What are Networks? - Distributed Systems Group
... reduces the design complexity. It divides the large problem into smaller ones. • The number, name, contents and function of each layer vary from network to network. • However for each network the idea is that one layer offers something to a second layer without the second layer knowing how the first ...
... reduces the design complexity. It divides the large problem into smaller ones. • The number, name, contents and function of each layer vary from network to network. • However for each network the idea is that one layer offers something to a second layer without the second layer knowing how the first ...
MobileMAN Architecture and Protocols
... Inter-layer coordination (cont.) Example: Forwarding/Cooperation/Transport coordination (cont.) The transport layer might use a redundant coding technique (see, e.g., FEC): a message is coded into n blocks but only k (k
... Inter-layer coordination (cont.) Example: Forwarding/Cooperation/Transport coordination (cont.) The transport layer might use a redundant coding technique (see, e.g., FEC): a message is coded into n blocks but only k (k
Click to add title
... • Short off-line calculation times for fully converting networks • Results are depending on demands routing • Only some improvement by non-simple cycles Outlook: • Partial wavelength conversion • Multiple failures ...
... • Short off-line calculation times for fully converting networks • Results are depending on demands routing • Only some improvement by non-simple cycles Outlook: • Partial wavelength conversion • Multiple failures ...
No Slide Title
... DARPA sponsored network that developed IP, TCP and UDP. The concept was supposed to make the military’s networks less vulnerable to attacks. • The ARPANET became the Internet when the government gave control of the network to its component members. ...
... DARPA sponsored network that developed IP, TCP and UDP. The concept was supposed to make the military’s networks less vulnerable to attacks. • The ARPANET became the Internet when the government gave control of the network to its component members. ...
Voice Over IP (VoIP): Internet Telephony
... • An example use would be to have a telephone that connects to the Internet and, at the same time, has a connection to the PSTN as well – There are equipment that will automatically switch to the PSTN if for some reason the VoIP connection does not function ...
... • An example use would be to have a telephone that connects to the Internet and, at the same time, has a connection to the PSTN as well – There are equipment that will automatically switch to the PSTN if for some reason the VoIP connection does not function ...
Chapter 1 Data Networks and the Internet
... • 1986, NSF sponsored extended Internet support to general research and education community —NSFNET backbone —connected to ARPANET, since both are based on TCP/IP ...
... • 1986, NSF sponsored extended Internet support to general research and education community —NSFNET backbone —connected to ARPANET, since both are based on TCP/IP ...
Routing
... – In link state each router monitors its directly connected links and broadcasts to all other routers whenever a change in link state occurs – The extension requires to support multicasting is following: -The link state part also contains all multicast groups for which the link has member(s) -with t ...
... – In link state each router monitors its directly connected links and broadcasts to all other routers whenever a change in link state occurs – The extension requires to support multicasting is following: -The link state part also contains all multicast groups for which the link has member(s) -with t ...
Privacy and Security on Internet: Virtual Private Networks
... costly, dedicated lines to link its offices. The high price of such a line has been unaffordable for most companies, which preferred instead to lease the lines and a pay monthly fee for the privilege of using such lines. The high cost of implementing and managing private networks compared to inexpen ...
... costly, dedicated lines to link its offices. The high price of such a line has been unaffordable for most companies, which preferred instead to lease the lines and a pay monthly fee for the privilege of using such lines. The high cost of implementing and managing private networks compared to inexpen ...
Internetworking
... connects multiple backbones (sometimes referred to as peers). Regional networks are smaller backbones that cover smaller geographical areas (e.g., cities or states) A point of presence (POP) is a machine that is connected to the Internet. ...
... connects multiple backbones (sometimes referred to as peers). Regional networks are smaller backbones that cover smaller geographical areas (e.g., cities or states) A point of presence (POP) is a machine that is connected to the Internet. ...
Backbone Networks, MAN, WAN
... rerouted through a new ring formed out of the parts of the primary and secondary rings not affected by the break. The network then operates over this temporary ring until the break can be repaired. ...
... rerouted through a new ring formed out of the parts of the primary and secondary rings not affected by the break. The network then operates over this temporary ring until the break can be repaired. ...
Internet
... Protocol (IP) are the protocols for communication on the Internet. • A stream of data that is sent over the Internet is first broken down into packets by the TCP. • After a packet is created by TCP, the internet protocol (IP) then takes over and actually sends the packet to its destination along a r ...
... Protocol (IP) are the protocols for communication on the Internet. • A stream of data that is sent over the Internet is first broken down into packets by the TCP. • After a packet is created by TCP, the internet protocol (IP) then takes over and actually sends the packet to its destination along a r ...
IPTV
... companies network, using IP over high speed WAN (e.g. SDH, fibre) Service Provider Access Network: often called the “last mile” to the users premise (house, office). Technologies such as ADSL, FTTH and Ethernet Home Network: Connect your A/V equipment together (PCs, digital video recorders, TV’s and ...
... companies network, using IP over high speed WAN (e.g. SDH, fibre) Service Provider Access Network: often called the “last mile” to the users premise (house, office). Technologies such as ADSL, FTTH and Ethernet Home Network: Connect your A/V equipment together (PCs, digital video recorders, TV’s and ...
