Fujitsu Corporation

Daisuke Namihira

Yasunori Terasaki

Masao Yoshikawa

Junichi Ehara

Takashi Iino

Ken Aoyama

Kimihito Matsumoto

A disclosed switch includes: plural ports; a first unit that applies profile associated with identification data to a port of the plural ports, upon receiving a message, which includes the identification data of profile relating to the another apparatus, through a first link in a situation that another apparatus connected to the port through the first link is connected to another switch through a second link and the first and second link are virtually integrated; a second unit that generates information including a first identifier of the profile and a second identifier of the first and second links virtually integrated, and transmits the information to the another switch, upon receiving the message; and a third unit that applies profile associated with a third identifier to the port when that profile has not been applied, upon receiving the third identifier of the profile and the second identifier from the another switch.

Switch and setting method

A disclosed switch includes: plural ports each of which is connected to another apparatus; a determination unit that determines, for each of the plural ports, whether the port is connected to one of plural switches integrated logically; and a setting unit that sets, for each of the plural ports, a port type or propriety of use based on a result of determination by the determination unit.

A disclosed switch includes: ports that include a first port to be connected to another switch included in a first domain that includes plural switches to be virtually integrated, and a second port that is other than the first port; a first processing unit configured to obtain data of a switch included in the first domain through the first port; and a second processing unit configured to obtain data of switches included in a second domain that is adjacent to the first domain through the second port and obtain data of switches included in the second domain from the another switch included in the first domain to identify, from among the ports, plural ports that are connected to the second domain, perform a setting for the identified plural ports, and perform a first processing to make plural domains that include the first and second domains a tree structure.

Switch and switch system for enabling paths between domains

A disclosed switch includes: a first applying unit that applies a setting of a virtual subnetwork to a first port that is connected to an external apparatus, upon detecting an instruction to apply the setting to the first port; and a second applying unit that applies, upon detecting that the setting was applied to the first port in the switch or other switches, the setting to a second port that is connected to an external network and is associated with the first port in advance.

An address translation device includes a receiver that receives a packet that is from a communication apparatus on a private network to a communication apparatus on a global network; an address determiner that determines whether a destination address of a first packet received by the receiver matches a destination address of a second packet that was received before the first packet; a translator that when the address determiner makes a determination of no matching, translates a source private address of the first packet to a source global address that has been allocated to the second packet; and a transmitter that transmits the first packet that has been translated by the translator.

Address translation device, address translation method, and computer product

By referring to a receiving connection information table stored in a memory, a receiving assignment CPU assigns packets to parallel processing CPUs in such a manner that the packets received from the same connection are subjected to a receiving process by a corresponding parallel processing CPU. Each parallel processing CPU identifies the input QoS of a packet and notifies a QoS processing CPU, corresponding to that identified input QoS, of the packet. Each QoS processing CPU is arranged so that it corresponds to a QoS processing queue group in the memory and performs a QoS process on this QoS processing queue group.

Packet processing apparatus

Information (service information) about service contents provided by servers is registered or updated by each of routing nodes by exchanging said information through use of a routing protocol used in controlling a path among the routing nodes. The routing node selectively changes address information about a service access request on the basis of the service information owned by the routing node, to thus route the service access request to an optimal destination. Thereby, concentration of load to a specific service can be efficiently dispersed.

Method for optimally routing specific service in network, and server and routing node used in the network

In a network of a variable length packet system, a bps calculator colors an inputted packet based on a peak bandwidth or a committed bandwidth of a data bit number per unit time for every flow and a packet length of the inputted packet, a pps calculator colors the inputted packet based on a peak bandwidth or a committed bandwidth of a packet number per unit time for every flow and a packet number of the inputted packet, and one of a color of packet to be discarded, a color of packet to be passed and a color of packet to be discarded with a probability, within the colors obtained by colorings at both calculators is determined by a color selector.

Packet relaying method and device

A communication apparatus to be used between first and second communication groups, each including one or more communication terminals, that perform communications by different types of communication protocols capable of embedding address information, comprises a first storage unit storing a destination address, and tunnel identification information for the first communication group when a packet transmitted from the second communication group is registered; a destination retrieval unit which determines whether a destination address extracted from the received packet is registered in the first storage unit; a second storage unit, storing information indicating whether the route designated by the tunnel identification information is constructible by a private address or by a global address; an encapsulation processing unit which extracts the address information for the first communication group from the destination address; and a control unit controlling whether the encapsulation is to be in accordance with the information of the second storage unit.

Communication apparatus

A network system comprising a transmission medium coupling a plurality of devices on the network, a plurality of relay devices connected to the transmission medium, each relay device operable to apply filtering on data from the network and transmits frames, each relay device comprising command process division operable to generate and parse commands that include filtering information relating the sharing of filtering information on the network, and when filtering sharing conditions are applied, register filtering information on its own device and apply a protocol to relay to an adjacent device if filtering information sent from an adjacent device through the filtering sharing conditions has a destination address, if a port that received the filtering information from the adjacent matches a relay destination port of the destination address, and if there is only one relay destination port for the destination address, register a receiving port of the filtering information as a destination port, if there is no destination address information in the filtering information sent from the adjacent device through the filtering sharing conditions, and a filtering information sharing protocol division operable to apply a protocol so that filtering information is not relayed to an adjacent device, and a filtering division operable to relay filtering information and frames, or filters discarded information, based on instruction from the filtering information sharing protocol division.

Network system with shared filtering information

The invention relates to a content-addressable memory. An object of the invention is to make the content-addressable memory adaptable to various apparatuses and systems having different configurations without substantially altering the basic configuration thereof. The content-addressable memory includes a storage section having a plurality of storage areas for storing respective plural pieces of information; an ancillary storage section having a plurality of ancillary storage areas that correspond to the plurality of storage areas and store priority ranks that are assigned to the respective plurality of storage areas; and a controlling section for outputting, when at least one of the storage areas stores therein information matching with an externally supplied word, pointers of all or part of the at least one of the storage areas in descending order of priority ranks that are stored in ancillary storage areas corresponding to the at least one of storage areas.

Content-addressable memory adaptable to various apparatuses and systems having different configurations

A queue control method used in a relay apparatus which includes a plurality of ports for sending and receiving and performs relay of flows between networks is provided, in which the queue control method includes the steps of: performing queue control in which queue control parts which are connected to one or more ports enqueue flows from the one or more ports to a plurality of queues each having different priority, and dequeue the flows; switching flows dequeued from the queue control parts and sending the flows dequeued from the queue control parts from the ports; and sending and receiving control signals between the queue control parts such that queue control for arbitrary queue in the queue control parts is performed.

Queue control method and relay apparatus using the method

Data stored in a memory of an associative memory device is input therein as a key. The memory includes entries divided logically in a plurality of groups. The associative memory device returns an address at which the key is stored. In this course, upon one search instruction, at least one of the groups of the entries are designated to be searched so that search results of the groups are returned successively.

Growing community of inventors

Kawasaki, Japan

Daisuke Namihira