Abstract: Embodiments of this application provide a method and an apparatus for determining virtual machine VM migration. The method includes: after a VM is migrated, sending a gratuitous ARP packet or a RARP packet to an in-migration VTEP device; obtaining, by the VTEP device, a MAC address of the VM, searching an ARP cache table based on the MAC address, and obtaining an IP address of the VM; and constructing an ARP unicast request packet by using the IP address as a destination IP address, and if the VTEP device receives an ARP response packet sent by the VM for the ARP unicast request packet, determining that the VM is migrated.

Abstract: A packet processing method, a device, and a packet processing system are provided. The method includes: generating, by a VTEP device at one end of a VXLAN tunnel, a PPP over VXLAN packet that carries control information, and transmitting the PPP over VXLAN packet to a VTEP device at the other end of the VXLAN tunnel by using the VXLAN tunnel. The VTEP device at the other end of the VXLAN tunnel may perform, based on the control information in the PPP over VXLAN packet, a function defined in PPP. In this way, a VXLAN control plane is implemented by using the PPP, and overheads and complexity of implementing the VXLAN control plane are reduced.

Abstract: Embodiments of this application provide a method and an apparatus for determining virtual machine VM migration. The method includes: after a VM is migrated, sending a gratuitous ARP packet or a RARP packet to an in-migration VTEP device; obtaining, by the VTEP device, a MAC address of the VM, searching an ARP cache table based on the MAC address, and obtaining an IP address of the VM; and constructing an ARP unicast request packet by using the IP address as a destination IP address, and if the VTEP device receives an ARP response packet sent by the VM for the ARP unicast request packet, determining that the VM is migrated.

Abstract: Embodiments of this application provide a method and an apparatus for determining virtual machine VM migration. The method includes: after a VM is migrated, sending a gratuitous ARP packet or a RARP packet to an in-migration VTEP device; obtaining, by the VTEP device, a MAC address of the VM, searching an ARP cache table based on the MAC address, and obtaining an IP address of the VM; and constructing an ARP unicast request packet by using the IP address as a destination IP address, and if the VTEP device receives an ARP response packet sent by the VM for the ARP unicast request packet, determining that the VM is migrated.

Abstract: A packet processing method, a device, and a packet processing system are provided. The method includes: generating, by a VTEP device at one end of a VXLAN tunnel, a PPP over VXLAN packet that carries control information, and transmitting the PPP over VXLAN packet to a VTEP device at the other end of the VXLAN tunnel by using the VXLAN tunnel. The VTEP device at the other end of the VXLAN tunnel may perform, based on the control information in the PPP over VXLAN packet, a function defined in PPP. In this way, a VXLAN control plane is implemented by using the PPP, and overheads and complexity of implementing the VXLAN control plane are reduced.

Abstract: The present invention discloses a method, routing bridge, and system for sending a packet, which are applied to the field of communications technologies, and are invented to reduce a signaling overhead of a TRILL network. The method includes: receiving, by a first transit RB, a Nickname of an edge RB sent by a second transit RB; constructing, an address advertisement message, where the address advertisement message includes a virtual IP address and a virtual MAC address of the first transit RB; and sending, the address advertisement message to the edge RB according to the Nickname of the edge RB, so that the edge RB sends, after receiving the address advertisement message, a free ARP packet to a server that accesses the TRILL network through the edge RB, where the free ARP packet includes a correspondence between the virtual MAC address and the virtual IP address.

Abstract: Embodiments of the present invention disclose an integrated circuit and a method for monitoring a bus status in the integrated circuit. Multiple status detectors and a top layer monitor are disposed in the integrated circuit. Each status detector in the multiple status detectors is used to read status data on a branch bus that is coupled to each status detector in the multiple status detectors, and then the top layer monitor collects the status data from each status detector, and outputs the status data through an interface.

