Delay/Disruption Tolerant Networks
... • Primary difference involves routing, reliability and security • E-mail depends on an underlying layer’s routing – Cannot generally move messages ‘closer’ to their destinations in a partitioned network – E-mail protocols are not disconnection-tolerant or efficient for long RTTs due to “chattiness” ...
... • Primary difference involves routing, reliability and security • E-mail depends on an underlying layer’s routing – Cannot generally move messages ‘closer’ to their destinations in a partitioned network – E-mail protocols are not disconnection-tolerant or efficient for long RTTs due to “chattiness” ...
How the TCP/IP Protocol Works
... • Sender can send 4 packets of data without ACK – When sender gets ACK then can send another packet – Window = unacknowledged packets/bytes ...
... • Sender can send 4 packets of data without ACK – When sender gets ACK then can send another packet – Window = unacknowledged packets/bytes ...
CH 02 -DCC10e
... • Relies on next lower layer for primitive functions • Provides services to the next higher layer • Changes in one layer should not require changes in other layers ...
... • Relies on next lower layer for primitive functions • Provides services to the next higher layer • Changes in one layer should not require changes in other layers ...
slides
... Elastic applications that use TCP take advantage of built in congestion control Most multimedia applications use UDP for transmitting media streams It is left to the discretion of the application to dynamically adapt to congestion To remove these shortcomings an enhanced internet service model would ...
... Elastic applications that use TCP take advantage of built in congestion control Most multimedia applications use UDP for transmitting media streams It is left to the discretion of the application to dynamically adapt to congestion To remove these shortcomings an enhanced internet service model would ...
ppt
... • Primary difference involves routing, reliability and security • E-mail depends on an underlying layer’s routing – Cannot generally move messages ‘closer’ to their destinations in a partitioned network – E-mail protocols are not disconnection-tolerant or efficient for long RTTs due to “chattiness” ...
... • Primary difference involves routing, reliability and security • E-mail depends on an underlying layer’s routing – Cannot generally move messages ‘closer’ to their destinations in a partitioned network – E-mail protocols are not disconnection-tolerant or efficient for long RTTs due to “chattiness” ...
Chapter 5
... All connections coming from the Internet must be encrypted as well as connections where sensitive data can be transmitted Ideally you want all traffic on your network to be ...
... All connections coming from the Internet must be encrypted as well as connections where sensitive data can be transmitted Ideally you want all traffic on your network to be ...
Networked Applications (sockets)
... Do a little work on one request, then switch to another Small tasks, like reading HTTP request, locating the associated file, reading the disk, transmitting parts of the response, etc. ...
... Do a little work on one request, then switch to another Small tasks, like reading HTTP request, locating the associated file, reading the disk, transmitting parts of the response, etc. ...
Lecture 1
... • Specifies the exact path a packet must go for up to the first 9 hops • It is strict because it must go through this path or not at all. • Ex: Strict Source Route through 1,4,3 ...
... • Specifies the exact path a packet must go for up to the first 9 hops • It is strict because it must go through this path or not at all. • Ex: Strict Source Route through 1,4,3 ...
Internet
... Time-to-live (8 bits): this number is decreased by one in each router along the path. If number zero is reached in a router, the IP datagram is discarded and the router sends an ICMP message (TTL expired) to the source of the datagram. ...
... Time-to-live (8 bits): this number is decreased by one in each router along the path. If number zero is reached in a router, the IP datagram is discarded and the router sends an ICMP message (TTL expired) to the source of the datagram. ...
Quality of Service
... The exit gateway must know when it has received all the pieces, so that either a count field or an "end of packet" bit must be included in each packet. All packets must exit via the same gateway. Therefore, some performance may be lost. The overhead required to repeatedly reassemble and then refragm ...
... The exit gateway must know when it has received all the pieces, so that either a count field or an "end of packet" bit must be included in each packet. All packets must exit via the same gateway. Therefore, some performance may be lost. The overhead required to repeatedly reassemble and then refragm ...
