20100293298
A switch may be used to force the expiration of a cookie on a user's system by inserting an expiration field into the cookie contained in a network response packet. Additionally, a mechanism is provided to delete or damage a cookie contained in a network request packet, so that server software is not disrupted by the receipt of a cookie. Deleting a cookie results in a cleaner request, but damaging a cookie may be more efficient in certain circumstances. By providing these features, an…
FLEXIBLE STACKING PORT
Granted: November 11, 2010
Application Number:
20100284414
A stackable device having a plurality of data ports, wherein each of the data ports is capable of operating as a regular data port or a stacking port. A first set of one or more of the data ports is specified as a first flexible stacking port, and a second set of one or more of the data ports is specified as a second flexible stacking port. Each flexible stacking port can be individually configured to operate as an actual stacking port, if required by the configuration of an associated…
System And Method For Multiple Spanning Tree Protocol Domains In A Virtual Local Area Network
Granted: October 14, 2010
Application Number:
20100260072
A system and method that modifies the behavior of the IEEE 802.1D STP standard to thereby decouple the one data domain from the one control domain involves managing multiple spanning tree protocol (STP) instances in a virtual local area network (VLAN). The method includes the step of assigning a unique set of ports within the VLAN to each of the multiple STP instances. Then, each of the multiple STP instances are managed to keep each of the multiple STP instances separate. Finally, when…
Secure Stacking Setup
Granted: October 7, 2010
Application Number:
20100257283
A method of configuring a stack includes: connecting stacking ports of a plurality of stackable devices using one or more stacking links; connecting a user console to a first one of the stackable devices; transmitting a stack setup command from the user console to the first stackable device; and establishing a stack in response to the stack setup command. The stack is established by initiating a discovery process with the first stackable device in response to the stack setup command,…
