a simulation analysis of mobility models for
... new mobility management protocol in NEMO. A considerable assessment of any protocol and comparison with other equivalent protocol is not capable to be completed without making use of an accurate mobility model. Selecting an appropriate mobility model can considerably influence the performance estima ...
... new mobility management protocol in NEMO. A considerable assessment of any protocol and comparison with other equivalent protocol is not capable to be completed without making use of an accurate mobility model. Selecting an appropriate mobility model can considerably influence the performance estima ...
PPT
... Datagram network provides network-layer connectionless service VC network provides network-layer connection service Analogous to the transport-layer services, but: - Service: host-to-host - No choice: network provides one or the other - Implementation: in the core ...
... Datagram network provides network-layer connectionless service VC network provides network-layer connection service Analogous to the transport-layer services, but: - Service: host-to-host - No choice: network provides one or the other - Implementation: in the core ...
IOSR Journal of Computer Engineering (IOSR-JCE)
... consume communication resources including bandwidth and power, so that it can be costly. With less frequent information exchanges, these costs decrese but there is more uncertainty about the location of host. Scalable design which works for large size networks requires both routing protocols and res ...
... consume communication resources including bandwidth and power, so that it can be costly. With less frequent information exchanges, these costs decrese but there is more uncertainty about the location of host. Scalable design which works for large size networks requires both routing protocols and res ...
Lecture 1: Course Introduction and Overview
... measure either length of wave or number of waves per second (MHz): long waves => low frequencies, short waves => high frequencies • Tuning to different frequencies => radio receiver pick up a signal. – FM radio stations transmit on band of 88 MHz to 108 MHz using frequency modulations (FM) to record ...
... measure either length of wave or number of waves per second (MHz): long waves => low frequencies, short waves => high frequencies • Tuning to different frequencies => radio receiver pick up a signal. – FM radio stations transmit on band of 88 MHz to 108 MHz using frequency modulations (FM) to record ...
DCN2: Network Design and Analysis Using Switches
... The following experiment uses two routers and four switches. Routing is performed at Layer 3, whereas switching is performed at Layer 2. But some switches can perform function similar to routing. We call this Layer 3 Switching. Since a switch is a Layer 2 device, it does not understand IP address (o ...
... The following experiment uses two routers and four switches. Routing is performed at Layer 3, whereas switching is performed at Layer 2. But some switches can perform function similar to routing. We call this Layer 3 Switching. Since a switch is a Layer 2 device, it does not understand IP address (o ...
A Hybrid Approach to Effort-Limited Fair (ELF) Scheduling for 802.11
... • Records “outcome” via returned Acks (or NULL frames) • Charge a station for “effort” each time it is polled. – Station charged even if packets are corrupted. ...
... • Records “outcome” via returned Acks (or NULL frames) • Charge a station for “effort” each time it is polled. – Station charged even if packets are corrupted. ...
Slide 1
... How to synchronize multiple independent data streams? How to share information on distributed states? In P2P, NC is proven to help to gather data from multiple peers ...
... How to synchronize multiple independent data streams? How to share information on distributed states? In P2P, NC is proven to help to gather data from multiple peers ...
Media Streaming over the Internet
... quality depends not only on the bit-rate but also on the content, display resolution, frame rate and the algorithm used. Some compressors allow us to set not only the target data rate but also the colour depth, image resolution, frequency of key frames and other additional characteristics. The most ...
... quality depends not only on the bit-rate but also on the content, display resolution, frame rate and the algorithm used. Some compressors allow us to set not only the target data rate but also the colour depth, image resolution, frequency of key frames and other additional characteristics. The most ...
COMS 4995-1 Networking Laboratory
... LACNIC (Latin America and some Caribbean Islands) RIPE NCC (Europe, the Middle East, Central Asia, and African countries located north of the equator). AfriNIC (Africa) (100,663,296 IP addresses 5% of total IPv4 addresses!) 8 ...
... LACNIC (Latin America and some Caribbean Islands) RIPE NCC (Europe, the Middle East, Central Asia, and African countries located north of the equator). AfriNIC (Africa) (100,663,296 IP addresses 5% of total IPv4 addresses!) 8 ...
Cisco Network Registrar 7.2 - Lyme Computer Systems, Inc
... scalable DNS and DHCP services for millions of devices and forms the basis of a DOCSIS cable modem provisioning system. Additionally, Cisco Network Registrar plays an important role in service activation for data, voice-over-IP (VoIP), and mobile services. As IP networks continue to experience expon ...
... scalable DNS and DHCP services for millions of devices and forms the basis of a DOCSIS cable modem provisioning system. Additionally, Cisco Network Registrar plays an important role in service activation for data, voice-over-IP (VoIP), and mobile services. As IP networks continue to experience expon ...
New high-quality voice service for mobile networks
... to positive changes in calling patterns, generating substantially more mobile traffic, both in terms of number and duration of calls. Initially, while AMR-WB terminal penetration is low, operators can boost income and strengthen their brands by providing special AMR-WB services with high voice quali ...
... to positive changes in calling patterns, generating substantially more mobile traffic, both in terms of number and duration of calls. Initially, while AMR-WB terminal penetration is low, operators can boost income and strengthen their brands by providing special AMR-WB services with high voice quali ...
Distributed-Operating Systems
... Each packet may take a different path through the network The packets must be reassembled into messages as they arrive ...
... Each packet may take a different path through the network The packets must be reassembled into messages as they arrive ...
Routing protocol Chapter 4 4.1 Introduction
... routers are hosts of the SONET network. It is assumed that all SONET hosts and switches will have IP interfaces, for example in the form of Ethernet interfaces. For example, in Figure 4.1 the link between SONET host A and SONET switch 1 is a SONET interface, while the link between SONET host A and I ...
