Providing Guaranteed Services without Per Flow Management
... • Goal: eliminate per flow state at core routers - eliminate dependence on previous packet deadline • Solution: introduce a slack variable s, such that at each core router packet deadline at previous router + prop delay + s >= deadline of previous packet for every packet • Then eligible time = packe ...
... • Goal: eliminate per flow state at core routers - eliminate dependence on previous packet deadline • Solution: introduce a slack variable s, such that at each core router packet deadline at previous router + prop delay + s >= deadline of previous packet for every packet • Then eligible time = packe ...
Document
... over a network using the popular TCP/IP protocol. A way to access storage across an IP network as though it was locally attached. Transports SCSI protocol commands and data across an IP network Cisco and IBM co-authored original iSCSI protocol draft iSCSI Protocol is a standard maintained by the IET ...
... over a network using the popular TCP/IP protocol. A way to access storage across an IP network as though it was locally attached. Transports SCSI protocol commands and data across an IP network Cisco and IBM co-authored original iSCSI protocol draft iSCSI Protocol is a standard maintained by the IET ...
Packet Filtering
... NAT device, located at the boundary between the corporate network and the public Internet, manages a pool of public IP addresses When a host from the corporate network sends an IP datagram to a host in the public Internet, the NAT device dynamically picks a public IP address from the address pool, a ...
... NAT device, located at the boundary between the corporate network and the public Internet, manages a pool of public IP addresses When a host from the corporate network sends an IP datagram to a host in the public Internet, the NAT device dynamically picks a public IP address from the address pool, a ...
Migrate talk slides - Networks and Mobile Systems
... http://nms.lcs.mit.edu/software/ Migrate project Web page: http://nms.lcs.mit.edu/projects/migrate/ ...
... http://nms.lcs.mit.edu/software/ Migrate project Web page: http://nms.lcs.mit.edu/projects/migrate/ ...
Functions of the Layers
... • The complexity of the communication task is reduced by using multiple protocol layers: • Each protocol is implemented independently • Each protocol is responsible for a specific subtask • Protocols are grouped in a hierarchy • A structured set of protocols is called a communications architecture o ...
... • The complexity of the communication task is reduced by using multiple protocol layers: • Each protocol is implemented independently • Each protocol is responsible for a specific subtask • Protocols are grouped in a hierarchy • A structured set of protocols is called a communications architecture o ...
CPS 214: Networks and Distributed Systems Lecture 4
... • Two trailing bits (A, C) after each frame – A recipient sets A bit when it sees the frame – Sets C bit after it copies the frame back to its adaptor – If a sender does not see both bits set, retransmits A=0, C=0: the intended recipient is not functioning or absent A=1, C=0: for some reason (e. ...
... • Two trailing bits (A, C) after each frame – A recipient sets A bit when it sees the frame – Sets C bit after it copies the frame back to its adaptor – If a sender does not see both bits set, retransmits A=0, C=0: the intended recipient is not functioning or absent A=1, C=0: for some reason (e. ...
Networking II
... • Two protocols are widely used – User Datagram Protocol (UDP) – Transport Control Protocol (TCP) ...
... • Two protocols are widely used – User Datagram Protocol (UDP) – Transport Control Protocol (TCP) ...
access control list
... You're the systems administrator at Testing, and you create the following access control lists. access-list101 deny tcp 5.1.1.10 0.0.0.0 5.1.3.0 0.0.0.255 eq telnet access-list101 permit any any You then enter the command "ip access-group 101 in" to apply access control list 101 to router TK1s e0 in ...
... You're the systems administrator at Testing, and you create the following access control lists. access-list101 deny tcp 5.1.1.10 0.0.0.0 5.1.3.0 0.0.0.255 eq telnet access-list101 permit any any You then enter the command "ip access-group 101 in" to apply access control list 101 to router TK1s e0 in ...
Experiences with Fine-grained Distributed Supercomputing on a 10G Testbed
... heterogeneous nature of our DAS-3 grid – as is the case for most grids – we need to make sure that the faster-running CPUs will not overwhelm the slower ones with an almost infinite stream of asynchronous work to be performed. We found this quickly leads to unrestricted job queue growth, eventually ...
... heterogeneous nature of our DAS-3 grid – as is the case for most grids – we need to make sure that the faster-running CPUs will not overwhelm the slower ones with an almost infinite stream of asynchronous work to be performed. We found this quickly leads to unrestricted job queue growth, eventually ...
