626 results about "Address pool" patented technology

The use of IP address blocks with default interfaces in a router is described herein. According to one embodiment, an exemplary method includes in response to a request for a first IP address received from a first client at an interface of the network element, assigning the first client an IP address from a first block of IP addresses dynamically allocated from an IP address provider separated from a pool of statically preassigned IP addresses, if there is no IP address remained unassigned in the pool of statically preassigned IP addresses, and advertising reachability information in a network with respect to the first block of the IP addresses dynamically allocated from the IP address provider, such that other entities of the network are aware of the first block of the IP addresses. Other methods and apparatuses are also described.

A method for on-demand management of Internet Protocol (IP) address pools includes allocating an unused IP address from a local IP address pool designated for a remote domain if a request to connect to the remote domain is received and deallocating an IP address back to the local IP address pool if the IP address is unused. The method also includes apportioning one or more of the at least one subnet between the global IP address pool and the local IP address pool based upon utilization of the local IP address pool. The local IP address pool includes one or more of at least one subnet obtained from a global IP address pool and each subnet specifies a contiguous set of one or more IP addresses.

An apparatus for encoding videos having a central processing unit and a memory, coupled to the central processing unit, is provided. The memory has an Internet protocol (IP) address pool having IP addresses and a video encoding module. The video encoding module has instructions for obtaining a video source having a plurality of sequential frames. The video encoding module further has instructions for assigning select frames in the plurality of sequential frames with at least one IP address from the IP address pool, thereby forming an encoded video containing at least one embedded IP address. The video encoding module further has instructions for removing the at least one IP address from the IP address pool that is in the encoded video and instructions for storing the encoded video.

A method for managing Internet Protocol (IP) addresses on a data communications network includes allocating multiple local IP address pools, requesting IP address usage data from one or more of the network edge devices, receiving the requested IP address usage data, determining whether the local IP address pools should be reallocated based upon the requested IP address usage data, reallocating one or more of the local IP address pools based upon the determination and updating one or more of the local IP address pool databases and a global IP pool database based upon the reallocating. Each of the local IP address pools is associated with a different network edge device that is capable of accepting connection requests requiring an IP address. The global IP address pool database includes the information maintained in each local IP address pool. A network edge device capable of managing IP addresses on a data communications network includes an allocator capable of allocating multiple local IP address pools, a receiver capable of receiving a communication, an allocator capable of allocating an available IP address from the local IP address pool if the communication includes a connection request, a determiner capable of determining whether the local IP address pool should be adjusted, a notifier capable of sending an alarm message to an IP pool manager when the IP address pool should be adjusted and a memory capable of storing an IP address allocation when the communication includes an IP address allocation.

A technique implements a MAC address pool containing a plurality of unique MAC addresses adapted for assignment to a virtual interface or aggregate of a server in a computer network. The MAC address pool is created from original MAC addresses assigned to physical interfaces of a network interface card (NIC) that is used in the server. The physical interfaces and their underlying physical links are organized as the aggregate. Upon system initialization, a virtual interface process of the server collects the originally assigned MAC addresses of the NIC, modifies them and organizes them as a pool. Each originally assigned MAC address is modified by asserting its locally administered bit. Each modified MAC address is a distinct MAC address that does not conflict with other MAC addresses within, e.g., a local area network of the computer network.

A method for on-demand management of Internet Protocol (IP) address pools includes allocating an unused IP address from a local IP address pool designated for a remote domain if a request to connect to the remote domain is received and deallocating an IP address if the IP address is released. The local IP address pool includes at least one subnet dynamically assigned from a global IP address pool. Each of the subnets specifies a contiguous set of one or more IP addresses. IP addresses are allocated using a first-assigned-subnet-first policy, wherein an IP address is allocated from a least recently assigned subnet having at least one unallocated IP address. According to one aspect, subnets are deassigned using a last-assigned-subnet-first policy, wherein the deassigned subnet is the most recently assigned subnet having no allocated IP addresses.

The present invention relates to methods and a system for enhancing DHCP to promote a more secure IP address allocation model. The invention advantageously accomplishes this through the utilization of an address generator which is compatible with the existing DHCP protocol, and which incorporates an algorithm for use in producing a selected IP address as one of a sub-set of allocable addresses that are non-sequentially distributed within an address pool. As such, the invention offers robust security and allows for the rapid detection of unauthorized activity such as network intrusion, worms, virus propagation, network scanners, and SPAM.

