摘要:
Aspects of the embodiments are directed to systems, methods, and devices, such as an upstream device that includes an input/output port. The input/output port configured to receive a message from an output port of a downstream device; transmit a plurality of acknowledgement messages to the downstream device; and transmit a response message to the received message to the downstream device.
摘要:
Aspects of the present disclosure provide mechanisms for count synchronization in a wireless communication network. A respective count value may be maintained for each packet transmitted over a wireless connection, where each count value includes a respective hyper frame number and a respective sequence number. To synchronize a current count value associated with a current packet, a count synchronization may be initiated to transmit at least a current hyper frame number of the current count value over the wireless connection.
摘要:
Eine Netzwerküberwachungseinheit wird beschrieben zur Wegredundanzbewertung von Kommunikationsverbindungen in einem Backbone-Netzwerk (500). Die Netzwerküberwachungseinheit ist ausgebildet, an Übergabepunkten erfasste Metadaten, Signaturen und/oder Zeitstempel zu empfangen und ein Paar logisch redundanter Kommunikationsverbindungen unter Verwendung der Metadaten, Signaturen und/oder Zeitstempel zu identifizieren, Informationstabellen (320, 320') für die identifizierten Kommunikationsverbindungen (AC, AC') durch Zusammenführen der Metadaten, Signaturen und/oder Zeitstempel zu erzeugen und die Informationstabellen (320, 320') bezüglich Korrelation (E4) der Metadaten, Signaturen und/oder Zeitstempel zu evaluieren.
摘要:
A server causes a user device configured as a test agent to implement a testing plan for testing a network configuration regarding zero-rating. By causing the test agent to implement the testing plan, the server causes the test agent to send one or more requests to one or more respective predetermined IP addresses. The server receives data indicating results of the one or more requests. The server further uses the data to identify whether the network configuration is potentially misconfigured regarding zero-rating. In response to identifying that the network configuration is potentially misconfigured regarding zero-rating, the server sends a notification of the potential misconfiguration to a network operator.
摘要:
A method of operating a control entity of a communication network comprises storing (101) configuration data for a node (10) of the communication network. The control entity determines (102) a congestion level of the communication network. The control entity sets (103) a duration of a heartbeat signal waiting period based on the determined congestion. The duration of the heartbeat signal waiting period increases with increased congestion. The control entity determines (104) if synchronisation of configuration data is required with the node based on whether a heartbeat signal, or a predetermined number of heartbeat signals, is received from the node within the heartbeat signal waiting period. The control entity may determine (102) a congestion level of the communication network based on delay times of configuration notifications received from a node (10), or a plurality of nodes (10), in the network.
摘要:
Systems and methods are provided for routing a message in a network. A bit length of an identifier field of a received message is identified. A lookup table is selected based on the bit length of the identifier field. The identifier field is used as a reference for the lookup table to identify a bus for the message, and the message is forwarded to the bus.
摘要:
A network device in a network is provided that is configured to implement a process for modifying a timestamp in a packet that is a timing protocol packet. The timing protocol packet is encapsulated by a user data protocol (UDP) datagram, where the modified timestamp is written into the packet, but does not require a checksum of the UDP datagram to be changed. The process includes receiving a packet including a first timestamp over the network, receiving the first timestamp from the packet and a second timestamp to be written to the packet, and determining a third timestamp that is a modification of the second timestamp to be written to the packet, the third timestamp having least significant bits modified from the second timestamp such that the checksum of the UDP datagram is unchanged. The process writes the third timestamp into the packet and transmits the UDP datagram to the network.
摘要:
The subject matter described herein relates to method, systems, and computer readable media for detecting physical link intrusions. A method for detecting physical link intrusions includes monitoring a link delay signature associated with a physical link based on one-way link delay measurements obtained using at least one network tap. The method also includes determining whether a change in the link delay signature has met or exceeded a threshold value. The method further includes in response to determining that the change in the link delay signature has met or exceeded the threshold value, determining that a physical link intrusion has occurred.
摘要:
Monitoring of a life cycle of a connection of a network client device to a network via monitoring time synchronization traffic flowing between one or more network client devices and a time server in a network is provided. A system for monitoring a life cycle of a connection of a network client device to a network includes a security device operable to identify a true identity of the one or more network client devices, identify a network client device's connections to and disconnections from the network, determine which network client devices have been associated with a particular internet protocol (IP) address, and generate an output of connection and disconnection information associated with a network client device. In some examples, the security device is operable to detect anomalies and malicious patterns in the network.
摘要:
A method of identifying a network condition between a pair of network devices, the method comprising: determining a first time period between receiving a first-received packet for an initial media frame and receiving a first-received packet for a subsequent media frame, wherein the packets are received at one of the devices via a network and each received packet comprises a timestamp; determining a second time period between the timestamp of the packet for the initial media frame and the timestamp of the packet for the subsequent media frame; and identifying a network condition in dependence on a difference between the first and second time periods.