3rd Edition: Chapter 1
... still an unsolved problem (chapter 7) Common practice: over-provision ...
... still an unsolved problem (chapter 7) Common practice: over-provision ...
2.2 2-1 LAYERED TASKS We use the concept of layers in our daily
... We use the concept of layers in our daily life. As an example, let us consider two friends who communicate through postal mail. The process of sending a letter to a friend would be complex if there were no services available from the post office. ...
... We use the concept of layers in our daily life. As an example, let us consider two friends who communicate through postal mail. The process of sending a letter to a friend would be complex if there were no services available from the post office. ...
SID :
... binding of remote programs possible. RPC server programs use ephemeral ports – thus the calling/client routine needs to access a well know port to be able to find those ports. Servers register themselves with a registrar - the port mapper (called rpcbind in Suns SVR4 and other systems using TI-RPC). ...
... binding of remote programs possible. RPC server programs use ephemeral ports – thus the calling/client routine needs to access a well know port to be able to find those ports. Servers register themselves with a registrar - the port mapper (called rpcbind in Suns SVR4 and other systems using TI-RPC). ...
NetworkSecurity
... using spoofed IP address of trusted host T. – V will send responses to T. – T will discard responses as replies to packets that it never send. – A cannot see any of the reply packets. – A must be able to ignore or predict responses. ...
... using spoofed IP address of trusted host T. – V will send responses to T. – T will discard responses as replies to packets that it never send. – A cannot see any of the reply packets. – A must be able to ignore or predict responses. ...
Network
... this leads to contention (connection based limits input) • Solution: prevent packets from entering until contention is reduced (e.g., freeway on-ramp metering lights) • Options: – Packet discarding: If packet arrives at switch and there is no room in buffer, the packet is discarded (e.g., UDP) – Flo ...
... this leads to contention (connection based limits input) • Solution: prevent packets from entering until contention is reduced (e.g., freeway on-ramp metering lights) • Options: – Packet discarding: If packet arrives at switch and there is no room in buffer, the packet is discarded (e.g., UDP) – Flo ...
TCP/IP Networks - Northern Kentucky University
... 1. Breaks data into best-sized chunks. 2. After sending segment, maintains timer; if no ACK within time limit, resends segment. 3. Sends ACK on receipt of packets. 4. Discards pkts on bad checkum of header and data. 5. Receiver resequences TCP segments so data arrives in order sent. 6. Receiver disc ...
... 1. Breaks data into best-sized chunks. 2. After sending segment, maintains timer; if no ACK within time limit, resends segment. 3. Sends ACK on receipt of packets. 4. Discards pkts on bad checkum of header and data. 5. Receiver resequences TCP segments so data arrives in order sent. 6. Receiver disc ...
ppt
... • Server responds with SYNACK keeps state about TCP half-open connection • Eventually server memory is exhausted with this state ...
... • Server responds with SYNACK keeps state about TCP half-open connection • Eventually server memory is exhausted with this state ...
Document
... UDP only provides basic functions:port addr, checksum, length. It does not provide any sequencing or reordering functions, can not specify the damaged packet Ya Bao ...
... UDP only provides basic functions:port addr, checksum, length. It does not provide any sequencing or reordering functions, can not specify the damaged packet Ya Bao ...
IPn3G - JOSH Transportation Systems
... TCP (Transmission Control Protocol) – Unlike UDP, TCP does provide sequencing information and is connection-oriented; a more reliable protocol, particularly when large amounts of data are being communicated. Requires more bandwidth than UDP. TCP/UDP Port - A UDP or TCP port is an application end-poi ...
... TCP (Transmission Control Protocol) – Unlike UDP, TCP does provide sequencing information and is connection-oriented; a more reliable protocol, particularly when large amounts of data are being communicated. Requires more bandwidth than UDP. TCP/UDP Port - A UDP or TCP port is an application end-poi ...
Review related concept in Computer Networks
... • even that it exists • The client should always know something about the server • at least where it is located 1. Client sends request ...
... • even that it exists • The client should always know something about the server • at least where it is located 1. Client sends request ...
Welcome to the Cloud
... Basically, Kahn and Cerf created a second layer of networking on top of single networks. This required the creation of a parallel set of concepts for single networks and internets. Single networks and internets use similar concepts but give these concepts different names. It is important for you to ...
... Basically, Kahn and Cerf created a second layer of networking on top of single networks. This required the creation of a parallel set of concepts for single networks and internets. Single networks and internets use similar concepts but give these concepts different names. It is important for you to ...