circuit-level gateway
... • According to RFC 2828, the term firewall refers to an internetwork gateway that restricts data communication traffic to and from one of the connected networks and thus protects that network's system resources against threats from the other network • According to Cheswick and Bellovin, a firewall ( ...
... • According to RFC 2828, the term firewall refers to an internetwork gateway that restricts data communication traffic to and from one of the connected networks and thus protects that network's system resources against threats from the other network • According to Cheswick and Bellovin, a firewall ( ...
Mobile IP Principals, Cont…
... Other functions of a bridge, buffering for speed conversion, changing frame format between LANs. ...
... Other functions of a bridge, buffering for speed conversion, changing frame format between LANs. ...
Experimental Evaluation of LANMAR, a Scalable
... possible gateways nodes X.30.23 and X.40.21 are taken. In scenario 3, two possible landmarks of the destination’s group node X.40.21 and X.40.22 are selected. Figure 8 shows the delivery ratio of LANMAR-RIP in test-bed experiments. The results demonstrate that the delivery ratio slightly decreases a ...
... possible gateways nodes X.30.23 and X.40.21 are taken. In scenario 3, two possible landmarks of the destination’s group node X.40.21 and X.40.22 are selected. Figure 8 shows the delivery ratio of LANMAR-RIP in test-bed experiments. The results demonstrate that the delivery ratio slightly decreases a ...
Traffic duplication through segmentable disjoint paths
... $100 million a year [3]. These financial applications are only one example among a long list of applications [4], [5] that require both low latency and reliable delivery. Other examples include telesurgery, distributed simulations, . . . In circuit-switched networks, a classical solution to preserve ...
... $100 million a year [3]. These financial applications are only one example among a long list of applications [4], [5] that require both low latency and reliable delivery. Other examples include telesurgery, distributed simulations, . . . In circuit-switched networks, a classical solution to preserve ...
Database Instance
... The Least Recently Used (LRU) procedure is needed when DBMS needs to recover free space in the bufferpool(s). The pages which have been unused for the longest time and have dirty bit reset, will be cleared for new pages to be read from the data files. The active, circular transaction log files are t ...
... The Least Recently Used (LRU) procedure is needed when DBMS needs to recover free space in the bufferpool(s). The pages which have been unused for the longest time and have dirty bit reset, will be cleared for new pages to be read from the data files. The active, circular transaction log files are t ...
2009125182350Y5
... each AS that is included in the path may use a different criteria for the metric • One system may use, internally, RIP, which defines hop count as the metric; another may use OSPF with minimum delay defined as the metric • The optimum path is the path that fits the organization • In the example figu ...
... each AS that is included in the path may use a different criteria for the metric • One system may use, internally, RIP, which defines hop count as the metric; another may use OSPF with minimum delay defined as the metric • The optimum path is the path that fits the organization • In the example figu ...
Implementation of Storage Area Networks
... centralized management, there is more efficiency in carrying out tasks such as optimization, reconfiguration, and backup/restore. SANs are particularly useful for backups. Previously, there were only two choices: either a tape drive had to be installed on every server and someone went around changi ...
... centralized management, there is more efficiency in carrying out tasks such as optimization, reconfiguration, and backup/restore. SANs are particularly useful for backups. Previously, there were only two choices: either a tape drive had to be installed on every server and someone went around changi ...
CDM-570/LEN - 570/L-IPEN
... channel. In a Vipersat-powered network, the CDM-570/L-IPEN modem takes advantage of its fast acquisition demodulation to allow it to operate in a shared mode. Inbound transmissions (from remote to hub) can be switched from a shared Selective Time Division Multiple Access (STDMA) mode to a dedicated ...
... channel. In a Vipersat-powered network, the CDM-570/L-IPEN modem takes advantage of its fast acquisition demodulation to allow it to operate in a shared mode. Inbound transmissions (from remote to hub) can be switched from a shared Selective Time Division Multiple Access (STDMA) mode to a dedicated ...