Abstract: The present invention discloses a method, routing bridge, and system for sending a packet, which are applied to the field of communications technologies, and are invented to reduce a signaling overhead of a TRILL network. The method includes: receiving, by a first transit RB, a Nickname of an edge RB sent by a second transit RB; constructing, an address advertisement message, where the address advertisement message includes a virtual IP address and a virtual MAC address of the first transit RB; and sending, the address advertisement message to the edge RB according to the Nickname of the edge RB, so that the edge RB sends, after receiving the address advertisement message, a free ARP packet to a server that accesses the TRILL network through the edge RB, where the free ARP packet includes a correspondence between the virtual MAC address and the virtual IP address.

Abstract: The present invention provides a method and an apparatus for detecting a synchronization position of an LTE cell. A part of sampling points are selected from all sampling points of received data, where the received data is generated by filtering a local sequence from a base station; correlation operations are carried out on the part of the sampling points, and multiple first correlation results and multiple pieces of first position information that correspond to the part of the sampling points are obtained; and a maximum first correlation result is determined among at least one first correlation result greater than a preset threshold in the multiple first correlation results, and a piece of first position information, which corresponds to the maximum first correlation result, is taken as a synchronization position.

Abstract: The present invention provides a method and an apparatus for detecting a synchronization position of an LTE cell. A part of sampling points are selected from all sampling points of received data, where the received data is generated by filtering a local sequence from a base station; correlation operations are carried out on the part of the sampling points, and multiple first correlation results and multiple pieces of first position information that correspond to the part of the sampling points are obtained; and a maximum first correlation result is determined among at least one first correlation result greater than a preset threshold in the multiple first correlation results, and a piece of first position information, which corresponds to the maximum first correlation result, is taken as a synchronization position.

Abstract: Embodiments of the present invention disclose an integrated circuit and a method for monitoring a bus status in the integrated circuit. Multiple status detectors and a top layer monitor are disposed in the integrated circuit. Each status detector in the multiple status detectors is used to read status data on a branch bus that is coupled to each status detector in the multiple status detectors, and then the top layer monitor collects the status data from each status detector, and outputs the status data through an interface.

Abstract: A method and a device for sending a packet based on Tunneling Protocol used in Layer 2 are provided. Specifically, when a traffic flow needs to be sent from a network side to a client via QinQ termination equipment in which the tunneling protocol used in Layer 2 is used, forwarding address information corresponding to the client is obtained by searching a Dynamic Host Configuration Protocol (DHCP) snooping binding table according to Internet Protocol (IP) address information of the client in a packet of the traffic flow. The packet of the traffic flow can be sent to the client according to the obtained forwarding address information.

Abstract: The invention discloses a method and device for image filtering in the field of communication technologies, the method including: acquiring image data of a pixel dot of a current row to be filtered and a corresponding pixel dot of at least one adjacent row; obtaining contrast information containing a transparency value, of the pixel dot of the current row and the pixel dot of the adjacent row respectively by resolving the image data of the pixel dot of the current row and the pixel dot of the adjacent row; generating a filter coefficient according to the transparency value of the pixel dot of the current row and the transparency value of the corresponding pixel dot of the adjacent row; and performing filtering on the pixel dot of the current row with the filter coefficient.

Abstract: A method and a device for sending a packet based on Tunneling Protocol used in Layer 2 are provided. Specifically, when a traffic flow needs to be sent from a network side to a client via QinQ termination equipment in which the tunneling protocol used in Layer 2 is used, forwarding address information corresponding to the client is obtained by searching a Dynamic Host Configuration Protocol (DHCP) snooping binding table according to Internet Protocol (IP) address information of the client in a packet of the traffic flow. The packet of the traffic flow can be sent to the client according to the obtained forwarding address information.

Abstract: The invention discloses a method and device for image filtering in the field of communication technologies, the method including: acquiring image data of a pixel dot of a current row to be filtered and a corresponding pixel dot of at least one adjacent row; obtaining contrast information containing a transparency value, of the pixel dot of the current row and the pixel dot of the adjacent row respectively by resolving the image data of the pixel dot of the current row and the pixel dot of the adjacent row; generating a filter coefficient according to the transparency value of the pixel dot of the current row and the transparency value of the corresponding pixel dot of the adjacent row; and performing filtering on the pixel dot of the current row with the filter coefficient.