Introduction to Distributed Systems and Networking
... Physical Layer: electrical details of bits on the wire Data Link: sending “frames” of bits and error detection Network Layer:” routing packets to the destination Transport Layer: reliable transmission of messages, disassembly/assembly, ordering, retransmission of lost packets • Session Layer; really ...
... Physical Layer: electrical details of bits on the wire Data Link: sending “frames” of bits and error detection Network Layer:” routing packets to the destination Transport Layer: reliable transmission of messages, disassembly/assembly, ordering, retransmission of lost packets • Session Layer; really ...
powerpoint slides - TAMU Computer Science Faculty Pages
... • Guaranteed QoS is independent from connection establishment protocol or flow identification mechanism – RSVP – manual configuration – SNMP • However: Guaranteed QoS only possible if every service element supports in the path supports it. • Guaranteed service guarantees: – End-to-end delays – Queue ...
... • Guaranteed QoS is independent from connection establishment protocol or flow identification mechanism – RSVP – manual configuration – SNMP • However: Guaranteed QoS only possible if every service element supports in the path supports it. • Guaranteed service guarantees: – End-to-end delays – Queue ...
Interprocess Communication
... number of packets being dropped or lost. For integrity, messages must arrive uncorrupted and without duplication. ...
... number of packets being dropped or lost. For integrity, messages must arrive uncorrupted and without duplication. ...
beihangjuly04 - Digital Science Center
... • Reliable order-preserving “Optimized” Message transport (based on performance measurement) in heterogeneous multi-link fashion with TCP, UDP, SSL, HTTP, and will add GridFTP • General publish-subscribe including JMS & JXTA and support for RTP-based audio/video conferencing • Distributed XML event ...
... • Reliable order-preserving “Optimized” Message transport (based on performance measurement) in heterogeneous multi-link fashion with TCP, UDP, SSL, HTTP, and will add GridFTP • General publish-subscribe including JMS & JXTA and support for RTP-based audio/video conferencing • Distributed XML event ...
PPT - EECS
... (directory changes, file deletion, file renaming, etc.) is sent over a separate TCP connection. The “out-of-band” and “inband” channels use ...
... (directory changes, file deletion, file renaming, etc.) is sent over a separate TCP connection. The “out-of-band” and “inband” channels use ...
Internet Control Message Protocol (ICMP) Chapter 7
... the contents of their routing tables • Hosts listen for these messages to acquire routing information • A router solicitation may be sent by a host when it starts up. This is a request for immediate ads ...
... the contents of their routing tables • Hosts listen for these messages to acquire routing information • A router solicitation may be sent by a host when it starts up. This is a request for immediate ads ...
SIP questions - Columbia University
... Not well defined if several in one AS basically, an inter-domain service location problem IETF tool kit for distributed solutions: SLP (with extension in progress) DNS SRV/NAPTR (see SIP) Probably not: multicast, anycast, LDAP ...
... Not well defined if several in one AS basically, an inter-domain service location problem IETF tool kit for distributed solutions: SLP (with extension in progress) DNS SRV/NAPTR (see SIP) Probably not: multicast, anycast, LDAP ...
Games and the Impossibility of Realizable Ideal Functionality
... Sends packets to A that resemble B’s transmission E cannot receive, but may execute commands on A ...
... Sends packets to A that resemble B’s transmission E cannot receive, but may execute commands on A ...
Implementation of the Gnutella protocol in Python
... If the existing node is ready, should respond with GNUTELLA OK\n\n Any other response means that the node has rejected the connection. The annotated version of the protocol [4] remarks that the servent should accept not only \n characters, but also \r or \r\n characters at the end of each string. In ...
... If the existing node is ready, should respond with GNUTELLA OK\n\n Any other response means that the node has rejected the connection. The annotated version of the protocol [4] remarks that the servent should accept not only \n characters, but also \r or \r\n characters at the end of each string. In ...
The Internet Protocols
... Host portion of address partitioned into subnet number and host number Local routers route within subnetted network Subnet mask indicates which bits are subnet number and which are host number ...
... Host portion of address partitioned into subnet number and host number Local routers route within subnetted network Subnet mask indicates which bits are subnet number and which are host number ...