Abstract: A rapid detection system for water and impurity of machine-harvested seed cotton in purchase link, including: a seed cotton large-impurity-cleaning device, a seed cotton sample case, a driving and transmission device, a cotton pressing device, an image collection and processing device, and a moisture regain rate detection device and a control cabinet. The seed cotton sample case consists of a positioning plate and a high light transmittance glass case, the weighing device consists of a weighing sensor, a pallet, and an electric push rod. The driving and transmission device consists of the rollers, the motor of conveyor belts and conveyor belts, the cotton pressing device consists of an electric push rod, a connecting rod, a connecting plate, and a high light transmittance glass plate. Said rapid detection system could realize the rapid detection to the impurity rate and moisture regain rate of the seed cotton.

Abstract: Disclosed is a rapid detection system for water and impurity of machine-harvested seed cotton in purchase link, including: a seed cotton large-impurity-cleaning device, a seed cotton sample case, a driving and transmission device, a cotton pressing device, an image collection and processing device, a moisture regain rate detection device and a control cabinet; the seed cotton sample case consists of a positioning plate and a high light transmittance glass case, the weighing device consists of a weighing sensor, a pallet, and an electric push rod; the driving and transmission device consists of the rollers, the motor of conveyor belts and conveyor belts, the cotton pressing device consists of an electric push rod, a connecting rod, a connecting plate, and a high light transmittance glass plate. Said rapid detection system could realize the rapid detection to the impurity rate and moisture regain rate of the seed cotton.

Abstract: The present invention provides a method for network service selection and authentication in an IPv6 access network, a scheme for stateless auto-configuration and devices thereof. A NSP Information option containing the IPv6 address of a NSP edge router and a NSP name is defined in RA messages. A NSSA Information option is defined in RS option fields. The present invention enables IPv6 stateless auto-configuration in an access network. The new NSP Information option, the way of “one time authentication per subscriber network per NSP” and the use of IPv6 routing header promote the efficiency of IPv6 stateless auto-configuration and reduce the NSP selection and authentication traffic. The present invention provides an efficient solution for network service selection and authentication without introducing any other message exchange between terminals and access nodes.

Abstract: Disclosed is a method for updating DNS of host in IPv6 stateless address auto-configuration, wherein an option is added in the RS message sent by a host and/or RA message sent by a router, said option including information for negotiation of updating DNS of host. Based on said information, the host negotiates with the router to determine whether the host or the router register, the mapping between the global address of the host and the full domain name of the host, to a DNS server, to complete updating the DNS of the host. This invention enables the host to correctly identify the matching relation between domain name suffix information and address prefix, and achieves the negotiation of updating DNS domain name between the host and the router. Since DNS updating is performed by a router instead of the host, the DNS updating would become simple and safe.

Abstract: The present invention relates to an IPv6-based access device, edge router and method for stainless address configuration for IPv6 user equipment in an Ethernet access network, wherein, the access device adds the relay agent ID indicating the access device itself and the relevant port identifier indicating the user equipment to a router solicitation message sent by the user equipment in the form of a newly defined option, and forwards the message to the relevant edge router; and the edge router configures a dedicated address prefix for the user equipment according to the relay agent ID and port identifier, combines the address prefix, the relay ID and the port identifier into a router response message, and sends the response message to the relevant access equipment indicated by the relay ID; the access device sends a router advertisement message only including the address prefix via the line port indicated by the port identifier to user equipment.

Abstract: The present invention discloses a method and device for detecting connectivity termination in an IPv6 access network based on a DHCP service model. The method for detecting connectivity termination according to the invention comprises the steps of: creating an entry of the subscriber connectivity cache list corresponding to the subscriber terminal in the access node when the IPv6 connectivity between the subscriber terminal and the access node is established successfully; querying the entry of the neighbor cache list corresponding to the subscriber terminal based on the polling time set in the entry of the subscriber connectivity cache list; deciding whether the connectivity of the subscriber terminal is normal based on the entry information corresponding to the subscriber terminal of the subscriber connectivity cache list and neighbor cache list; and performing termination processing on the connectivity of the subscriber terminal logging off abnormally.

Abstract: A method for configuring, in a preset node within an anycast group, non-preset nodes within the group and a control device therefor are provided. The method comprises: generating one or more address configuration messages based on the predetermined configuration address information; and sending to each of non-preset nodes within the anycast group the address configuration message corresponding to the non-preset node. A method for assistant configuration of non-preset nodes within an anycast group and an assistance control device therefor are also provided.

Abstract: The present invention provides a method and device for hierarchical configuration of domain name in IPv6 network. Said method comprises: a) negotiating a unique user network's name between a user and a network SP; b) a client terminal device at the user network side obtaining prefix of IPv6 network address and suffix of the user network's domain name by sessioning with a network access device, said suffix of the user network's domain name being consisting of the user network's name and suffix of the network SP's domain name; c) the network access device further informing the network SP's DNS server of establishing the resource record of said user network's domain name server; d) said client terminal device conducting the address configuration and providing domain name service for hosts at the user network side according to the obtained prefix of IPv6 network address and suffix of the user network's domain name.