A home agent provides mobility transparent communications to a mobile node temporarily connected to a second network as a mobile destination different from a first network normally utilized. The home agent includes a module receiving a new registration request from the mobile node via the second network, a module detecting, when receiving the new registration request, that lease addresses of a DHCP server and addresses pooled beforehand are all occupied, and a module searching for, when detecting that all the addresses are occupied, an address on the basis of self-managed information and allocating the searched address to the mobile node.

The invention discloses a method for DHCP (dynamic host configuration protocol) relay to request IP address for DHCP client end, comprising: A. DHCP relay receives configuration request message sent by DHCP client end by broadcast, and adds above one gateway IP address or network segment address to the configuration request message and then sends the message to DHCP server; B. DHCP server determines gateway IP address or network segment address of the subnetwork the DHCP client end belongs to, by the added gateway IP address or network segment address in the request message, and allocates an IP address in a corresponding address pool to the determined gateway IP address or network segment address to the DHCP client end and transmits the allocated IP address through the DHCP relay to the DHCP client end. And the method only requires the DHCP relay and DHCP server make one communication interaction in the course that the DHCP client end obtains dynamic allocated IP address by DHCP relay, saving time and raising efficiency.

The use of IP address blocks with default interfaces in a router is described herein. According to one embodiment, an exemplary method includes in response to a request for a first IP address received from a first client at an interface of the network element, assigning the first client an IP address from a first block of IP addresses dynamically allocated from an IP address provider separated from a pool of statically preassigned IP addresses, if there is no IP address remained unassigned in the pool of statically preassigned IP addresses, and advertising reachability information in a network with respect to the first block of the IP addresses dynamically allocated from the IP address provider, such that other entities of the network are aware of the first block of the IP addresses. Other methods and apparatuses are also described.

The method includes steps: (1) sorting IP addresses in IP address pool, building mapping relation between each IP address type and information of user at client end of Dynamic Host Configuration Protocol (DHCP); (2) sending information of user at client end of DHCP bound on message of DHCP request to DHCP server; (3) obtaining the information of user, DHCP server finds a usable IP address from IP address type possessing the mapping relation with the information of user and assigns it to client end of DHCP. Thus, the invention optimizes dynamic allocated IP addresses.

The invention discloses a method and system for allocating IP addresses to containers and relates to the technical field of computers. According to one specific embodiment of the invention, the methodcomprises the following steps: establishing a one-to-one corresponding relation between a part of IP addresses in a total address pool and corresponding containers according to a first allocation requirement; when a request for allocating an IP address is received, judging whether a container whose IP address is to be allocated has a binding relation with a certain IP address; if so, allocatingthe IP address bound with the container whose IP address is to be allocated to the container; and otherwise, allocating an unbound IP address in the total address pool to the container whose IP address is to be allocated. According to the embodiment of the invention, the IP address and the container can be bound such that it can be guaranteed that the IP address is not changed when the container is restarted or migrated, and it is guaranteed that the service is not interrupted.

The invention provides a distributed file system data volume deployment method based on a virtual address pool. A node cluster or a sub-cluster is built according to different node roles of metadata nodes, data storage nodes and client side nodes in a distributed file system; a data storage volume is deployed in a mode based on the virtual IP address pool on a data node cluster to separate the deployment of a distributed file system data storage volume from physical addresses of data nodes so as to combine the deployment of the data storage volume with virtual addresses of the data node cluster; a monitoring module is deployed on an operating node of the distributed file system so as to realize real-time monitoring of the operating conditions of the node and a load; according to the conditions of the node and the load, a virtual IP borne by any node and the data storage volume mounted on one virtual address are transferred in real time in the data node cluster; meanwhile, a failure of a physical node is also isolated, so that the effect that data services of the data storage volume are not interrupted when the physical node is maintained is ensured.

An access network system connected to an ISP network including a subscriber authentication server comprised of a plurality of packet forwarding apparatuses each for connecting user terminals to an Internet network via the ISP network and an address pool management server having an address pool management table for holding, as a sub-address pool, a plurality of IP addresses usable over the ISP network. Each of the packet forwarding apparatuses acquires from the address pool management server an IP address to be allocated to the user terminal having requested connection to the Internet when the subscriber authentication server has succeeded in authentication of the user terminal.

