Abstract: This invention specifies mechanisms for detection of failure of links directly attached to communication devices (hosts and gateways) or lying in the path between these devices. The invention also specifies mechanisms for recovering communication sessions when the failure occurs. The failure in a link connected to the host or to the gateway is detected by using a link layer trigger by the respective node while the gateway failure or failure in a remote link is detected by a signaling mechanism initiated by the host on the basis of two control timers, probe timer and keepalive timer. The edge router and gateway also assist the host to detect the failure and quickly start the recovery process. They perform packet redirection through a lively link to the host, thus reducing or completely avoiding packet losses while the host performs the recovery mechanism to transfer the session from the failed link to the lively link.

Abstract: This invention specifies mechanisms for detection of failure of links directly attached to communication devices (hosts and gateways) or lying in the path between these devices. The invention also specifies mechanisms for recovering communication sessions when the failure occurs. The failure in a link connected to the host or to the gateway is detected by using a link layer trigger by the respective node while the gateway failure or failure in a remote link is detected by a signaling mechanism initiated by the host on the basis of two control timers, probe timer and keepalive timer. The edge router and gateway also assist the host to detect the failure and quickly start the recovery process. They perform packet redirection through a lively link to the host, thus reducing or completely avoiding packet losses while the host performs the recovery mechanism to transfer the session from the failed link to the lively link.

Abstract: The invention provides a new system for internet security. The internet network system comprises a first Edge Network 11 that comprises a Source Host (SH) 12, a first gateway (GW) 13 and a Local Name Server (LNS) 14, a Logical Control network 21 which comprises a Domain Name Registry (DNR) 22 and a Host Name Registry (HNR) 23, a Target Host (TH) 31 in the first Edge Network 11 or in a second Edge Network 32 and a Global Transit Network 41 which includes Routers 42 to connect the first Edge Network 11, the Logical Control network 21; and the second Edge Network 32.

Abstract: The invention provides a new system for internet security. The internet network system comprises a first Edge Network 11 that comprises a Source Host (SH) 12, a first gateway (GW) 13 and a Local Name Server (LNS) 14, a Logical Control network 21 which comprises a Domain Name Registry (DNR) 22 and a Host Name Registry (HNR) 23, a Target Host (TH) 31 in the first Edge Network 11 or in a second Edge Network 32 and a Global Transit Network 41 which includes Routers 42 to connect the first Edge Network 11, the Logical Control network 21; and the second Edge Network 32.

Abstract: A home node and a destination node, which are specified by node identifiers, acquire locators thereof and mapping of the node identifiers and the locators, prior to communication, and they are transmitted after the address of a packet specified by the node identifier is rewritten by the locator at the time of communication. Because roles of the node identifier and the locator are separated, the communication method is suitable for mobile communication and multi-homing. In addition, the communication method makes it possible to reduce use amount of global addresses, and thus solve an address exhaustion problem.

Abstract: A home node and a destination node, which are specified by node identifiers, acquire locators thereof and mapping of the node identifiers and the locators, prior to communication, and they are transmitted after the address of a packet specified by the node identifier is rewritten by the locator at the time of communication. Because roles of the node identifier and the locator are separated, the communication method is suitable for mobile communication and multi-homing. In addition, the communication method makes it possible to reduce use amount of global addresses, and thus solve an address exhaustion problem.