Integrated Mobility and Resource Management Mechanism for FMC
... The Candidate Access Router Discovery (CARD, [5]) protocol is designed to consider some QoS related parameters of available PoANs to help the mobile node to select the most suited access router for the handover. However, mainly the particular load and the type of PoANs is considered, it is unclear h ...
... The Candidate Access Router Discovery (CARD, [5]) protocol is designed to consider some QoS related parameters of available PoANs to help the mobile node to select the most suited access router for the handover. However, mainly the particular load and the type of PoANs is considered, it is unclear h ...
TinyOS tutorial (5)
... • Tasks are scheduled to executed and put into a single queue. A task doesn’t preempt another task. • Hardware event handlers are executed in response to a hardware interrupt. They may preempt the execution of a task and other hardware handler. – The events and commands executed as part of a hardwar ...
... • Tasks are scheduled to executed and put into a single queue. A task doesn’t preempt another task. • Hardware event handlers are executed in response to a hardware interrupt. They may preempt the execution of a task and other hardware handler. – The events and commands executed as part of a hardwar ...
The Network Layer
... a) Like RIP, in link state routing, each router also shares its knowledge about its neighbourhood with every routers in the area. b) However, in LSR, the link-state packet (LSP) defines the best known network topology (of an area) is sent to every routers (of other area) after it is constructed loca ...
... a) Like RIP, in link state routing, each router also shares its knowledge about its neighbourhood with every routers in the area. b) However, in LSR, the link-state packet (LSP) defines the best known network topology (of an area) is sent to every routers (of other area) after it is constructed loca ...
RADIO OVER FIBER TRANSMISSION
... light as the transmission medium. An optical communication system consists of a transmitter, which encodes a message into an optical signal, a channel, which carries the signal to its destination, and a receiver, which reproduces the message from the received optical signal. Other types of optical w ...
... light as the transmission medium. An optical communication system consists of a transmitter, which encodes a message into an optical signal, a channel, which carries the signal to its destination, and a receiver, which reproduces the message from the received optical signal. Other types of optical w ...
Internet - DePaul University
... Internet Control Message Protocol (ICMP) • ICMP – Used by routers and nodes – Performs error reporting for the Internet Protocol • ICMP reports errors such as invalid IP address, invalid port address, and the packet has hopped too many times ...
... Internet Control Message Protocol (ICMP) • ICMP – Used by routers and nodes – Performs error reporting for the Internet Protocol • ICMP reports errors such as invalid IP address, invalid port address, and the packet has hopped too many times ...
Planning Routing Implementations with OSPF as Scalable Routing
... Routers find the best paths to destinations by applying Dijkstra’s SPF algorithm to the LSDB. The best path is calculated based on the lowest total cost and sent to the routing table. ...
... Routers find the best paths to destinations by applying Dijkstra’s SPF algorithm to the LSDB. The best path is calculated based on the lowest total cost and sent to the routing table. ...
BACnet Goes To College
... as “open broadcasting” is not preferred. Unlike TCP/IP (Transmission Control Protocol/ Internet Protocol), UDP/IP does not guarantee delivery of data and offers few error recovery services. Fortunately, BACnet guarantees delivery for the critical network services. UDP/IP is a simple and efficient pr ...
... as “open broadcasting” is not preferred. Unlike TCP/IP (Transmission Control Protocol/ Internet Protocol), UDP/IP does not guarantee delivery of data and offers few error recovery services. Fortunately, BACnet guarantees delivery for the critical network services. UDP/IP is a simple and efficient pr ...
TCP
... Transport today: one size fits all • UDP used for sporadic messages (DNS) and some special apps • TCP used for everything else – now approximately 83 % according to: Marina Fomenkov, Ken Keys, David Moore and k claffy, “Longitudinal study of Internet traffic in 1998-2003”, CAIDA technical report, av ...
