ppt
... Number of copies often related to content popularity Necessary to make replication and de-replication decisions ...
... Number of copies often related to content popularity Necessary to make replication and de-replication decisions ...
Overlay Network Monitoring and its Applications
... – Limited measurements -> under-constrained system, unidentifiable links ...
... – Limited measurements -> under-constrained system, unidentifiable links ...
Steps to Troubleshoot Database Replication
... Trip Time (RTT). If the RTT is unusally high, check network performance. The nodes are scattered over the Wide Area Network (WAN): Ensure that the nodes have network connecitivty well under 80 ms. If some nodes are not able to join the replication process, increase the parameter to a higher value as ...
... Trip Time (RTT). If the RTT is unusally high, check network performance. The nodes are scattered over the Wide Area Network (WAN): Ensure that the nodes have network connecitivty well under 80 ms. If some nodes are not able to join the replication process, increase the parameter to a higher value as ...
Ch. 8 TCP/IP Suite Error and Control Messages (ICMP)
... unit, a router can fragment the packet. – This means that it splits it into multiple parts which contain enough information for the receiver to glue them together again. – Note that this is not done on a hop-by-hop basis, but once fragmented a packet will not be put back together until it reaches it ...
... unit, a router can fragment the packet. – This means that it splits it into multiple parts which contain enough information for the receiver to glue them together again. – Note that this is not done on a hop-by-hop basis, but once fragmented a packet will not be put back together until it reaches it ...
Large-scale Virtualization in the Emulab Network Testbed
... systems or dynamic IP routing algorithms require large topologies or nodes of high degree for evaluation, yet are not resource-hungry. Second, much research and educational use simply does not need perfect performance fidelity, or does not need it on every run. Third, such multiplexing provides more ...
... systems or dynamic IP routing algorithms require large topologies or nodes of high degree for evaluation, yet are not resource-hungry. Second, much research and educational use simply does not need perfect performance fidelity, or does not need it on every run. Third, such multiplexing provides more ...
슬라이드 1
... ALM hosts have little information about underlying network ALM tree building can be optimized (link/tree stretch) to incur only low penalties compared to IP Multicast ...
... ALM hosts have little information about underlying network ALM tree building can be optimized (link/tree stretch) to incur only low penalties compared to IP Multicast ...
2
... improvement in Tapestry, and show that a large reduction in RDP is possible by adding relatively few additional object pointers into the system. After a brief description of the Tapestry publication and location algorithms in Section 2, Section 3 will outline several optimization strategies. We will ...
... improvement in Tapestry, and show that a large reduction in RDP is possible by adding relatively few additional object pointers into the system. After a brief description of the Tapestry publication and location algorithms in Section 2, Section 3 will outline several optimization strategies. We will ...
Lecture 3
... Surge: What does it do? Small application that organizes nodes in a spanning tree, rooted at the basestation Based on broadcast messages Each node maintains the ID of its parent and its depth in the tree Depth advertised with every message ...
... Surge: What does it do? Small application that organizes nodes in a spanning tree, rooted at the basestation Based on broadcast messages Each node maintains the ID of its parent and its depth in the tree Depth advertised with every message ...
Load-Sensitive Routing of Long-Lived IP Flows
... probability for QoS routing across a range of link-state update periods, where flow durations are sampled from our ISP packet trace (with traffic aggregated to the port level). The flow-size distributions are shown in Figure 2(a), and the details of the experimental set-up are described later in Sec ...
... probability for QoS routing across a range of link-state update periods, where flow durations are sampled from our ISP packet trace (with traffic aggregated to the port level). The flow-size distributions are shown in Figure 2(a), and the details of the experimental set-up are described later in Sec ...
- Lovin Varghese
... • A message that contains a stream of uninterrupted bytes. This message type is for literally encoding a body to match an existing message format. In many cases, it will be possible to use one of the other, self-defining, message types instead. ...
... • A message that contains a stream of uninterrupted bytes. This message type is for literally encoding a body to match an existing message format. In many cases, it will be possible to use one of the other, self-defining, message types instead. ...
Slide 1
... exist? which path to use when forwarding a packet. To determine the best path, the router searches its routing table for a No, only address that the does not know network thatrouter matches the packet’s destination IP address. (later) results from this search: about One ofthat threenetwork. path ...
... exist? which path to use when forwarding a packet. To determine the best path, the router searches its routing table for a No, only address that the does not know network thatrouter matches the packet’s destination IP address. (later) results from this search: about One ofthat threenetwork. path ...
PDF
... node latency measurements on the Internet to determine a corresponding single point in a d-dimensional space for each node. The resulting embedded address, a virtual coordinate, can be used to select nodes. While the network embedding approach is applicable for a wide range of applications, it is ne ...
