PPT
... two levels of the system (e.g., OS to OS, app to app). • A message usually contains a header, indicating what kind of information it contains, and some data. • What the message “means,” i.e., how to interpret the bytes in the message, is an agreement between the two communicating parties (the protoc ...
... two levels of the system (e.g., OS to OS, app to app). • A message usually contains a header, indicating what kind of information it contains, and some data. • What the message “means,” i.e., how to interpret the bytes in the message, is an agreement between the two communicating parties (the protoc ...
ppt
... • Positive transition for 0, negative for 1 • Transition every cycle communicates clock (but need 2 transition times per bit) • DC balance has good electrical properties ...
... • Positive transition for 0, negative for 1 • Transition every cycle communicates clock (but need 2 transition times per bit) • DC balance has good electrical properties ...
The Data Link Layer
... ensure each packet has been received correctly before sending next; uses acks/nacks need to use sequence numbers ...
... ensure each packet has been received correctly before sending next; uses acks/nacks need to use sequence numbers ...
CSE524: Lecture 2
... – Goal: run protocols over packet satellite net, packet radio net, and wired ARPANET ...
... – Goal: run protocols over packet satellite net, packet radio net, and wired ARPANET ...
Internet
... - And things are getting worse, not better Yet there are pressing requirements for which the current architecture is not well suited ...
... - And things are getting worse, not better Yet there are pressing requirements for which the current architecture is not well suited ...
ch12
... discarded. Neither the sending node, nor the receiving node will be aware of UDP packets that do not arrive at the destination node, since UDP does not provide communication between the nodes. On the other hand, TCP sets up a connection between the source and destination, with a response mechanism f ...
... discarded. Neither the sending node, nor the receiving node will be aware of UDP packets that do not arrive at the destination node, since UDP does not provide communication between the nodes. On the other hand, TCP sets up a connection between the source and destination, with a response mechanism f ...
Chapter 11
... Positive acknowledgment with retransmission is one technique that guarantees reliable delivery of data. Positive acknowledgment requires a recipient to communicate with the source and send back an ACK when the data is received. The sender keeps a record of each data packet, or TCP segment, that it s ...
... Positive acknowledgment with retransmission is one technique that guarantees reliable delivery of data. Positive acknowledgment requires a recipient to communicate with the source and send back an ACK when the data is received. The sender keeps a record of each data packet, or TCP segment, that it s ...
COS 461: Computer Networks Spring 2009 (MW 1:30‐2:50 in CS 105) Mike Freedman Teaching Assistants: WyaI Lloyd and Jeff Terrace
... – Time, day, month, year? In what Wme zone? – Number of seconds since Jan 1, 1970? ...
... – Time, day, month, year? In what Wme zone? – Number of seconds since Jan 1, 1970? ...
SYSTRA Course
... “Always on” / “always connected” After initial “log-on”, user is permanently connected to IP services – Instant access, no further log-on – Flat rate (about $30/mo in the LA area) – User perceived performance: fluctuates (as GPRS users defer to voice users) to a max of 50Kbps ...
... “Always on” / “always connected” After initial “log-on”, user is permanently connected to IP services – Instant access, no further log-on – Flat rate (about $30/mo in the LA area) – User perceived performance: fluctuates (as GPRS users defer to voice users) to a max of 50Kbps ...
Slides for Chapter 3: Networking and Internetworking
... Protocols at this level transmit data in a network representation that is independent of the representations used in individual computers, which may differ. Encryption is also performed in this layer, if required. At this level reliability and adaptation are performed, such as detection of failures ...
... Protocols at this level transmit data in a network representation that is independent of the representations used in individual computers, which may differ. Encryption is also performed in this layer, if required. At this level reliability and adaptation are performed, such as detection of failures ...
Hermes: An Integrated CPU/GPU Microarchitecture for IP Routing
... Limitation of existing GPU based router Memory mapping from CPU’s main memory to GPU’s device memory through PCIe bus with a pick bandwidth of 8GBps • GPU throughput = 30x CPU’s , without memory mapping • Reduced to 5x CPU’s , with memory mapping overhead ...
... Limitation of existing GPU based router Memory mapping from CPU’s main memory to GPU’s device memory through PCIe bus with a pick bandwidth of 8GBps • GPU throughput = 30x CPU’s , without memory mapping • Reduced to 5x CPU’s , with memory mapping overhead ...
Introduction to networking
... Reliability – an error rate of each network link Hop count – the number of routers that a packet must travel through before breaching its destination Cost – an arbitrary value, usually base don bandwidth, monetary expense, or other measurement, that is assigned by an administrator ...
... Reliability – an error rate of each network link Hop count – the number of routers that a packet must travel through before breaching its destination Cost – an arbitrary value, usually base don bandwidth, monetary expense, or other measurement, that is assigned by an administrator ...
SwitchWare
... • Customizable on a per user or per application basis • Individuals can inject programs into the network • Applicable to Internet : overlay or substitution ...
... • Customizable on a per user or per application basis • Individuals can inject programs into the network • Applicable to Internet : overlay or substitution ...
