When monitoring that a host migrated, a software defined network (SDN) controller may actively detect a port located by the host. Besides, when detecting the port located by the host, the SDN controller may bind the host to the port where the host is located, so as to limit migration of the host. When not detecting a port located by the host, the SDN controller may also block packets from the host.

Examples relate to scaling persistent connections for cloud computing. In some examples, a data packet is used to determine connection information of the first connection. At this stage, server portion of the first connection is closed by using the connection information to send a close command to the cloud server. In response to a keepalive signal from the client computing device, the connection information is used to send a keepalive response to the client computing device to maintain a client portion of the first connection. In response to a service request from the client computing device, a service notification including the service request is sent to the client computing device, where the client computing device initiates a second connection with the cloud server to process the service request.

The present invention provides a method for managing a terminal device in a PON network. When a layer 3 network between an OLT and an ONU is disconnected, a layer 2 channel is established between the OLT and the ONU by extending an OAM protocol, and the ONU is managed by using the layer 2 channel. In this way, maintenance personnel do not need to go to a site to perform commissioning, and therefore, maintenance costs can be reduced.

According to certain embodiments, a message bus system comprises a first client and a second client. The first client is configured to publish messages associated with a message topic to a message bus, and the second client is configured to receive the messages associated with the message topic from the message bus. The message bus system is configured to unsubscribe the second client from the message topic based at least in part on determining that a demand of the second client for the messages associated with the message topic has fallen below a threshold.

Example implementations relate to configuring network devices. For example, a network device includes a controller module to receive a link layer discovery protocol (LLDP) message from a second network device in response to determining that connection to a management device has failed. The controller module is to send a second LLDP message to the second device, where information contained is the second LLDP message is routed to the management device by the second device. The controller module is further to receive configuration changes from the management device and connect to the management device based on the configuration changes, where the configuration changes are routed by the second device.

Described herein are techniques, devices, and systems for handling Session Initiation Protocol (SIP) messages with malformed header fields. A communication device that receives a SIP message from an additional communication device may identify one or more identified header fields of a plurality of first header fields in a message header of the SIP message that correspond to (e.g., match) one or more second header fields in a list of second header fields accessible to the communication device. If the communication device determines that the one or more identified header fields are not malformed, the communication device may process the SIP message without regard to remaining header fields in the message header. If, however, the communication device determines that at least one identified header field of the one or more identified header fields is malformed, the communication device may reject the SIP message.

Techniques for internet last-mile outage detection are disclosed herein. The techniques include methods for monitoring, by a network appliance associated with a network, a plurality of network nodes, detecting, by the network appliance, that a network node of the plurality of network nodes in a last mile of the network has disconnected from the network, overlaying, by the network appliance, the network node over a network model for at least a portion of the network including the network node to generate a model overlay, and determining, by the network appliance, a last mile outage source associated with a disconnection of the network node by identifying a lowest common ancestor node of the network node from the model overlay. Systems and computer-readable media are also provided.

A method for performing initial registration is provided. The method includes receiving a server timeout message, the server timeout message including at least a field set to a value equal to a value received during a first registration. The method further includes initiating restoration procedures by performing an initial registration.

Embodiments of a User Equipment (UE) for initiating a service in a cellular network are disclosed herein. The UE can include processing circuitry to initiate the service for a service type using a current domain. Additionally, the UE can detect a service initiation failure for the service. Moreover, the UE can generate domain selection assistance information (DSAI) based on the detected service initiation failure. The DSAI can include the service type and the current domain. Furthermore, the UE can include transceiver circuitry to send the DSAI to a network entity. The network entity can be a diagnostic and assistance server. The sending of the DSAI can be configured to assist the network entity in selecting a preferred domain for the service type for the case when the UE initiates a new service.

A fingerprint is received from a communication endpoint. The fingerprint is based on a hardware identifier of the communication endpoint. For example the fingerprint may be based on a Media Access Control (MAC) address of the communication endpoint. A request for an emergency call from the communication endpoint is received that also includes the fingerprint. For instance, a user may initiate a 911 call from the communication endpoint. The emergency call is established. After the emergency call is disconnected, a request for an emergency call back is received. For example, if the emergency call prematurely disconnected, the emergency call back is initiated. The request for the emergency call back is routed to the communication endpoint based on the fingerprint to ensure that the emergency call is properly completed.