Consider the queuing delay in a router buffer (preceding an
... generates a N bit unit of data every k time units, where k is small and fixed). Also, when such an application starts, it will stay on for relatively long period of time. Answer the following questions, briefly justifying your answer: 1) Would a packet-switched network or a circuit-switched network ...
... generates a N bit unit of data every k time units, where k is small and fixed). Also, when such an application starts, it will stay on for relatively long period of time. Answer the following questions, briefly justifying your answer: 1) Would a packet-switched network or a circuit-switched network ...
Overview
... La/R ~ 0: avg. queueing delay small La/R -> 1: avg. queueing delay large La/R > 1: more “work” arriving than can be serviced, average delay infinite! ...
... La/R ~ 0: avg. queueing delay small La/R -> 1: avg. queueing delay large La/R > 1: more “work” arriving than can be serviced, average delay infinite! ...
TCP TRANSMISSION CONTROL PROTOCOL INTRODUCTION TO TCP, THE INTERNET'S
... N.B.: The size of application data chunks (data units passed over socket interface) may be different on the sending and receiving side; the segments sent by TCP may again have different sizes. TCP error control provides reliable transmission (packet order preservation, retransmissions in case of t ...
... N.B.: The size of application data chunks (data units passed over socket interface) may be different on the sending and receiving side; the segments sent by TCP may again have different sizes. TCP error control provides reliable transmission (packet order preservation, retransmissions in case of t ...
Document
... TCP (Transmission Control Protocol) •the primary Internet transport protocol (layer 4) • accepts messages of any length from the upperlayer protocols • provides transportation to a TCP peer • Connection oriented (more reliable than IP) • Port address is used to determine which connection a packet is ...
... TCP (Transmission Control Protocol) •the primary Internet transport protocol (layer 4) • accepts messages of any length from the upperlayer protocols • provides transportation to a TCP peer • Connection oriented (more reliable than IP) • Port address is used to determine which connection a packet is ...
ppt
... • Di < b/r, (where r may be much larger than average rate) • Assumes that r < link speed at any router • All sources limiting themselves to r will result in no network queuing ...
... • Di < b/r, (where r may be much larger than average rate) • Assumes that r < link speed at any router • All sources limiting themselves to r will result in no network queuing ...
TCP/IP Stack Library Overview
... The Network Control Module enters an exclusive Kernel mode before calling the HAL to send data to the TCP/IP stack. Two different methods are available to prevent other modules from reentering the stack. Task Priority Method The fastest method for maintaining exclusivity in Kernel mode is to raise t ...
... The Network Control Module enters an exclusive Kernel mode before calling the HAL to send data to the TCP/IP stack. Two different methods are available to prevent other modules from reentering the stack. Task Priority Method The fastest method for maintaining exclusivity in Kernel mode is to raise t ...
Immediate ECN
... – shift the job of smoothing congestion signals from network to host • the network signals ECN with no smoothing delay • the transport can hide bursts of ECN signals from itself ...
... – shift the job of smoothing congestion signals from network to host • the network signals ECN with no smoothing delay • the transport can hide bursts of ECN signals from itself ...
Troubleshooting Scenario Two
... • Packet Sniffer – A.k.a. protocol analyzer or packet analyzer – Intercepts and logs network packets – Many choices – Software example: Wireshark – Dedicated hardware devices ...
... • Packet Sniffer – A.k.a. protocol analyzer or packet analyzer – Intercepts and logs network packets – Many choices – Software example: Wireshark – Dedicated hardware devices ...
of MARCH with MACA
... Reduction in the control overhead is a function of the route length Ad hoc route of L hops The number of handshakes needed to send a data packet from the source to destination 2L in MACA , L in MACA-BI, and (L+1) in MARCH If L is large, MARCH will have very similar number of handshakes as in ...
... Reduction in the control overhead is a function of the route length Ad hoc route of L hops The number of handshakes needed to send a data packet from the source to destination 2L in MACA , L in MACA-BI, and (L+1) in MARCH If L is large, MARCH will have very similar number of handshakes as in ...
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)
... Congestion Control in MANETs using Hybrid Routing Protocol scalability, robustness and adaptability to large scale mobile ad hoc networks compared with some well-known routing protocols, e.g. AODV, DSR, and CBRP. AODV and OLSR are combined to form AOHR (AODV and OLSR hybrid routing) [4]. Here the c ...
