TCP Fairness Issues
... • TCP is still a dominant transport layer protocol for conventional and emerging application • We proposed a new TCP scheme over MANET by router-assisted approach in order to improve the performance of TCP. • By assistance of router, our scheme has about 5%~10% throughput improvement and less retran ...
... • TCP is still a dominant transport layer protocol for conventional and emerging application • We proposed a new TCP scheme over MANET by router-assisted approach in order to improve the performance of TCP. • By assistance of router, our scheme has about 5%~10% throughput improvement and less retran ...
Chapter 18 - William Stallings, Data and Computer
... when it times out, a probe segment is sent alerting the receiver that the ACK is lost and be resent. Keep-Alive timer: used in most implementations to prevent long idle connection, each time one end receive segment from other side, timer is reset, otherwise (after 2H) a probe is sent, after severa ...
... when it times out, a probe segment is sent alerting the receiver that the ACK is lost and be resent. Keep-Alive timer: used in most implementations to prevent long idle connection, each time one end receive segment from other side, timer is reset, otherwise (after 2H) a probe is sent, after severa ...
iSCSI Performance
... iSCSI performance in LAN/SAN integrated environment is very important Performance degradation caused by network and disk is possible to be distinguished Ns-2 based simulator can match the real curve closely TCP parameter configuration have big impact on the performance ...
... iSCSI performance in LAN/SAN integrated environment is very important Performance degradation caused by network and disk is possible to be distinguished Ns-2 based simulator can match the real curve closely TCP parameter configuration have big impact on the performance ...
A Feedback Based Scheme For Improving TCP Performance in Ad-Hoc Wireless Networks.
... each can receive the other's transmission. Every MH behaves in a co-operative fashion by acting as a router allowing packets destined to other MHs to pass through it. Thus, if MH h1 needs to send a packet to h2 and h2 is not within the range of h1 , then the packet must be sent to one of h1's neighb ...
... each can receive the other's transmission. Every MH behaves in a co-operative fashion by acting as a router allowing packets destined to other MHs to pass through it. Thus, if MH h1 needs to send a packet to h2 and h2 is not within the range of h1 , then the packet must be sent to one of h1's neighb ...
01_NF_CH04_OSITransportLayer
... The amount of data that a source can transmit before an acknowledgement must be received is called the window size. Window Size is a field in the TCP header that enables the management of lost data and flow control. When TCP at the source host has not received an acknowledgement after a predetermine ...
... The amount of data that a source can transmit before an acknowledgement must be received is called the window size. Window Size is a field in the TCP header that enables the management of lost data and flow control. When TCP at the source host has not received an acknowledgement after a predetermine ...
CS412 Introduction to Computer Networking & Telecommunication
... Router knows detail about routing within its region Router knows nothing about internal structure of other region ...
... Router knows detail about routing within its region Router knows nothing about internal structure of other region ...
photo.net Introduction
... End to End Performance Control congestion via flow control Lock-step is simple solution, but too expensive Too many round trips; one for each datagram in a message; Time: Avg. round trip time * number of datagrams Better to stage/pipeline sending the datagrams and receiving the ACKs Great ...
... End to End Performance Control congestion via flow control Lock-step is simple solution, but too expensive Too many round trips; one for each datagram in a message; Time: Avg. round trip time * number of datagrams Better to stage/pipeline sending the datagrams and receiving the ACKs Great ...
Networks and TCP/IP Part 2
... TCP – Transmission Control Protocol One protocol on how data may be transmitted between addresses TCP: ...
... TCP – Transmission Control Protocol One protocol on how data may be transmitted between addresses TCP: ...
test 1 - answer
... b) Briefly explain how this command can be used as a debugging tool by network managers. [3 marks] The traceroute command discovers the routes packets follow when traveling to their destinations. The traceroute command works by using the error message generated by switch routers when a datagram exce ...
... b) Briefly explain how this command can be used as a debugging tool by network managers. [3 marks] The traceroute command discovers the routes packets follow when traveling to their destinations. The traceroute command works by using the error message generated by switch routers when a datagram exce ...
