A system compares two network security specifications expected to implement the same network security policy for a network and identifies possible discrepancies between them. The system generates a representation of relations between subnetworks of the network for each network security specification. The representation efficiently stores permitted connections between subnetworks. The system compares the representations corresponding to the two network security specifications to identify discrepancies across the two network security specifications. If discrepancies are identified across the two network security specifications the system generating a report identifying the discrepancies.

A system compares two network security specifications expected to implement the same network security policy for a network and identifies possible discrepancies between them. The system generates a representation of relations between subnetworks of the network for each network security specification. The representation efficiently stores permitted connections between subnetworks. The system compares the representations corresponding to the two network security specifications to identify discrepancies across the two network security specifications. If discrepancies are identified across the two network security specifications the system generating a report identifying the discrepancies.

The present invention has an object to provide an uplink band allocation apparatus and an uplink band allocation method that are capable of setting an uplink band of a PON in accordance with an application.

The uplink band allocation apparatus and method according to the present invention collect not only the amount of the data accumulated in an ONU but also the information of the application (application information) used on a terminal apparatus. Then, the uplink band allocation apparatus and method according to the present invention reflect, on a DBA conducted by the OLT, information of a band and a delay (band delay information) that have been calculated by an application information acquisition server from the application information and that are demanded by the application.

According to an aspect, there is provided a method for determining a sequence of bus nodes in a multi-drop communication bus. The method includes for each bus node: sending a request to the bus node using an bus node physical identifier to set the bus node to a loopback mode; transmitting at least one signal to the bus node via the multi-drop communication bus; receiving from the bus node a loopback signal caused by the at least one signal; and measuring a roundtrip delay between the at least one signal and the loopback response signal. The method further includes solving the physical order of the bus nodes in the multi-drop communication bus based on the roundtrip delays.

Systems, methods, and instrumentalities are disclosed for switching a control scheme to control a set of system modules and/or modular devices of a surgical hub. A surgical hub may determine a first control scheme that is configured to control a set of system modules and/or modular devices. The surgical hub may receive an input from one of the set of modules or a device located in an OR. The surgical hub may make a determination that at least one of a safety status level or an overload status level of the surgical hub is higher than its threshold value. Based on at least the received input and the determination, the surgical hub may determine a second control scheme to be used to control the set of system modules. The surgical hub may send a control program indicating the second control scheme to one or more system modules and/or modular devices.

A physical layer (PHY) device of a switch system of a computing network, a switch system including the PHY device, a tangible non-transitory machine-readable medium to perform operations at the PHY device, and a method to be performed at the PHY device. The PHY device includes a first physical input/output (I/O), and a second physical (I/O), and PHY circuitry coupled between the first I/O and the second I/O. The PHY circuitry includes one of a retimer circuitry or a switch circuitry, and is to: implement a plurality of ports at the first I/O, and a data link at the second I/O; access a plurality of data flows from the plurality of ports at the first I/O; determine a multiplexed data stream from the plurality of data flows by implementing a multiplexing algorithm; and send the multiplexed data stream for transmission from the data link at the second I/O.

Technologies directed to a wireless network with a cascaded star topology with multiple devices at multiples nodes are described. In one wireless network, multiple devices are manufactured as a common device type and deployed at different nodes of the wireless network. The devices are configured to operate as a base station (BS) role, a gateway (GW) role, a relay (RL) role, or a customer station (STA) role. The nodes can be a base station node (BSN), a relay node (RLN), or a customer premises equipment (CPE) node. One node can be a first-tier hub of the cascaded star topology and another node can be a second-tier hub of the cascaded star topology.

Technologies directed to a wireless network with a cascaded star topology with multiple devices at multiples nodes are described. In one wireless network, multiple devices are manufactured as a common device type and deployed at different nodes of the wireless network. The devices are configured to operate as a base station (BS) role, a gateway (GW) role, a relay (RL) role, or a customer station (STA) role. The nodes can be a base station node (BSN), a relay node (RLN), or a customer premises equipment (CPE) node. One node can be a first-tier hub of the cascaded star topology and another node can be a second-tier hub of the cascaded star topology.

Various embodiments of the teachings herein include a network topology construction method. The method may include: acquiring a MAC address table of each port on each switch in a target network; determining a first connection relationship in the target network according to the MAC addresses of terminal devices in the target network included in each acquired MAC address table; determining at least one first port according to the first connection relationship in the target network; determining a second connection relationship in the target network according to the MAC addresses included in the MAC address table of each of the first ports in the target network; and determining a network topology of the target network according to the first connection relationship and the second connection relationship in the target network.

Systems and methods for supporting dual-port virtual router in a high performance computing environment. In accordance with an embodiment, a dual port router abstraction can provide a simple way for enabling subnet-to-subnet router functionality to be defined based on a switch hardware implementation. A virtual dual-port router can logically be connected outside a corresponding switch port. This virtual dual-port router can provide an InfiniBand specification compliant view to a standard management entity, such as a Subnet Manager. In accordance with an embodiment, a dual-ported router model implies that different subnets can be connected in a way where each subnet fully controls the forwarding of packets as well as address mappings in the ingress path to the subnet.