PPT
... If collision occurs wait random time and then restart process Non-persistent CSMA: (for nonslotted channels) If channel sensed idle: transmit entire pkt If channel sensed busy, wait random time before trying again. If collision occurs wait random time and then restart process P-Persisten ...
... If collision occurs wait random time and then restart process Non-persistent CSMA: (for nonslotted channels) If channel sensed idle: transmit entire pkt If channel sensed busy, wait random time before trying again. If collision occurs wait random time and then restart process P-Persisten ...
WI-FI TECHNOLOGY: SECURITY ISSUES
... 1.5 Access point varieties The typical Wi-Fi setup contains one or more Access Points (APs) and one or more clients. An AP broadcasts its SSID (Service Set Identifier) via packets that are called beacons, which are broadcasted every 100 ms. The beacons are transmitted at 1 Mbit/s, and are relatively ...
... 1.5 Access point varieties The typical Wi-Fi setup contains one or more Access Points (APs) and one or more clients. An AP broadcasts its SSID (Service Set Identifier) via packets that are called beacons, which are broadcasted every 100 ms. The beacons are transmitted at 1 Mbit/s, and are relatively ...
Lecture No. 10
... Network interface layer encapsulates IP datagram as data area in hardware frame. Hardware ignores IP datagram format. Standards for encapsulation describe details. Standard defines data type for IP datagram, as well as others (e.g., ARP). Receiving protocol stack interprets data area based on frame ...
... Network interface layer encapsulates IP datagram as data area in hardware frame. Hardware ignores IP datagram format. Standards for encapsulation describe details. Standard defines data type for IP datagram, as well as others (e.g., ARP). Receiving protocol stack interprets data area based on frame ...
Link Layer
... • we learned how to do this already (chapter 3)! • seldom used on low bit-error link (fiber, some twisted pair) • wireless links: high error rates • Q: why both link-level and end-end reliability? ...
... • we learned how to do this already (chapter 3)! • seldom used on low bit-error link (fiber, some twisted pair) • wireless links: high error rates • Q: why both link-level and end-end reliability? ...
PDF
... A grid consists of multiple sites, ranging from single machines to large clusters, located around the world. Contrary to more traditional computing environments like clusters or super computers, the network characteristics between grid sites are both very heterogeneous and dynamically changing. Ther ...
... A grid consists of multiple sites, ranging from single machines to large clusters, located around the world. Contrary to more traditional computing environments like clusters or super computers, the network characteristics between grid sites are both very heterogeneous and dynamically changing. Ther ...
Intel Labs Presentation Template
... Skeptic’s view: Nothing new, just distributed computing “rediscovered” or made fashionable. Reality: Distributed computing on a large scale No longer limited to a single LAN or a single domain. Autonomous nodes, no controlling/managing authority. Heterogeneous nodes intermittently connecte ...
... Skeptic’s view: Nothing new, just distributed computing “rediscovered” or made fashionable. Reality: Distributed computing on a large scale No longer limited to a single LAN or a single domain. Autonomous nodes, no controlling/managing authority. Heterogeneous nodes intermittently connecte ...
Lecture 10 Overview!
... can be used for vehicle-to-vehicle and vehicle-toroadside communications. This can be applied for road safety and traffic management.! ...
... can be used for vehicle-to-vehicle and vehicle-toroadside communications. This can be applied for road safety and traffic management.! ...
Traffic Engineering in Software Defined Networks
... of nodes N interconnected by a set of directed links E. We assume that there are n nodes and m links in the network. Let C ⊆ N denote the set of SDN-FEs and D = N \ C denote the non-SDN-FEs. Let w(e) and c(e) denote the OSPF link weight and capacity respectively of a link e ∈ E. We use f (e) to repr ...
... of nodes N interconnected by a set of directed links E. We assume that there are n nodes and m links in the network. Let C ⊆ N denote the set of SDN-FEs and D = N \ C denote the non-SDN-FEs. Let w(e) and c(e) denote the OSPF link weight and capacity respectively of a link e ∈ E. We use f (e) to repr ...
