87 results about "Data Link Control" patented technology

The invention discloses a method for accessing a user end to next generation network, the method comprises the following steps: hypothesizing a U interface card into an Ethernet network card, receiving Ethernet frame which is transferred from a TCP / IP protocol layer, step S104, removing Ethernet frame head and exchanging the Ethernet frame head into an IP data packet, and analyzing IP data packet types, step S106, accessing getaway and receiving data packet from high-grade data link control 2B+D channel, checking the IP data packet, exchanging network address for the IP data packet which is checked, and step S 108, packing the exchanged IP data packet into an Ethernet frame format and sending to soft exchanging core network server. The invention also discloses a system which accesses a user side to a next generation network. The invention achieves the safe and stable transmission of information in different networks under the circumstance without needing to modify any user end application program which is based on TCP / IP communication, which reduces the probability of core switching network service period which is attacked, and lowers complexity of important customer system network building.

A system, method and computer program product are provided for correlating request packets and reply packets during network analysis. Initially, first information is monitored associated with at least one layer of a request packet that resides above a data link control layer thereof. Further monitored is second information associated with at least one layer of a reply packet that resides above the data link control layer thereof. The request packet and the reply packet are then correlated utilizing the first information and the second information. A network is then analyzed based on the correlated request packet and reply packet.

This invention relates to a kind of device of realizing high-level data link control. It includes: bus interface module that has outer interactive function through advanced high-performance bus, HDLC processing lane that connects with stated bus interface module. The stated HDLC processing lane includes core processing module and core control module, the stated core control module controls core processing module according to peripherals DMA request and reads data form peripherals to have HDLC processing through bus interface module. After the completion of core processing module handle, it informs related peripherals or CPU to read the completed data. This invention also provides a corresponding high-level data link control method. Through the providing DMA data movement function in the HDLC processing of this invention, it reduces CPU load and saves CPU processing resource.

The invention relates to a DLC (Data Link Control) optical fiber connector assembly and a plug thereof. The outer circumferential surface of an inner shell of the plug is provided with an elastic jaw which faces to the front end and is provided with a locking block at the front end head, a DLC plug module can be slidably arranged in an inner hole of the inner shell through a fixed plate fixed on the DLC plug module, the front end face of the fixed plate is in blocking matching with an inner convex baffle plate of the inner shell, the rear end face of the fixed plate is in elastic matching with a blocking step surface at the rear end of the inner shell through a thrust spring, an outer shell is sleeved on the periphery of the inner shell, the locking block of the elastic jaw is arranged in a locking hole of the outer shell and protrudes out of the outer circumferential surface of the outer shell, the front end of the inner hole of the inner shell is provided with a strip-shaped tongue piece arranged along the axle line of the inner shell, the outer surface of the strip-shaped tongue piece is attached on the wall of the inner hole of the inner shell, the inner surface of the strip-shaped tongue piece is used for pushing a duplexing clamp of the DLC plug, the strip-shaped tongue piece is fixedly arranged on the outer shell through the front end thereof, and the circumferential surface of the inner hole of the inner shell is provided with a pushing step for pushing the strip-shaped tongue piece to face to the front end when the outer shell drives the strip-shaped tongue piece to move backwards at the rear end head of the strip-shaped tongue piece.