... Congestion Control in MANETs using Hybrid Routing Protocol scalability, robustness and adaptability to large scale mobile ad hoc networks compared with some well-known routing protocols, e.g. AODV, DSR, and CBRP. AODV and OLSR are combined to form AOHR (AODV and OLSR hybrid routing) [4]. Here the c ...
CMPT 371: Chapter 1 - Simon Fraser University
... timeout(n): retransmit pkt n and all higher seq # pkts in window i.e., go back to n ...
... timeout(n): retransmit pkt n and all higher seq # pkts in window i.e., go back to n ...
Document
... • The transport layer maintains the true endto-end connection, whereas the lower layer is completely ignorant of this end-to-end semantic. ...
... • The transport layer maintains the true endto-end connection, whereas the lower layer is completely ignorant of this end-to-end semantic. ...
Document
... Network Monitoring is vital Development of new TCP stacks and non-TCP protocols is required Multi-Gigabit transfers are possible and stable on current networks Complementary provision of packet IP & λ-Networks is needed The performance of the end host / disks is really important Application design c ...
... Network Monitoring is vital Development of new TCP stacks and non-TCP protocols is required Multi-Gigabit transfers are possible and stable on current networks Complementary provision of packet IP & λ-Networks is needed The performance of the end host / disks is really important Application design c ...
Reorder Notifying TCP (RN-TCP) with Explicit Packet Drop Notification (EPDN)
... The DSACK-TA algorithm uses cost functions that heuristically increase or decrease the FA ratio such that the throughput is maximized for a connection experiencing reordering. The FA ratio will increase when false retransmits occur and the FA ratio will decrease when there are significant timeouts. ...
... The DSACK-TA algorithm uses cost functions that heuristically increase or decrease the FA ratio such that the throughput is maximized for a connection experiencing reordering. The FA ratio will increase when false retransmits occur and the FA ratio will decrease when there are significant timeouts. ...
PGTP: Power Aware Game Transport Protocol for Multi
... headers. Since most game packets are less than 32 bytes, more than half of the packet contains non-data and this makes SCTP very inefficient. SCTP do not support intermittent connection failures which are common in mobile environments and also a required feature for conserving power. Custom modifica ...
... headers. Since most game packets are less than 32 bytes, more than half of the packet contains non-data and this makes SCTP very inefficient. SCTP do not support intermittent connection failures which are common in mobile environments and also a required feature for conserving power. Custom modifica ...
3rd Edition: Chapter 1
... Another “cost” of congestion: when packet dropped, any “upstream transmission capacity used for that packet was wasted! Introduction ...
... Another “cost” of congestion: when packet dropped, any “upstream transmission capacity used for that packet was wasted! Introduction ...
Network Fundamentals
... Most communications are handled using TCP TCP is reliable Acknowledgements indicate delivery of data Checksums are used to detect corrupted data Sequence numbers detect missing, or mis-sequenced data Corrupted data is retransmitted after a timeout Mis-sequenced data is re-sequenced Flow control prev ...
... Most communications are handled using TCP TCP is reliable Acknowledgements indicate delivery of data Checksums are used to detect corrupted data Sequence numbers detect missing, or mis-sequenced data Corrupted data is retransmitted after a timeout Mis-sequenced data is re-sequenced Flow control prev ...
Introduction - Ilam university
... In fragmentation, IP copy the original header and only modify The length, which is the new length, and offset. Offset is used for reassembly. Note: Fragmentation may degrade the network performance. TCP implement “Path MTU discovery”. It start with large packet and with DF set flag, if it passed, ...
... In fragmentation, IP copy the original header and only modify The length, which is the new length, and offset. Offset is used for reassembly. Note: Fragmentation may degrade the network performance. TCP implement “Path MTU discovery”. It start with large packet and with DF set flag, if it passed, ...
1-Introduction :
... The Time-to-Live (TTL) is an 8-bit binary value that indicates the remaining "life" of the packet. The TTL value is decreased by at least one each time the packet is processed by a router (that is, each hop). When the value becomes zero, the router discards or drops the packet and it is removed from ...
... The Time-to-Live (TTL) is an 8-bit binary value that indicates the remaining "life" of the packet. The TTL value is decreased by at least one each time the packet is processed by a router (that is, each hop). When the value becomes zero, the router discards or drops the packet and it is removed from ...
slides - network systems lab @ sfu
... timeout(n): retransmit pkt n and all higher seq # pkts in window i.e., go back to n ...
... timeout(n): retransmit pkt n and all higher seq # pkts in window i.e., go back to n ...