CH7
... • A reverse lookup zone is a special zone type that allows you to resolve an IP address to a fully qualified domain name. Some applications use reverse lookups to identify computer systems who are actively communicating with them. There is an entire reverse lookup DNS hierarchy on the Internet that ...
... • A reverse lookup zone is a special zone type that allows you to resolve an IP address to a fully qualified domain name. Some applications use reverse lookups to identify computer systems who are actively communicating with them. There is an entire reverse lookup DNS hierarchy on the Internet that ...
EC6802- Wireless Networks VIII semester ECE Two marks
... 5. What is Fast Retransmit algorithm in TCP? During TCP congestion control, when three or more duplicate ACKs are received, the sender does not even wait for a retransmission timer to expire before retransmitting the segment. This process is called the Fast Retransmit Algorithm. 6. What is Congestio ...
... 5. What is Fast Retransmit algorithm in TCP? During TCP congestion control, when three or more duplicate ACKs are received, the sender does not even wait for a retransmission timer to expire before retransmitting the segment. This process is called the Fast Retransmit Algorithm. 6. What is Congestio ...
TCP/IP model
... • ARP is used by a sending host when it knows the IP address of destination but needs the Ethernet address • ARP is a broadcast protocol – every host on the network receives the request – Each host checks the request against it’s IP address • the right one responds ...
... • ARP is used by a sending host when it knows the IP address of destination but needs the Ethernet address • ARP is a broadcast protocol – every host on the network receives the request – Each host checks the request against it’s IP address • the right one responds ...
Module 8 Transport Layer Protocols
... v If you use these slides (e.g., in a class) in substantially unaltered form, that you mention their source (after all, we d like people to use our book!) v If you post any slides in substantially unaltered form on a www site, that you note that they are adapted from (or perhaps identical to) ou ...
... v If you use these slides (e.g., in a class) in substantially unaltered form, that you mention their source (after all, we d like people to use our book!) v If you post any slides in substantially unaltered form on a www site, that you note that they are adapted from (or perhaps identical to) ou ...
csci4211-what-we-learned-last-time
... – Routing: determine next hop to each destination a priori – Forwarding: destination address in packet header, used at each hop to look up for next hop ...
... – Routing: determine next hop to each destination a priori – Forwarding: destination address in packet header, used at each hop to look up for next hop ...
layering
... – (Multiplexing just means sharing) – Useful because users are mostly idle and their traffic is bursty ...
... – (Multiplexing just means sharing) – Useful because users are mostly idle and their traffic is bursty ...
COS 461: Computer Networks Course Review (12 weeks in 80 minutes)
... – If other node sees CTS, will idle for specified period – If other node sees RTS but not CTS, free to send ...
... – If other node sees CTS, will idle for specified period – If other node sees RTS but not CTS, free to send ...
Presentation 10
... Physical: how to transmit bits Data link: how to transmit frames Network: how to route packets Transport: how to send packets end2end Session: how to tie flows together ...
... Physical: how to transmit bits Data link: how to transmit frames Network: how to route packets Transport: how to send packets end2end Session: how to tie flows together ...
Mapping of scalable RDMA protocols to ASIC/FPGA
... • Aggregate of all cores is spanning several FPGAs • Intra-device communication is a issue, need to be careful with PCB design. • We are currently trying to accommodate most of the cores in one FPGA. •Most of the cores will be made available free-of-charge to researchers in non-profit or government ...
... • Aggregate of all cores is spanning several FPGAs • Intra-device communication is a issue, need to be careful with PCB design. • We are currently trying to accommodate most of the cores in one FPGA. •Most of the cores will be made available free-of-charge to researchers in non-profit or government ...
No Slide Title
... Rather than using signatures that precisely identify specific attacks, WatchGuard systems look at what any attack of a certain type (e.g., e-mail) must do to succeed (e.g., auto-execute an attachment). With rule sets, you can choose to allow or deny traffic, or even deny all traffic from a source fo ...
... Rather than using signatures that precisely identify specific attacks, WatchGuard systems look at what any attack of a certain type (e.g., e-mail) must do to succeed (e.g., auto-execute an attachment). With rule sets, you can choose to allow or deny traffic, or even deny all traffic from a source fo ...