ppt
... • Problem: a single host can have multiple IP aliases. Probes technically discover router interfaces--not routers themselves • Solution: paths from Mercator to destination host can overlap in the cases of: – Policy differences – Primary and backup paths – Source-routed paths probing from different p ...
... • Problem: a single host can have multiple IP aliases. Probes technically discover router interfaces--not routers themselves • Solution: paths from Mercator to destination host can overlap in the cases of: – Policy differences – Primary and backup paths – Source-routed paths probing from different p ...
Aalborg Universitet Liu, Yaoda; Olsen, Rasmus Løvenstein; Schwefel, Hans-Peter
... • The dynamics of the network is modeled by each node going on and off randomly with the period following a poisson process • The uplink (from client to service provider) and downlink (from service provider to client) delay are modeled by a poisson distribution, the mean of which is proportional to ...
... • The dynamics of the network is modeled by each node going on and off randomly with the period following a poisson process • The uplink (from client to service provider) and downlink (from service provider to client) delay are modeled by a poisson distribution, the mean of which is proportional to ...
EEE449 Computer Networks
... In IGMPv1, hosts could join a multicast group and routers used a timer to unsubscribe group members. IGMPv2 enabled a host to specifically unsubscribe from a group. The first two versions used essentially the following operational model: • Receivers have to subscribe to multicast groups. • Sources d ...
... In IGMPv1, hosts could join a multicast group and routers used a timer to unsubscribe group members. IGMPv2 enabled a host to specifically unsubscribe from a group. The first two versions used essentially the following operational model: • Receivers have to subscribe to multicast groups. • Sources d ...
Liverpool HEP - Site Report June 2010 John Bland, Robert Fay
... • 2 racks (80 nodes) shared with other departments • 18 racks (~700 nodes) primarily for LCG jobs • 1 rack (40 nodes) for general purpose local batch processing • 3 racks retired (Dell nodes replaced with other hardware) • Each rack has two 24 port gigabit switches, 2Gbit/s uplink ...
... • 2 racks (80 nodes) shared with other departments • 18 racks (~700 nodes) primarily for LCG jobs • 1 rack (40 nodes) for general purpose local batch processing • 3 racks retired (Dell nodes replaced with other hardware) • Each rack has two 24 port gigabit switches, 2Gbit/s uplink ...
ppt
... Bandwidth DOS Attacks - Solutions • Link testing – have routers either explicitly identify which hops are involved in attack or use controlled flooding and a network map to perturb attack traffic • Logging – log packets at key routers and postprocess to identify attacker’s path • ICMP traceback – s ...
... Bandwidth DOS Attacks - Solutions • Link testing – have routers either explicitly identify which hops are involved in attack or use controlled flooding and a network map to perturb attack traffic • Logging – log packets at key routers and postprocess to identify attacker’s path • ICMP traceback – s ...
U N I T
... For data grids: • The ability to integrate multiple distributed, heterogeneous, and independently managed data sources. • The ability to provide efficient data transfer mechanisms to provide data where the computation will take place. • The ability to provide necessary data discovery mechanism, whic ...
... For data grids: • The ability to integrate multiple distributed, heterogeneous, and independently managed data sources. • The ability to provide efficient data transfer mechanisms to provide data where the computation will take place. • The ability to provide necessary data discovery mechanism, whic ...
15-744: Computer Networking
... Policy with BGP • BGP provides capability for enforcing various policies • Policies are not part of BGP: they are provided to BGP as configuration information • BGP enforces policies by choosing paths from multiple alternatives and controlling advertisement to other AS’s ...
... Policy with BGP • BGP provides capability for enforcing various policies • Policies are not part of BGP: they are provided to BGP as configuration information • BGP enforces policies by choosing paths from multiple alternatives and controlling advertisement to other AS’s ...
Securing Information Transmission by Redundancy
... • Redundancy has been widely used in other areas – High availability storage – Replicated execution – And many others ...
... • Redundancy has been widely used in other areas – High availability storage – Replicated execution – And many others ...
milcom 2004 - Institute for Human and Machine Cognition
... Sharing Information between Network and Middleware Sharing information between layers is possibly the most common goal of cross-layer strategies. Generally, lower layers will essentially notify upper layers of changes in minimum QoS capabilities as necessary. The middleware benefits from lower level ...
