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Switching vs Routing Overview
Switching vs Routing Overview

... not all of the cards you are using support CEF. When a line card that does not support CEF receives a packet, the line card forwards the packet to the next higher switching layer (the route processor) or forwards the packet to the next hop for processing. This structure allows legacy interface proce ...
Module 4 - IIS Windows Server
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... • Bridge/Switch learns which devices are connected to each port • The device MAC addresses and port are stored in the addressing table (Content Addressable Memory) • When a packet arrives Host and destination address information is identified CAM stores host MAC addresses and associated port numbers ...
Midterm Review - Network Layers
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... Transmission Control Protocol (TCP) • Links the application layer to the network layer • Performs packetization and reassembly • Ensures reliable delivery of packets ...
Fondamenti di Internet: “Aspetti pratici delle reti di telecomunicazioni ”
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... lclean: removes temporary files from a lab directory linfo: provides information about a lab without starting it ltest: allows to run tests to check that the lab is working properly ...
PowerPoint Presentation - IF-MAP
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... – Faster response = stronger security – Less expense due to automation ...
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... •The “best” route may change from time to time as the load changes, hurting voice •A Flow Router can send each flow over a different near-equal-cost route (flow in order) • It can then load balance the network, sending each flow over the best available route • It keeps track of 16 near-equal-cost ro ...
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... – like 800 number for datacomm ...
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... 13) A relatively small number of standard protocols, consisting primarily of the _____________ protocol suites, satisfy nearly all of the communication requirements for modern data communication networks. a) TCP/IP and UDP b) TCP/IP and BGP c) TCP/IP and ATM d) TCP/IP and Ethernet 14) In a _________ ...
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... Security Analysis  Create executable memory regions  Add code to a trusted program  Tamper with the data of a process ...
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... Skype  voice-over-IP P2P application  centralized server: finding address of remote party:  client-client connection: direct (not through server) Instant messaging  chatting between two users is P2P  centralized service: client presence detection/location • user registers its IP address with ce ...
CENT 305 Information Security
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... Goal is to prevent specific types of information from moving between external networks and internal networks. ...
iSCSI Performance
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... a tagging mechanism if action of the flow rule matched erroneously is same as the action of expected flow rule. This will result in same path but different flow rule match. Moreover, in OpenFlow, if one adds any nonoverlapping rule through the command line utility of the switch e.g., ovs-ofctl then ...
TCP/IP Protocol Suite (Internet Model)
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... Q2-2. Which layers of the TCP/IP protocol suite are involved in a link-layer switch? A link-layer switch in a link is involved only in two layers, data-link and physical. Q2-3. A router connects three links (networks). How many of each of the following layers can the router be involved with? a. phys ...
Online Service Management Algorithm for Cellular/WLAN
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... Next generation networks - support heterogeneous multimedia services ...
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... accessing the Internet, such as VLAN switches, routers and firewalls. Alternatively, it may exploit vulnerabilities in network monitoring and intrusion detection applications such as Snort, Wireshark (formerly Ethereal), tcpdump or other network-exposed applications that may be run on the network us ...
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... different NC solutions defined by the characteristics the end receivers and applications. This enables a diverse device ecosystem to receive the streaming at the appropriate quality. This feedback loop provided by the discovery tailors the NC to the network conditions. This is consistent with 3GPP a ...
Netvisor® Fabric Visibility
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... traffic visibility are unfortunately getting addressed with separate and high cost network tap and packet broker infrastructure deployments. These infrastructures are heavily dependent upon the direct replication of desired network traffic, which in practice only provides insight into a fraction of ...
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... 2 Architecture At present, many techniques can be used to build end-to-end network connections with some service guarantees. For instance, Differentiated Service (DiffServ) [6] manages the network bandwidth by creating per hop behaviors inside layer-3 routers, while Multi Protocol Label Switching (M ...
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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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