Slides - My E-town
... The Domain Name System (DNS) uses Domain Name Servers (also DNS) to convert user readable URLs like google.com to IP ...
... The Domain Name System (DNS) uses Domain Name Servers (also DNS) to convert user readable URLs like google.com to IP ...
ECEN 689 Special Topics in Data Science for Communications
... TCP/UDP Header and Information for ISPs • Have seen that UDP/TCP header information (port numbers) is used at hosts to associate packets to applications • Many of these associations are registered by IANA • The identify of the application that generated a packet can be inferred (to some degree) ...
... TCP/UDP Header and Information for ISPs • Have seen that UDP/TCP header information (port numbers) is used at hosts to associate packets to applications • Many of these associations are registered by IANA • The identify of the application that generated a packet can be inferred (to some degree) ...
QoS: IntServ and DiffServ
... – Packet inserted into queues expected arrival time instead of actual • More complex queue management! ...
... – Packet inserted into queues expected arrival time instead of actual • More complex queue management! ...
Packet switching
... • Layer 1 - Network Access Layer - This layer describes the physical equipment necessary for communications, such as twisted pair cables, the signalling used on that equipment, and the lowlevel protocols using that signalling. • Layer 2 - Internet or Internetworking Layer This layer defines IP addre ...
... • Layer 1 - Network Access Layer - This layer describes the physical equipment necessary for communications, such as twisted pair cables, the signalling used on that equipment, and the lowlevel protocols using that signalling. • Layer 2 - Internet or Internetworking Layer This layer defines IP addre ...
Slide 1
... − Host multiple customers on a single shared infrastructure − Allow each customer to configure their own network topology to suit application needs − Data and performance isolation between customers, and the utility − Allow controlled and efficient inter-communication between customers if required a ...
... − Host multiple customers on a single shared infrastructure − Allow each customer to configure their own network topology to suit application needs − Data and performance isolation between customers, and the utility − Allow controlled and efficient inter-communication between customers if required a ...
Reliable Networking
... types of protocols stacked on top Still should check if the packets received match the type of receiver (application directly / “TCP”) Any interaction via interface defined in header. May need a separate thread for each port to handle control traffic (sending ACKs etc.) ...
... types of protocols stacked on top Still should check if the packets received match the type of receiver (application directly / “TCP”) Any interaction via interface defined in header. May need a separate thread for each port to handle control traffic (sending ACKs etc.) ...
Wireless Communications and Networks
... may arrive out of sequence Exit node restores packets to original order Responsibility of exit node or destination to detect loss of packet and how to recover ...
... may arrive out of sequence Exit node restores packets to original order Responsibility of exit node or destination to detect loss of packet and how to recover ...
Powerpoint - Chapter 1
... Broadband networks carry multiple signals at once, while baseband networks carry only one signal. A backbone network connects segments together, forming an internetwork. Most operating systems today use the peer-to-peer model, which allows computers to function as both clients and servers. ...
... Broadband networks carry multiple signals at once, while baseband networks carry only one signal. A backbone network connects segments together, forming an internetwork. Most operating systems today use the peer-to-peer model, which allows computers to function as both clients and servers. ...
Switching and Forwarding
... • Source host has no way of knowing if the network is capable of delivering a packet or if the destination host is even up. • Since packets are treated independently, it is possible to route around link and node failures. ...
... • Source host has no way of knowing if the network is capable of delivering a packet or if the destination host is even up. • Since packets are treated independently, it is possible to route around link and node failures. ...
Logical addressing
... functionality up to the network layer. It receives the MAC frame from the source host since the source host has kept the destination MAC as the MAC address of the router. Once, it has received the packet, it will inspect the IP address, recognizing that the IP address is not its own, it will route t ...
... functionality up to the network layer. It receives the MAC frame from the source host since the source host has kept the destination MAC as the MAC address of the router. Once, it has received the packet, it will inspect the IP address, recognizing that the IP address is not its own, it will route t ...
Document
... gradually increasing its window size until it senses packet loss - at which point it quickly reduces the window size ...
... gradually increasing its window size until it senses packet loss - at which point it quickly reduces the window size ...
Document
... Payload = MTU – (TCPOverhead + IPOverhead+ MACOverhead) MTU is maximum transmission unit Overheads are: TCP 20 bytes; IP 20 Bytes; MAC 18 bytes ...
... Payload = MTU – (TCPOverhead + IPOverhead+ MACOverhead) MTU is maximum transmission unit Overheads are: TCP 20 bytes; IP 20 Bytes; MAC 18 bytes ...
03-PacketSwitching-TRybczynski-13Jan2016
... • Traffic characterization (driver behaviour and prioritization) • Protecting the network (maximizing cars/minute) ...
... • Traffic characterization (driver behaviour and prioritization) • Protecting the network (maximizing cars/minute) ...
Firewalking
... • All the work of first gen firewalls but now with more transport layer • Examine each packet as well as its position in the data stream • Records the “state” of the connection ...
... • All the work of first gen firewalls but now with more transport layer • Examine each packet as well as its position in the data stream • Records the “state” of the connection ...
Name: Leo Mendoza WAN (used to be slow, noisy)
... between sender and reciever and all data passes over this circuit (bandwidth reserved, using Synchronous Time Division Multiplexing [TDM])-example, telephone system (dedicated connection until termination) Packet switched subnet - subnet in which all data messages are transmitted using fixed-size pa ...
... between sender and reciever and all data passes over this circuit (bandwidth reserved, using Synchronous Time Division Multiplexing [TDM])-example, telephone system (dedicated connection until termination) Packet switched subnet - subnet in which all data messages are transmitted using fixed-size pa ...
a sequence preserving efficient packet scheduler using
... problem may be solved by time-sharing, i.e. by giving each job a time slot or quantum allowance of and interrupt the job if it is not completed by then. The job is resumed next time a time slot is assigned to that process. A multiplexer, switch or router that provides round-robin scheduling has a se ...
... problem may be solved by time-sharing, i.e. by giving each job a time slot or quantum allowance of and interrupt the job if it is not completed by then. The job is resumed next time a time slot is assigned to that process. A multiplexer, switch or router that provides round-robin scheduling has a se ...