The present invention discloses method and system of self-adapting distribute of NAT address pool under distributed structure, and is suitable for distributed processing structure which is made up of master control board, more than one service plate and interface plate. The method includes: NAT resource item composed of paired public net IP and terminal port is unified managed in master control board, including lie idle NAT resource item and NAT resource item distributed to each service plate; master control board executes primary distribution from lie idle NAT resource item to corresponding service plate according to demand of each service plate; service plate executes secondary allocation from master control board allocated NAT resource item to processed message flow. In better embodiment, NAT resource item is management at different grades with resource blocks form: master control board executes distribution of NAT resource blocks, service plate executes distribution of NAT resource item. The present invention realizes full utilization of NAT resource, avoiding quintuple conflict after converting and having better flexibility and adaptability.

A system and method for assigning IP addresses in an Ethernet passive optical network which includes one OLT (Optical Line Terminal) and a plurality of ONTs (Optical Network Terminals) connected to the OLT are disclosed. The method includes the steps of including a dynamic host configuration protocol (DHCP) server in the OLT, establishing IP address pools including at least one IP address according to the ONTs, and searching for an ONT from a MAC processing section of the OLT by means of a MAC address from which IP address assignment is requested when IP address assignment is requested from one of the ONTs. The ONT is connected to a DHCP client. The DHCP server assigns an available IP address existing in an IP address pool established for the ONT having requested the IP address assignment according to ONTs.

The invention discloses a hot backup method of an NAT service converted by a network address and equipment. NAT session information in the equipment is screened, backup is carried out only on the NAT session information which conforms to conditions; if the addresses of the NAT equipment in a public network address pool are more, the quantity of the NAT session information needing backup is less, so that the performance of the newly established session on the NAT device is not influenced, and many-for-one backup can be realized.

An auto-allocation method of addresses of mobile ad hoc networks adopts an IP address stratified allocation mode based on neighbour proxy collision-free detection, address allocation information is provided with hereditary property; usable IP address control word which can become long is adopted to control the process of IP address allocation; the method comprises mobile ad hoc network address initialization configuration, an IP address auto-allocation protocol, an IP address allocation control process, an IP address trunking protocol, an IP address pool recover protocol, network merger and transformation and network partitioning and transformation; the invention adopts the IP address stratified allocation mode based on neighbour proxy collision-free detection, the address allocation information is provided with hereditary property, the usable IP address control word which can become long is adopted to flexibly control the allocation process of IP address space, thus effectively avoiding address allocation conflict, dispensing with address conflict detection, improving address allocation efficiency, reducing use of multicast or broadcast message in the process of address allocation, lowering resource consumption, and being applicable to allocation of IP addresses of multiple versions.

A method to implement an address pool is described. The method collects at least one address, the at least one address originally assigned as a unique address to at least one physical interface of a computer. Each originally assigned address is modified to be a plurality of modified addresses. The plurality of modified addresses is organized as an address pool. A selected modified address from the pool is assigned as a unique address for the pool. The selected modified address is used in contacting the computer in response to receiving a message addressed to an address of the pool.

The invention provides a method and system for controlling the user network access authority, including the presetting phase: the corresponding relationship between the network equipment configuration address portion and the network access authority; the corresponding relationship between the combination configured unique user equipment identifier for RADIUS server and DHCP server and address pool information. After the user authentication, IP address allocation phase for dynamic address request and network access authority selection, controlling of user network access authority: the DHCP server and RADIUS server may get the address pool information according to the unique identifier of user equipment and return to the user equipment, the user equipment may get the network access authority for corresponding network equipment configuration according to this address pool information. With the invention, directly control during the authentication, and dynamic address acquisition, simply and effectively realize the network access authority control for different user authenticated, simplify the dependency for network equipment.

The invention provides a method for address allocation of public networks, which comprises that a carrier-grade network (CGN) address translation device receives online messages of users and judges whether idle public network addresses exist in a public network address pool; if no idle public network address exists in the public network address pool or the quantity of the idle public network addresses is less than that of a presupposed threshold value of the idle public network addresses, the CGN device constructs and sends dynamic host configuration protocol (DHCP) requests to a DHCP server to apply for a public network address set; and the CGN device allocates a first public network address in the public network address set to the users. The invention further discloses a device and system for address allocation of public networks. According to the method, the device and a system for address allocation of public networks, unified management and allocation of public network addresses of the CGN device can be achieved and the utilization rate of the public network addresses of the CGN device can be improved so as to avoid waste of public network addresses.

