Topic
Port (computer networking)
About: Port (computer networking) is a research topic. Over the lifetime, 23925 publications have been published within this topic receiving 197310 citations. The topic is also known as: TCP port & UDP port.
Papers published on a yearly basis
1 / 4
Papers
TL;DR: In this paper, the relative position of ports in the global network through indicators of centrality is analyzed and the results reveal a certain level of robustness in global shipping network, and the network properties remain rather stable in terms of the main nodes polarizing the network and the overall structure of the system.
Abstract: Port and maritime studies dealing with containerization have observed traffic concentration and dispersion throughout the world. Globalization, intermodal transportation, and technological revolutions in the shipping industry have resulted in both network extension and rationalization. However, lack of precise data on inter-port relations prevent the application of wide network theories to global maritime container networks, which are often examined through case studies of specific firms or regions. This paper presents an analysis of the global liner shipping network in 1996 and 2006, a period of rapid change in port hierarchies and liner service configurations. While it refers to literature on port system development, shipping networks, and port selection, it is one of the only analyses of the properties of the global container shipping network. The paper analyzes the relative position of ports in the global network through indicators of centrality. The results reveal a certain level of robustness in the global shipping network. While transhipment hub flows and gateway flows might slightly shift among nodes in the network, the network properties remain rather stable in terms of the main nodes polarizing the network and the overall structure of the system. Additionally, mapping the changing centrality of ports confirms the impacts of global trade and logistics shifts on the port hierarchy and indicates that changes are predominantly geographic
394 citations
Patent•
27 Mar 2009TL;DR: In this article, a distributed virtual port (DVport) is stored in a persistent storage location, the DVport comprising a state of a corresponding virtual port and configuration settings of the virtual port.
Abstract: A method for persisting a state of a virtual port in a virtualized computer system is described. A distributed virtual port (DVport) is stored in a persistent storage location, the DVport comprising a state of a corresponding virtual port and configuration settings of the virtual port. In addition, an association between the virtual port and the virtual network interface card (VNIC) connected to the virtual port is stored. When a virtual machine corresponding to the VNIC is restarted, the state from the DVport is restored to a new virtual port from the persistent storage location.
381 citations
Patent•
10 Jun 1994
TL;DR: In this article, the authors propose a memory for storing virtual local area network (VLAN) designations for internal and external ports, and associate the stored VLAN designations with messages transmitted from any of the ports to which the VLAN designation has been assigned.
Abstract: A hub for a segmented virtual local area network with shared media access has at least one internal port for receiving and transmitting digital data messages within the hub and may have at least one external port for receiving and transmitting digital data messages external to the hub. The hub further includes a memory for storing virtual local area network (VLAN) designations for internal and external ports. The hub associates VLAN designations with at least one internal port, stores such VLAN designations in the memory, and associates the stored VLAN designations with messages transmitted from any of the ports to which the VLAN designation has been assigned. Additionally, the hub identifies VLAN designations associated with messages received by or within the hub and means and transmits to any of the internal ports only messages received within the hub and having associated with them a VLAN designation which matches the stored VLAN designation assigned to the port. The hub also has the ability to store media access control (MAC) addresses of internal ports and of end stations connected to internal or external ports and only send a message to a port when the destination address of the message is the MAC address of that port or of an end station known to be reachable through that port.
377 citations
Patent•
29 Jun 1994
TL;DR: In this article, a multi-port packet-based bridge is described in which packet transmissions on particular ports or between ports may be monitored on another, monitoring port by using a Supervisory Access Terminal.
Abstract: A multi-port packet-based bridge is described in which packet transmissions on particular ports or between ports may be monitored on another, monitoring port. Efficient operation is realized by using a multi-processor environment and data structures that allow a packet received on one port to be transmitted to multiple ports without being "copied" multiple times. By using a Supervisory Access Terminal, it is possible to specify various circumstances under which a packet will be sent to the monitoring port. These circumstances include monitoring of all packets incoming to a selected port (or ports), all packets forwarded to a selected port (or ports), and packets generated internally and sent to a selected port (or ports). In addition, all packets forwarded from one selected port to another selected port may be monitored. Port monitoring is supported by particular data structures that promote efficient dispatching of packets and by a Bridging Cache that retains the results of recent dispatch calculations. Similar techniques are applied to multi-port routers.
373 citations
TL;DR: In this paper, the determinants of waterborne transport costs, with particular emphasis on the efficiency at port level, were examined, and it was shown that port efficiency is a relevant determinant of a country's competitiveness.
Abstract: This paper examines the determinants of waterborne transport costs, with particular emphasis on the efficiency at port level. Its main contribution is (1) to generate statistically quantifiable measures of port efficiency from a survey of Latin American common user ports, and (2) to estimate a model of waterborne transport costs, including the previously generated port efficiency measures as explanatory variables. In order to incorporate different port efficiency measures from the survey, we use principal component analysis (PCA). Our estimations show that the specified variables in the model explain a great proportion of the change in waterborne transport costs. With regard to port efficiency, the result is especially important for one of the port efficiency measures obtained through PCA with an estimated elasticity equivalent to that of distance. Other explanatory variables which show to be statistically significant are the monthly liner service availability, distance, and the goods' value per ton. The conclusions are relevant for policy makers as they show and quantify that port efficiency is a relevant determinant of a country's competitiveness – and in this respect, there still exist big differences among Latin American countries. Unlike most other relevant variables, port efficiency can be influenced by public policies.
359 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2022 | 13 |
| 2021 | 874 |
| 2020 | 1,338 |
| 2019 | 1,361 |
| 2018 | 1,382 |
| 2017 | 1,284 |