... Sharing Information between Network and Middleware Sharing information between layers is possibly the most common goal of cross-layer strategies. Generally, lower layers will essentially notify upper layers of changes in minimum QoS capabilities as necessary. The middleware benefits from lower level ...
Emergence of a Small World from Local Interactions
... that the simple linking rule of our model leads to smallworld behavior. Intuitively, ᐉ0 , ᐉrand follows from the highly connected “hubs” present in the scale-free networks for p 苷 0.0025. The fact that ᐉ is slightly larger than ᐉrand is due to the fact that, in step (i) of the model, many links are ...
... that the simple linking rule of our model leads to smallworld behavior. Intuitively, ᐉ0 , ᐉrand follows from the highly connected “hubs” present in the scale-free networks for p 苷 0.0025. The fact that ᐉ is slightly larger than ᐉrand is due to the fact that, in step (i) of the model, many links are ...
PPT
... leaves represent regions covered by overlay nodes (labeled by node that covers the region) intermediate nodes represent “split” regions that could be “reformed”, i.e., a leaf can appear at that position siblings are regions that can be merged together (forming the region that is covered by their par ...
... leaves represent regions covered by overlay nodes (labeled by node that covers the region) intermediate nodes represent “split” regions that could be “reformed”, i.e., a leaf can appear at that position siblings are regions that can be merged together (forming the region that is covered by their par ...
DEPARTMENT OF ECE 2-MARK QUESTIONS AND ANSWERS S
... 15. What is the frequency range of Bluetooth devices? The frequency range of Bluetooth device is 2.4 GHZ 16. What is the need of connecting devices? To connect LANs or segments of LAN we use connecting devices. These devices can operate in different layers of internet model. 17. What type of address ...
... 15. What is the frequency range of Bluetooth devices? The frequency range of Bluetooth device is 2.4 GHZ 16. What is the need of connecting devices? To connect LANs or segments of LAN we use connecting devices. These devices can operate in different layers of internet model. 17. What type of address ...
Figure 1.5. Hybrid Wireless Mesh Network
... their wired brethren. The advertised 54 Mbps bandwidth for IEEE 802.11a/g wireless LAN interface is the peak link-layer data rate. When all the overheads, MAC contention, 802.11 headers, 802.11 ACK, packet errors are accounted for the actual goodput available to applications is almost halved. In add ...
... their wired brethren. The advertised 54 Mbps bandwidth for IEEE 802.11a/g wireless LAN interface is the peak link-layer data rate. When all the overheads, MAC contention, 802.11 headers, 802.11 ACK, packet errors are accounted for the actual goodput available to applications is almost halved. In add ...
Please note
... moves one space ahead. For this process to complete, how many bytes are transmitted across the network? Please consider the transport and the network layer overheads only, no link later overhead). Assume no optimization is done (each segment is acknowledged separately). Please draw the timeline of e ...
... moves one space ahead. For this process to complete, how many bytes are transmitted across the network? Please consider the transport and the network layer overheads only, no link later overhead). Assume no optimization is done (each segment is acknowledged separately). Please draw the timeline of e ...
IP2515381543
... wireless network protocol independent on topology of nodes that aims to provide low-cost broadband wireless network for rural regions. Nodes in this protocol communicate using long-distance point topoint wireless links that are established using antenna. For the rural areas like villages, 802.11 MAC ...
... wireless network protocol independent on topology of nodes that aims to provide low-cost broadband wireless network for rural regions. Nodes in this protocol communicate using long-distance point topoint wireless links that are established using antenna. For the rural areas like villages, 802.11 MAC ...
Dynamic Network Selection for Robust Communications – Why Disruption Tolerance Matters
... last two data sources since they manage on local information of the mobile device, although the data accuracy may be slightly worse. Another disadvantage compared to periodic probes is the lack of information on path not being used. In this case, we have to rely on past observations for that network ...
... last two data sources since they manage on local information of the mobile device, although the data accuracy may be slightly worse. Another disadvantage compared to periodic probes is the lack of information on path not being used. In this case, we have to rely on past observations for that network ...
SybilGuard Overview
... with sybil nodes created by a malicious user • A protocol enables honest nodes to accept a large fraction of the other honest nodes • SybilGuard does not increase or decrease the number of edges in the social network as a result of its execution ...
... with sybil nodes created by a malicious user • A protocol enables honest nodes to accept a large fraction of the other honest nodes • SybilGuard does not increase or decrease the number of edges in the social network as a result of its execution ...