... routers are hosts of the SONET network. It is assumed that all SONET hosts and switches will have IP interfaces, for example in the form of Ethernet interfaces. For example, in Figure 4.1 the link between SONET host A and SONET switch 1 is a SONET interface, while the link between SONET host A and I ...
Chapter 2: How LAN and WAN Communications Work
... Ethernet uses a control method known as Carrier Sense Multiple Access with Collision Detection (CSMA/CD). All nodes that wish to transmit a frame on the cable are in contention with one another. No single node has priority over another node. The nodes listen for any packet traffic on the cable. If ...
... Ethernet uses a control method known as Carrier Sense Multiple Access with Collision Detection (CSMA/CD). All nodes that wish to transmit a frame on the cable are in contention with one another. No single node has priority over another node. The nodes listen for any packet traffic on the cable. If ...
012327336AQ
... but are not available for all customers. Rural and remote areas often lack broadband choices if any are available at all. When they are available, the DSL or cable plant may only exist within the town limits with no service outside the city limits. This offers a compelling argument that lowcost WiMA ...
... but are not available for all customers. Rural and remote areas often lack broadband choices if any are available at all. When they are available, the DSL or cable plant may only exist within the town limits with no service outside the city limits. This offers a compelling argument that lowcost WiMA ...
Ethernet frames - La Salle University
... • So before transmitting a large packet, Computer 1 issues a small control packet indicating it will transmit a larger packet. • The Computer 2 issues a reply packet which is read by all computers in its vicinity (including Computer 3) that it expects to receive a message from Computer 1. Computer 3 ...
... • So before transmitting a large packet, Computer 1 issues a small control packet indicating it will transmit a larger packet. • The Computer 2 issues a reply packet which is read by all computers in its vicinity (including Computer 3) that it expects to receive a message from Computer 1. Computer 3 ...
Centralized Network Administration The Network That
... relatively high concentration of users per closet. Users should not only consider this benefit based on initial requirements that may only involve one data network technology but more importantly their migration to higher speed technologies that will cause them to operate multiple networks in the fu ...
... relatively high concentration of users per closet. Users should not only consider this benefit based on initial requirements that may only involve one data network technology but more importantly their migration to higher speed technologies that will cause them to operate multiple networks in the fu ...
15-744: Computer Networking
... • Humans use readable host names • E.g. www.cmu.edu • Globally unique (can correspond to multiple hosts) ...
... • Humans use readable host names • E.g. www.cmu.edu • Globally unique (can correspond to multiple hosts) ...
Wireless LANs, Second Edition
... network products and integration of wireless networks into corporate information systems. He is the principal consultant of his consulting firm, Wireless-Nets, Ltd. Jim’s 20 years of experience deals with the analysis, design, software development, installation, and support of numerous client/server ...
... network products and integration of wireless networks into corporate information systems. He is the principal consultant of his consulting firm, Wireless-Nets, Ltd. Jim’s 20 years of experience deals with the analysis, design, software development, installation, and support of numerous client/server ...
- NTUA
... – Towards cloud computing aka. Google, Amazon, IBM…? – Now more than ever the NETWORK IS THE COMPUTER ...
... – Towards cloud computing aka. Google, Amazon, IBM…? – Now more than ever the NETWORK IS THE COMPUTER ...
A Survey on Network Attacks
... computer systems, mainly through the internet. There are many different types of IDS; some of them are described in next section. The manipulations may take the form of attacks by skilled malicious hackers, or script kiddies using automated tools. An Intrusion Detection System is used to detect all ...
... computer systems, mainly through the internet. There are many different types of IDS; some of them are described in next section. The manipulations may take the form of attacks by skilled malicious hackers, or script kiddies using automated tools. An Intrusion Detection System is used to detect all ...
Basics of Networking
... Basics of Networking Class B - This class is used for medium-sized networks. A good example is a large college campus. IP addresses with a first octet from 128 to 191 are part of this class. Class B addresses also include the second octet as part of the Net identifier. ...
... Basics of Networking Class B - This class is used for medium-sized networks. A good example is a large college campus. IP addresses with a first octet from 128 to 191 are part of this class. Class B addresses also include the second octet as part of the Net identifier. ...
Chapter4
... In Chapter 3, “TCP/IP,” you learned how to define and find the valid host ranges used in a Class A, Class B, and Class C network address by turning the host bits all off and then all on. This is very good, but here’s the catch: you were defining only one network, as shown in Figure 4.1. ...
... In Chapter 3, “TCP/IP,” you learned how to define and find the valid host ranges used in a Class A, Class B, and Class C network address by turning the host bits all off and then all on. This is very good, but here’s the catch: you were defining only one network, as shown in Figure 4.1. ...
tymserve™ 2100ld
... from multiple sources. All your computer networks are securely synchronized against this time reference. TymServe has the unique advantage of having its own high performance crystal or atomic clock. This way, you make sure NTP clients always receive accurate time, even if the GPS or other external t ...
... from multiple sources. All your computer networks are securely synchronized against this time reference. TymServe has the unique advantage of having its own high performance crystal or atomic clock. This way, you make sure NTP clients always receive accurate time, even if the GPS or other external t ...
Analysis and Implementation of Embedded SNMP Agent.
... This agent manages information relating to the equipment which is stored in a local database called the MIB.And the SNMP Protocol is used to connect the NMS and the Agents. SNMP is a protocol built on the top of UDP/IP: The architecture specifies the management messages between the management system ...
... This agent manages information relating to the equipment which is stored in a local database called the MIB.And the SNMP Protocol is used to connect the NMS and the Agents. SNMP is a protocol built on the top of UDP/IP: The architecture specifies the management messages between the management system ...