Abstract: It is an object of the present invention to provide a new technical solution of supporting special secure communication between user equipment which is located in an external network and an private network the user equipment belongs to. Specifically, transmitted data is encrypted/decrypted and authenticated by using pre-stored root keys corresponding to specific private networks and the agreed encryption/decryption and authentication algorithm at the user equipment and an access device. The manner of generating the encryption/decryption keys and authentication key is simplified, and the complexity of the access device at the private network end is reduced on the premise of not degrading the security grade. The technical solution of the present invention is highly flexible and extensible and can achieve better user experience.

Abstract: A method for configuring, in a preset node within an anycast group, non-preset nodes within the group and a control device therefor are provided. The method comprises: generating one or more address configuration messages based on the predetermined configuration address information; and sending to each of non-preset nodes within the anycast group the address configuration message corresponding to the non-preset node. A method for assistant configuration of non-preset nodes within an anycast group and an assistance control device therefor are also provided.

Abstract: Disclosed is a method for updating DNS of host in IPv6 stateless address auto-configuration, wherein an option is added in the RS message sent by a host and/or RA message sent by a router, said option including information for negotiation of updating DNS of host. Based on said information, the host negotiates with the router to determine whether the host or the router register, the mapping between the global address of the host and the full domain name of the host, to a DNS server, to complete updating the DNS of the host. This invention enables the host to correctly identify the matching relation between domain name suffix information and address prefix, and achieves the negotiation of updating DNS domain name between the host and the router. Since DNS updating is performed by a router instead of the host, the DNS updating would become simple and safe.

Abstract: The present invention provides a method and device for hierarchical configuration of domain name in IPv6 network. Said method comprises: a) negotiating a unique user network's name between a user and a network SP; b) a client terminal device at the user network side obtaining prefix of IPv6 network address and suffix of the user network's domain name by sessioning with a network access device, said suffix of the user network's domain name being consisting of the user network's name and suffix of the network SP's domain name; c) the network access device further informing the network SP's DNS server of establishing the resource record of said user network's domain name server; d) said client terminal device conducting the address configuration and providing domain name service for hosts at the user network side according to the obtained prefix of IPv6 network address and suffix of the user network's domain name.

Abstract: The present invention relates to an IPv6-based access device, edge router and method for stainless address configuration for IPv6 user equipment in an Ethernet access network, wherein, the access device adds the relay agent ID indicating the access device itself and the relevant port identifier indicating the user equipment to a router solicitation message sent by the user equipment in the form of a newly defined option, and forwards the message to the relevant edge router; and the edge router configures a dedicated address prefix for the user equipment according to the relay agent ID and port identifier, combines the address prefix, the relay ID and the port identifier into a router response message, and sends the response message to the relevant access equipment indicated by the relay ID; the access device sends a router advertisement message only including the address prefix via the line port indicated by the port identifier to user equipment.

Abstract: It is an object of the present invention to provide a new technical solution of supporting special secure communication between user equipment which is located in an external network and an private network the user equipment belongs to. Specifically, transmitted data is encrypted/decrypted and authenticated by using pre-stored root keys corresponding to specific private networks and the agreed encryption/decryption and authentication algorithm at the user equipment and an access device. The manner of generating the encryption/decryption keys and authentication key is simplified, and the complexity of the access device at the private network end is reduced on the premise of not degrading the security grade. The technical solution of the present invention is highly flexible and extensible and can achieve better user experience.

Abstract: The present invention provides a method for network service selection and authentication in an IPv6 access network, a scheme for stateless auto-configuration and devices thereof. A NSP Information option containing the IPv6 address of a NSP edge router and a NSP name is defined in RA messages. A NSSA Information option is defined in RS option fields. The present invention enables IPv6 stateless auto-configuration in an access network. The new NSP Information option, the way of “one time authentication per subscriber network per NSP” and the use of IPv6 routing header promote the efficiency of IPv6 stateless auto-configuration and reduce the NSP selection and authentication traffic. The present invention provides an efficient solution for network service selection and authentication without introducing any other message exchange between terminals and access nodes.

Abstract: The present invention discloses a method and device for detecting connectivity termination in an IPv6 access network based on a DHCP service model. The method for detecting connectivity termination according to the invention comprises the steps of: creating an entry of the subscriber connectivity cache list corresponding to the subscriber terminal in the access node when the IPv6 connectivity between the subscriber terminal and the access node is established successfully; querying the entry of the neighbor cache list corresponding to the subscriber terminal based on the polling time set in the entry of the subscriber connectivity cache list; deciding whether the connectivity of the subscriber terminal is normal based on the entry information corresponding to the subscriber terminal of the subscriber connectivity cache list and neighbor cache list; and performing termination processing on the connectivity of the subscriber terminal logging off abnormally.

Abstract: The present invention discloses a method of selecting services provided by different NSPs in an access network, the access network comprises a subscriber terminal and a broadband access equipment, the method includes the steps of: setting up a session between said subscriber terminal and said broadband access equipment to determine an appropriate NSP; sending a data packet to said broadband access equipment by said subscriber terminal; and after receiving said data packet, searching for the route of said data packet based on said determined NSP and forwarding said data packet according to the found route by said broadband access equipment.

Abstract: The present invention provides a network address translation method and apparatus thereof. The method and apparatus only requires one IPv4 public address when IPv6 devices in an IPv4 private network communicate with IPv6 devices in a remote network by taking an one-to-one correspondence mapping relationship between IPv4 private addresses and IPv6 addresses. The present invention is simple and greatly reduces occupation of the IPv4 public addresses.