... node latency measurements on the Internet to determine a corresponding single point in a d-dimensional space for each node. The resulting embedded address, a virtual coordinate, can be used to select nodes. While the network embedding approach is applicable for a wide range of applications, it is ne ...
18. Protocols for QoS Support
... Efforts to marry IP and ATM IP switching (Ipsilon) Tag switching (Cisco) Aggregate route based IP switching (IBM) Cascade (IP navigator) All use standard routing protocols to define paths between end points Assign packets to path as they enter network Use ATM switches to move packets along paths – A ...
... Efforts to marry IP and ATM IP switching (Ipsilon) Tag switching (Cisco) Aggregate route based IP switching (IBM) Cascade (IP navigator) All use standard routing protocols to define paths between end points Assign packets to path as they enter network Use ATM switches to move packets along paths – A ...
TIE Breaking: Tunable Interdomain Egress Selection
... two parts of the routing system separately. Selecting the egress point and computing the forwarding path to the egress point are two very distinct functions, and we believe that they should be decoupled. Paths inside the network should be selected based on some meaningful performance objective, wher ...
... two parts of the routing system separately. Selecting the egress point and computing the forwarding path to the egress point are two very distinct functions, and we believe that they should be decoupled. Paths inside the network should be selected based on some meaningful performance objective, wher ...
Document
... If N knows a better route for a network known by both, R’s routing table is updated Metric (# of hops) is increased by one Router R publishes information increasing in one unit what it is introduced in its routing table. Update messages tx to neighbours. Two ways • Not using split horizon technique: ...
... If N knows a better route for a network known by both, R’s routing table is updated Metric (# of hops) is increased by one Router R publishes information increasing in one unit what it is introduced in its routing table. Update messages tx to neighbours. Two ways • Not using split horizon technique: ...
Intro_to_SS7_Tutorial_Intro to SS7 Signalling
... Support for Intelligent Network (IN) services which require signaling to network elements without voice trunks (e.g., database systems) ...
... Support for Intelligent Network (IN) services which require signaling to network elements without voice trunks (e.g., database systems) ...
Introduction - Communications
... • Solution 2: Minimum-Cost Tree Build a tree that minimizes the total cost of the edges – Good solution if there are multiple senders – Very expensive to compute (not practical for more than 30 nodes) ...
... • Solution 2: Minimum-Cost Tree Build a tree that minimizes the total cost of the edges – Good solution if there are multiple senders – Very expensive to compute (not practical for more than 30 nodes) ...
Route Optimization Part I
... The passive-interface command works differently with the different IP routing protocols that support it. – RIP/IGRP: Can receive updates but doesn’t send. – OSPF: Routing information is neither sent nor received via a passive interface. – OSPF: The network address of the passive interface appears as ...
... The passive-interface command works differently with the different IP routing protocols that support it. – RIP/IGRP: Can receive updates but doesn’t send. – OSPF: Routing information is neither sent nor received via a passive interface. – OSPF: The network address of the passive interface appears as ...
Computer Networks and the Internet
... packet switches, and communication links. End systems—also called hosts—include desktop PCs, laptops, hand-held network devices (including cell phones, PDAs, and BlackBerries), sensors, and servers (such as Web and mail servers). Just as cities are interconnected by a network of roads and intersecti ...
... packet switches, and communication links. End systems—also called hosts—include desktop PCs, laptops, hand-held network devices (including cell phones, PDAs, and BlackBerries), sensors, and servers (such as Web and mail servers). Just as cities are interconnected by a network of roads and intersecti ...
The IETF is organized into 10 Areas with a number of Working
... and transmit such location objects and to allow users to express policies on how these representations are exposed and used. The IETF has also begun working on creating applications that use these capabilities, for emergency services, general real-time communication, and other usages. ...
... and transmit such location objects and to allow users to express policies on how these representations are exposed and used. The IETF has also begun working on creating applications that use these capabilities, for emergency services, general real-time communication, and other usages. ...
ppt - DePaul University
... Ñ Cost of the route is based on hops to the network (number of routers to pass) Ñ Recalculation occurs when links fail ...
... Ñ Cost of the route is based on hops to the network (number of routers to pass) Ñ Recalculation occurs when links fail ...
Document
... TCP/IP Protocol Suite Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. ...
... TCP/IP Protocol Suite Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. ...
Ch11
... 11-7 DISTANCE VECTOR ROUTING Distance vector and link state routing are both interior routing protocols. They can be used inside an autonomous system. Both of these routing protocols become intractable when the domain of operation becomes large. Distance vector routing is subject to instability if ...
... 11-7 DISTANCE VECTOR ROUTING Distance vector and link state routing are both interior routing protocols. They can be used inside an autonomous system. Both of these routing protocols become intractable when the domain of operation becomes large. Distance vector routing is subject to instability if ...