... Transport today: one size fits all • UDP used for sporadic messages (DNS) and some special apps • TCP used for everything else – now approximately 83 % according to: Marina Fomenkov, Ken Keys, David Moore and k claffy, “Longitudinal study of Internet traffic in 1998-2003”, CAIDA technical report, av ...
Network Loss Inference with Second Order Statistics
... result in Section 4: the link variances are statistically idenMany IP network inference problems are ill-posed: the number of measurements are not sufficient to determine uniquely tifiable from end-to-end measurements of regular unicast probes in general mesh topologies. This is in sharp contrast th ...
... result in Section 4: the link variances are statistically idenMany IP network inference problems are ill-posed: the number of measurements are not sufficient to determine uniquely tifiable from end-to-end measurements of regular unicast probes in general mesh topologies. This is in sharp contrast th ...
Document
... To summarise the ZigBee network layer: ■ Has 3 device types; ZC, ZR and ZED. ■ Performs network discovery and formation ■ Performs address allocation ■ Performs message routing ■ Configured by the stack profile ■ Provides network wide security ■ Allows low power devices to maximize ...
... To summarise the ZigBee network layer: ■ Has 3 device types; ZC, ZR and ZED. ■ Performs network discovery and formation ■ Performs address allocation ■ Performs message routing ■ Configured by the stack profile ■ Provides network wide security ■ Allows low power devices to maximize ...
Lecture No. 13
... It is one of the forms of Internet routing. In Static routing, the table is initialized when system boots and there is no further changes. DYNAMIC ROUTING: In dynamic routing the table is initialized when system boots. It includes routing software which learns routes and updates table. In this way c ...
... It is one of the forms of Internet routing. In Static routing, the table is initialized when system boots and there is no further changes. DYNAMIC ROUTING: In dynamic routing the table is initialized when system boots. It includes routing software which learns routes and updates table. In this way c ...
1 Which of the following devices can we use to segment our lan
... 8 What are some of the advantages of using a link-state routing protocol instead of a distance vector routing protocol? (choose two answers) (A) The topology database eliminates the need for a routing table. (B) Frequent periodic updates are sent to minimize the number of incorrect routes in the top ...
... 8 What are some of the advantages of using a link-state routing protocol instead of a distance vector routing protocol? (choose two answers) (A) The topology database eliminates the need for a routing table. (B) Frequent periodic updates are sent to minimize the number of incorrect routes in the top ...
1 Which of the following devices can we use to segment our lan
... (A) determine the routing protocol to be used (B) determine the WAN topology to be used (C) determine the signaling protocol to be used on the WAN link (D) determine the requirements for latency and jitter (E) determine the installation procedure of the WAN link 28 If 163.168.2.81 is the first usabl ...
... (A) determine the routing protocol to be used (B) determine the WAN topology to be used (C) determine the signaling protocol to be used on the WAN link (D) determine the requirements for latency and jitter (E) determine the installation procedure of the WAN link 28 If 163.168.2.81 is the first usabl ...
Paper Title (use style: paper title)
... nodes and modification of data packet. After the experimental results it is clear that this Robust Source Routing protocol makes transmission process more reliable even if the numbers of malicious nodes are high in the network. Panayiotis Kotzanikolaou et. al. [10] Proposes an on-demand routing prot ...
... nodes and modification of data packet. After the experimental results it is clear that this Robust Source Routing protocol makes transmission process more reliable even if the numbers of malicious nodes are high in the network. Panayiotis Kotzanikolaou et. al. [10] Proposes an on-demand routing prot ...
lihuan_3
... Source proactively divide the plane into αXα square cells, with itself at one of the crossing point of the grid. The source calculates the locations of its four neighboring dissemination points The source sends a data-announcement message to reach these neighbors using ...
... Source proactively divide the plane into αXα square cells, with itself at one of the crossing point of the grid. The source calculates the locations of its four neighboring dissemination points The source sends a data-announcement message to reach these neighbors using ...