William Stallings Data and Computer Communications
... Interior Router Protocol (IRP) Exterior Routing Protocol (ERP) • Passes routing information between routers within AS • May be more than one AS in internet • Routing algorithms and tables may differ between different AS • Routers need some info about networks outside their AS • Used exterior router ...
... Interior Router Protocol (IRP) Exterior Routing Protocol (ERP) • Passes routing information between routers within AS • May be more than one AS in internet • Routing algorithms and tables may differ between different AS • Routers need some info about networks outside their AS • Used exterior router ...
02-Protocols and TCP-IP
... • Developed by the US Defense Advanced Research Project Agency (DARPA) for its packet switched network (ARPANET) • Used by the global Internet • No official model but a working one. —Application layer —Host to host or transport layer —Internet layer —Network access layer —Physical layer ...
... • Developed by the US Defense Advanced Research Project Agency (DARPA) for its packet switched network (ARPANET) • Used by the global Internet • No official model but a working one. —Application layer —Host to host or transport layer —Internet layer —Network access layer —Physical layer ...
Ch02
... Need For Protocol Architecture • E.g. File transfer —Source must activate communication path or inform network of destination —Source must check destination is prepared to receive —File transfer application on source must check destination file management system will accept and store file for his u ...
... Need For Protocol Architecture • E.g. File transfer —Source must activate communication path or inform network of destination —Source must check destination is prepared to receive —File transfer application on source must check destination file management system will accept and store file for his u ...
Core network components - Charles Sturt University
... Link-state updates sent (using flooding) as and when required. A router broadcasts routing information to all other routers in the AS, not just to its neighboring routers. Every router locally runs Dijkstra’s algorithm to determine a shortest-path tree to all subnets. Authenticated updates: al ...
... Link-state updates sent (using flooding) as and when required. A router broadcasts routing information to all other routers in the AS, not just to its neighboring routers. Every router locally runs Dijkstra’s algorithm to determine a shortest-path tree to all subnets. Authenticated updates: al ...
Universität Stuttgart Communication Networks II Sample Solution
... Network operators should select link costs inversly proportional to the transmission capacity of the link. In Figure 1 the ratio of cost to transmission capacity varies between 0.06 and 1.5. The high capacity links, i.e. the 50 MBit/s links, have low cost. For the 10 MBit/s links the cost values var ...
... Network operators should select link costs inversly proportional to the transmission capacity of the link. In Figure 1 the ratio of cost to transmission capacity varies between 0.06 and 1.5. The high capacity links, i.e. the 50 MBit/s links, have low cost. For the 10 MBit/s links the cost values var ...
ppt
... routes change slowly over time Dynamic: routes change more quickly periodic update in response to link cost changes ...
... routes change slowly over time Dynamic: routes change more quickly periodic update in response to link cost changes ...
ppt - NOISE
... • IP over anything, anything over IP – Has allowed for much innovation both above and below the IP layer of the stack – Any device with an IP stack can “get on the Internet” ...
... • IP over anything, anything over IP – Has allowed for much innovation both above and below the IP layer of the stack – Any device with an IP stack can “get on the Internet” ...
Chapter 8 Slides (Modified) File
... • Satellite are also used are used to quickly send information between two points on Earth that are physically separated by a great distance. • Satellites are also used for services like : • Satellite radio and TV distribution • Satellite Internet services to consumers • Some Internet services also ...
... • Satellite are also used are used to quickly send information between two points on Earth that are physically separated by a great distance. • Satellites are also used for services like : • Satellite radio and TV distribution • Satellite Internet services to consumers • Some Internet services also ...
Network
... Date / Computer Networks • In contrast, Computer networks are packetswitched which is: • Communication channel does not remain open the whole time • Data is broken up at the sending end into small packets and routed individually to the receiver • Each packet may take a different route to the destina ...
... Date / Computer Networks • In contrast, Computer networks are packetswitched which is: • Communication channel does not remain open the whole time • Data is broken up at the sending end into small packets and routed individually to the receiver • Each packet may take a different route to the destina ...
01101014
... connection to an exchange point may reduce the need for multiple connections. A physical network infrastructure is operated by a single entity with the purpose to facilitate the exchange of Internet traffic among Internet Service Providers. This exchange of national or international IP traffic on an ...
... connection to an exchange point may reduce the need for multiple connections. A physical network infrastructure is operated by a single entity with the purpose to facilitate the exchange of Internet traffic among Internet Service Providers. This exchange of national or international IP traffic on an ...
ppt
... Each packet is passed through the network from node to node along some path (Routing) At each node the entire packet is received, stored briefly, and then forwarded to the next node (Store-and-Forward Networks) Typically no capacity is allocated for packets ...
... Each packet is passed through the network from node to node along some path (Routing) At each node the entire packet is received, stored briefly, and then forwarded to the next node (Store-and-Forward Networks) Typically no capacity is allocated for packets ...
Overview of Computer Networking
... Layering: physical communication data application transport network link physical ...
... Layering: physical communication data application transport network link physical ...