A method for implementing redundancy backup between Network Address Translation (NAT) devices includes: an Internet Protocol version 4 (IPv4) address pool and a prefix64 are pre-configured on at least two NAT devices, where the prefix is used to map an IPv4 address to an Internet Protocol version 6 (IPv6) address; the master NAT device advertises in an IPv6 network a route corresponding to the prefix, and advertises in an IPv4 network a route corresponding to the IPv4 address pool; and the slave NAT device processes a packet between a source host and a destination host when the master NAT device fails, where the source host and the destination host are located in different Internet Protocol (IP) networks. With the technical solutions of the present invention, redundancy backup is implemented between multiple NAT devices to improve reliability of networking of NAT devices.

A method to obtain Internet protocol address by the User on the network through point to point protocol includes sending internal information message of distributing IP address request to DHCP junction module which simulates out IP address request message in DHCP form for the User as per abovesaid message and to send it to DHCP server which distributes on IP address according to the received content of IP address request message and to give out additional information of the address, informing the IP address and additional information to the user through DHCP junction module. The method can make the User on network through PPP and VLAN obtain IP address through DHCP server.

In a communications system having a plurality of endpoints each including a logical entity and its physical counterpart, a method for managing a pool of multicast addresses. The method including the steps of: generating a pool of available multicast addresses; receiving a request for a multicast address; allocating a multicast address for usage subject to at least a first limitation; monitoring the usage of the allocated multicast address; and reclaiming the allocated multicast address if as a function of the monitoring it is detected that a first condition is met, and causing the allocated multicast address to be placed into the pool of available multicast addresses.

The invention discloses a method and device for distributing network addresses and belongs to the field of internet. The method disclosed by the invention comprises the following steps: receiving the address distribution request of user equipment; obtaining the spare network address from an address pool according to the address distribution request and the address pool mapping relation which is locally stored, wherein the address pool mapping relation comprises the address pool and at least one subaddress pool contained in the address pool; and distributing the spare network address to the user equipment. The device disclosed by the invention comprises a receiving module, an acquisition module and a distribution module. In the invention, the network addresses is distributed for the user equipment according to the address pool mapping relation which is locally stored by virtue of changing the existing address distribution procedure when the address distribution request is received, thereby achieving the purpose of distributing the address for the user equipment with pertinency, improving the distribution efficiency and meeting the requirements in the actual application of a client better.

The invention provides an address allocation processing method, device and system. The method comprises the following steps: a first BRAS (broadband remote access server) receives a DHCP (dynamic host configuration protocol) relay message sent by the a second BRAS, wherein the DHCP relay message comprises a gateway IP (internet protocol) address and response information based on a source IP address; the first BRAS analyzes the DHCP relay message to obtain the gateway IP address, and allocates an idle IP address from the obtained address pool which is matched with the gateway IP address; and the first BRAS encapsulates the source IP address in the DHCP relay message in a target IP address in a response message based on the response information of the source IP address, loads the idle IP address in the encapsulated response message, and sends the encapsulated response message loaded with the idle IP address to the second BRAS. By the address allocation processing method, device and system provided by the invention, the address waste phenomenon existing in the process that a BRAS adopts a built-in DHCP server to allocate IP addresses under a double-machine hot backup scene in the prior art is eliminated.

The invention provides a network address distributing method, a DHCP server, an access system and a method thereof, relating to the technical field of data communication. A network address distributing method comprises the steps: receiving a DHCP discovery report transmitted from a service terminal, wherein the discovery report comprises the service identification of the service type requested bythe service terminal; searching an unoccupied ID address corresponding to the service identification in an address pool, wherein the IP address in the address pool comprises status attributes respectively corresponding to the different service types, and the status attributes comprise the unoccupied or the occupied attributes; and transmitting the searched unoccupied ID address to the service terminal through a DHCP proposal report. The invention realizes the repeat use of the same IP address for the different service types, saves address expenditure, and relieves the increasing tensional address use condition.

The invention discloses an IPv4 and IPv6 network interconnection method based on an SDN. A domain name resolution module, an address switch module, a translation module, a map module, a topology management module, and a temporary address pool management module are referred in the process of executing the method; the domain name resolution module is a core module and used for processing a DNS request; the address switch module switches an IPv4 address to an IPv6 address and is used for being called by the domain name resolution module; the translation module is used for mutually translating an IPv4 message and an IPv6 message and comprises an IP masthead, an ICMP message and the translation of TCP / UDP messages; the map module is used for maintaining a mapping table of domain names and IP address and storing the mapping relation between the domain names and an IPv4 address and an IPv6 address; the topology management module is used for maintaining global topology of the internet; the temporary address pool management module is used for distributing and recycling the IPv4 address temporarily. By means of the method, the problems of protocol switching and address mapping are solved, and the interconnection and interworking of the internet is achieved.