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Chapter 7
Chapter 7

...  participant determines RTCP packet transmission period by calculating avg RTCP packet size (across entire session) and dividing by allocated rate ...
07/08 Semester B - City University of Hong Kong
07/08 Semester B - City University of Hong Kong

... outgoing trunks, estimate the grade of service. State any assumptions you make. [5 marks] (c) Redesign the above network by increasing the number of the secondary switches to provide a grade of service better than 1 in 500. How many crosspoints does this network require? Draw the resulting design. [ ...
Split-TCP: State of the Union Address
Split-TCP: State of the Union Address

... different behavior of the old and new simulation models relates to out-of-order packet delivery. In the old model, the packet stream was “reassembled” at each proxy – and bytes were only forwarded once they arrived in order. Per-flow state at each proxy. ...
Prince Mohammad Bin Fahd University Network Management
Prince Mohammad Bin Fahd University Network Management

... of nodes, workstations and cables in the network whereas logical topology is the way information flows between different components. In general, physical topology relates to a core network while logical topology relates to basic network. The company told us that they used a bus networks topology, wh ...
Downloading
Downloading

... move information ...
SNMP Management Interface to ngRNC
SNMP Management Interface to ngRNC

... • Internet as medium for real-time communications like VoIP has grown significantly over the past years • However best-effort model not well-suited to these sort of applications • Need real-time monitoring in order to – ensure good service quality – take corrective action should service degradation ...
Taking Control of Advanced Threats
Taking Control of Advanced Threats

...  Hire analysts ▸It’s going to cost you. ▸And if they aren’t trained they depreciate. ...
Wide Area Network
Wide Area Network

... emulates some properties of a circuit-switched network over a packetswitched network. MPLS is a switching mechanism that imposes labels (numbers) to packets and then uses those labels to forward packets. ...
ping - SLAC
ping - SLAC

... – No admin control, unless you are an ISP • Cant read information out of routers • May not be able to sniff/trace traffic due to privacy/security concerns • Don’t know route details between points, may change, not under your control, may be able to deduce some of it ...
SITLine-detailed - Gulf IT
SITLine-detailed - Gulf IT

...  „Something I have, something I know“ (ownership and knowledge)  Device against device, device against server, server against device, security officer against device, security officer against server ı Red-black-separation (No crypto bypass)  Sensitive unencrypted traffic can not be mixed up with ...
Packet Reading for Network Emulation
Packet Reading for Network Emulation

... as part of their IP stack. Secondly, some kernels implement a programmable packet recognition engine that can accept or reject a packet based on a variety of criteria, such as IP source of destination address ranges, packet type, port numbers and so on. The principal advantage of a kernel based filt ...
Network Virtualization
Network Virtualization

... There are some limitation on the implementation of function depends on the Openflow. But Exposing more finegrained control of the forwarding elements will allow us to solve the remaining ...
9) Ch7 Transport Layer
9) Ch7 Transport Layer

... c) At the receiver site, the relationship is the opposite (1-to-many) that requires Demultiplexing process. d) After error checking and dropping of header, TL delivers each message to ...
attacks in mobile adhoc networks: a survey
attacks in mobile adhoc networks: a survey

... to what effect it has on the state of the network as a whole. The effects can be measured in terms of route discovery failure, energy consumption, link breakage, initiating route discovery and so on. This layer suffers from basically two types of attacks [6,7]: a. MAC Misbehavior Attack MAC misbehav ...
Network
Network

... stays strung out over the network, potentially blocking other messages (needs only buffer the piece of the packet that is sent between switches). CM-5 uses it, with each switch buffer being 4 bits per port. – Cut through routing lets the tail continue when head is blocked, compresses the whole messa ...
Network
Network

... Assumes best-effort will be good enough ...
Internet services
Internet services

... • Internet is a global public communication system. It accommodates many various user services referred as Internet services. • The most frequently used Internet services: – Internet Electronic Mail Service – Remote access to file systems and file transfer service – Remote session service - remote t ...
C01-Overview
C01-Overview

... shared RF (e.g., 802.11 WiFi) ...
IP-PBX - Ingate Systems
IP-PBX - Ingate Systems

... SMEs can benefit today from integrated bundles such as those offered by Cbeyond, without making any new capital investments on PBX systems / equipment An integrated bundle based on VoIP technology includes features not available with traditional TDM solutions ƒ Can utilize the entire access circuit ...
ICANN - GovLab
ICANN - GovLab

... as telephone lines, cable, Wi-Fi, and fiber optics.30 For example, Verizon is an ISP company offering Internet connection through fiber optics in New York City; Spectranet is an ISP company offering connection through broadband and WiFi in India.31 ISPs may also offer hosting services, such as offer ...
Review related concept in Computer Networks
Review related concept in Computer Networks

... reassembly ...
Designing and Building for End-to-End Solutions
Designing and Building for End-to-End Solutions

... • 6LoWPAN is an acronym of IPv6 – Low power wireless personal area networks • Concluded working group in the internet area of the IETF • To apply for smallest devices and low power devices • Limited processing capabilities should be able to participate within IoT • Defined encapsulation and header c ...
Proceedings of the 5th Symposium on Operating Systems Design and Implementation USENIX Association
Proceedings of the 5th Symposium on Operating Systems Design and Implementation USENIX Association

... priority than the first. Thus, under load, ModelNet will preferentially emulate the delay for packets that have already entered the core rather than service packets waiting to enter the core through hardware interrupts. This means that core CPU saturation results in dropped packets (at the physical ...
Ad Hoc Networking
Ad Hoc Networking

... To send to all reachable nodes When you don’t know the direction: RREQ For returning cached RREPs (optimization) For returning RREPs For data packets ...
IOSR Journal of Computer Engineering (IOSR-JCE)
IOSR Journal of Computer Engineering (IOSR-JCE)

... installing wireless hotspots inside office buildings, warehouses, shipping yards, corporate campuses and various other facilities, allowing employees with wireless IP handsets and other compatible devices to talk to each other, as well as the outside world, without relying on desktop phones. Yet wir ...
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Deep packet inspection

Deep Packet Inspection (DPI, also called complete packet inspection and Information eXtraction or IX) is a form of computer network packet filtering that examines the data part (and possibly also the header) of a packet as it passes an inspection point, searching for protocol non-compliance, viruses, spam, intrusions, or defined criteria to decide whether the packet may pass or if it needs to be routed to a different destination, or, for the purpose of collecting statistical information. There are multiple headers for IP packets; network equipment only needs to use the first of these (the IP header) for normal operation, but use of the second header (TCP, UDP etc.) is normally considered to be shallow packet inspection (usually called Stateful Packet Inspection) despite this definition.There are multiple ways to acquire packets for deep packet inspection. Using port mirroring (sometimes called Span Port) is a very common way, as well as an optical splitter.Deep Packet Inspection (and filtering) enables advanced network management, user service, and security functions as well as internet data mining, eavesdropping, and internet censorship. Although DPI technology has been used for Internet management for many years, some advocates of net neutrality fear that the technology may be used anticompetitively or to reduce the openness of the Internet.DPI is used in a wide range of applications, at the so-called ""enterprise"" level (corporations and larger institutions), in telecommunications service providers, and in governments.
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