Bus Matrix Communication Architecture Synthesis
... stage is used to handle interrupted bursts, and to register and hold incoming transfers if receiving slaves cannot accept them immediately. The Decode stage generates select signal for appropriate slaves. Unlike in traditional shared bus architectures, arbitration in a bus matrix is not centralized, ...
... stage is used to handle interrupted bursts, and to register and hold incoming transfers if receiving slaves cannot accept them immediately. The Decode stage generates select signal for appropriate slaves. Unlike in traditional shared bus architectures, arbitration in a bus matrix is not centralized, ...
Chapter 6
... • we learned how to do this already (chapter 3)! • seldom used on low bit-error link (fiber, some twisted pair) • wireless links: high error rates ...
... • we learned how to do this already (chapter 3)! • seldom used on low bit-error link (fiber, some twisted pair) • wireless links: high error rates ...
![[PDF]](http://s1.studyres.com/store/data/008812144_1-c896fb643c31e300ef7e68c160b2fe7b-300x300.png)
[PDF]
... HA/CN is brought forward to the time before the layer 2 handover. Thus in our scheme, the completion time of BU of HA/CN is advanced and the tunnel between PAR and NAR still exist shorter than in the fast handover scheme. Therefore, any packets passing to the MN through the tunnel can be sent to the ...
... HA/CN is brought forward to the time before the layer 2 handover. Thus in our scheme, the completion time of BU of HA/CN is advanced and the tunnel between PAR and NAR still exist shorter than in the fast handover scheme. Therefore, any packets passing to the MN through the tunnel can be sent to the ...
Slide
... simultaneously. Techniques to avoid repeated collisions include: CSMA/CD - Carrier sense with multiple access (CSMA); ...
... simultaneously. Techniques to avoid repeated collisions include: CSMA/CD - Carrier sense with multiple access (CSMA); ...
ECE 526
... • Why need another address (IP), if Ethernet address is globally unique? ─ mobility moving the hosts or routers from one network to another ─ easiness to construct a subnet: prefix and suffix ...
... • Why need another address (IP), if Ethernet address is globally unique? ─ mobility moving the hosts or routers from one network to another ─ easiness to construct a subnet: prefix and suffix ...
Slides 2 - USC Upstate: Faculty
... security: all OSPF messages authenticated (to prevent malicious intrusion) multiple same-cost paths allowed (only one path in RIP) for each link, multiple cost metrics for different TOS (e.g., satellite link cost set “low” for best effort ToS; high for real time ToS) integrated uni- and multicast su ...
... security: all OSPF messages authenticated (to prevent malicious intrusion) multiple same-cost paths allowed (only one path in RIP) for each link, multiple cost metrics for different TOS (e.g., satellite link cost set “low” for best effort ToS; high for real time ToS) integrated uni- and multicast su ...
InfiniBand
... – Need information about the incoming interface and the destination and Infiniband only uses destination – Potential solution: » find all possible paths » remove all possible down link following up links in each node » find one output port for each destination – Other solutions: destination renaming ...
... – Need information about the incoming interface and the destination and Infiniband only uses destination – Potential solution: » find all possible paths » remove all possible down link following up links in each node » find one output port for each destination – Other solutions: destination renaming ...
William Stallings Data and Computer Communications
... • Used by Routing Information Protocol (RIP) • Requires transmission of lots of information by each router — Distance vector to all neighbors — Contains estimated path cost to all networks in configuration — Changes take long time to propagate ...
... • Used by Routing Information Protocol (RIP) • Requires transmission of lots of information by each router — Distance vector to all neighbors — Contains estimated path cost to all networks in configuration — Changes take long time to propagate ...
Bus Matrix Communication Architecture Synthesis
... stage is used to handle interrupted bursts, and to register and hold incoming transfers if receiving slaves cannot accept them immediately. The Decode stage generates select signal for appropriate slaves. Unlike in traditional shared bus architectures, arbitration in a bus matrix is not centralized, ...
... stage is used to handle interrupted bursts, and to register and hold incoming transfers if receiving slaves cannot accept them immediately. The Decode stage generates select signal for appropriate slaves. Unlike in traditional shared bus architectures, arbitration in a bus matrix is not centralized, ...
