sumit_basu5QA - CIS @ Temple University
... sequentially. If the service is reliable, the receiver confirms correct receipt of each frame by sending back acknowledgement frame. This layer also handles the issue of keeping a fast transmitter from drowning a slow receiver in data. The Network Layer controls the operation of the subnet. A key de ...
... sequentially. If the service is reliable, the receiver confirms correct receipt of each frame by sending back acknowledgement frame. This layer also handles the issue of keeping a fast transmitter from drowning a slow receiver in data. The Network Layer controls the operation of the subnet. A key de ...
Internet Control Message Protocol (ICMP) Chapter 7
... error information between host and router • ICMP helps to keep the network running when a router goes off line • All messages are carried as IP datagrams • Dynamic routers use ICMP messages to announce the contents of their routing tables • Hosts listen for these messages to acquire routing informat ...
... error information between host and router • ICMP helps to keep the network running when a router goes off line • All messages are carried as IP datagrams • Dynamic routers use ICMP messages to announce the contents of their routing tables • Hosts listen for these messages to acquire routing informat ...
Reorder Density (RD): A Formal, Comprehensive Metric for Packet Reordering
... IP telephony, an out-of-order packet that arrives after the elapse of playback time is treated as lost thereby decreasing the perceived quality of voice. To recover from reordering, the out-of-sequence packets are buffered until they can be played back in sequence to the application. Thus, an increa ...
... IP telephony, an out-of-order packet that arrives after the elapse of playback time is treated as lost thereby decreasing the perceived quality of voice. To recover from reordering, the out-of-sequence packets are buffered until they can be played back in sequence to the application. Thus, an increa ...
Performance Evaluation of Black hole Attack in MANET and
... already have a route, it broadcasts a route request (RREQ) packet across the network. Nodes receiving this packet update their information for the source node and set up backwards pointers to the source node in the route tables. In addition to the source node's IP address, current sequence number, a ...
... already have a route, it broadcasts a route request (RREQ) packet across the network. Nodes receiving this packet update their information for the source node and set up backwards pointers to the source node in the route tables. In addition to the source node's IP address, current sequence number, a ...
SmartRE: An Architecture for Coordinated Network
... Processing constraints MemOps & DRAM speed 2GB cache per RE device ...
... Processing constraints MemOps & DRAM speed 2GB cache per RE device ...
22.3 Figure 22.1 Direct and indirect delivery 22.4 22
... Show the forwarding process if a packet arrives at R1 in Figure 22.6 with the destination address 180.70.65.140. Solution The router performs the following steps: 1. The first mask (/26) is applied to the destination address. The result is 180.70.65.128, which does not match the corresponding networ ...
... Show the forwarding process if a packet arrives at R1 in Figure 22.6 with the destination address 180.70.65.140. Solution The router performs the following steps: 1. The first mask (/26) is applied to the destination address. The result is 180.70.65.128, which does not match the corresponding networ ...
16.36: Communication Systems Engineering Lecture 1: Introduction Eytan Modiano
... It is responsible for routing and flow control between networks, so looks like a network layer to the end-to-end transport layer ...
... It is responsible for routing and flow control between networks, so looks like a network layer to the end-to-end transport layer ...
Example # 1
... which contains 64 addresses. The organization has three offices and needs to divide the addresses into three subblocks of 32, 16, and 16 addresses. We can find the new masks by using the following arguments: 1. Suppose the mask for the first subnet is n1, then 2^(32- n1) must be 32, which means that ...
... which contains 64 addresses. The organization has three offices and needs to divide the addresses into three subblocks of 32, 16, and 16 addresses. We can find the new masks by using the following arguments: 1. Suppose the mask for the first subnet is n1, then 2^(32- n1) must be 32, which means that ...
paper
... tions, here applied to optical OFDM systems to increase the tolerance against the bit errors caused by noise and other fiber effects. [5] analytically evaluated BER performance of OFDM system that are intensity modulated in presence of baseband distortion at the transmitter and noise at the receiver ...
... tions, here applied to optical OFDM systems to increase the tolerance against the bit errors caused by noise and other fiber effects. [5] analytically evaluated BER performance of OFDM system that are intensity modulated in presence of baseband distortion at the transmitter and noise at the receiver ...
ppt - Course Website Directory
... Each packet contains a sequence number that is incremented for each new LSA packet sent. Each router keeps track of all the (source router, sequence) pairs it sees. When a new LSA packet comes in, it is checked against the pairs. If the received packet is new, it is forwarded on all the links except ...
... Each packet contains a sequence number that is incremented for each new LSA packet sent. Each router keeps track of all the (source router, sequence) pairs it sees. When a new LSA packet comes in, it is checked against the pairs. If the received packet is new, it is forwarded on all the links except ...
Performance and Introduction to Queue theory
... “Circuit switching is rarely used for data networks, ... because of very inefficient use of the links” - Gallager ...
... “Circuit switching is rarely used for data networks, ... because of very inefficient use of the links” - Gallager ...
Ad-hoc networks
... with another node that is immediately within radio range To communicate with nodes outside its own radio range an intermediate node is used to forward the packet The network is self-organizing and adaptive (autonomous distributed control is required) Nodes are able to detect the presence of other no ...
... with another node that is immediately within radio range To communicate with nodes outside its own radio range an intermediate node is used to forward the packet The network is self-organizing and adaptive (autonomous distributed control is required) Nodes are able to detect the presence of other no ...
GPRS
... Connection the BSS and the SGSN Allocation resources to a user during the periods when data are actually delivered LLC - Convey information - Logical link connection with sequence control, flow control, detection of transmission, format…. - Maintain ciphered data link - GPRS Mobility Managemen ...
... Connection the BSS and the SGSN Allocation resources to a user during the periods when data are actually delivered LLC - Convey information - Logical link connection with sequence control, flow control, detection of transmission, format…. - Maintain ciphered data link - GPRS Mobility Managemen ...
ppt
... Hard handoff • Initiated by the mobile host (MH). • Based on signal strength measurements of Beacon Signal from the BS. • MH has capability to listen to only one BS at a time. • During the Handoff Latency the downlink packets are lost. • Not suitable for applications where loss of packets are not ...
... Hard handoff • Initiated by the mobile host (MH). • Based on signal strength measurements of Beacon Signal from the BS. • MH has capability to listen to only one BS at a time. • During the Handoff Latency the downlink packets are lost. • Not suitable for applications where loss of packets are not ...
Packet-Switching Networks
... set of best paths for routing packets requires the collaboration of network elements Forwarding: transfer of packets from NE inputs to outputs Priority & Scheduling: determining order of packet transmission in each NE Optional: congestion control, segmentation & reassembly, security ...
... set of best paths for routing packets requires the collaboration of network elements Forwarding: transfer of packets from NE inputs to outputs Priority & Scheduling: determining order of packet transmission in each NE Optional: congestion control, segmentation & reassembly, security ...
Chapter 7 Lecture Presentation
... set of best paths for routing packets requires the collaboration of network elements Forwarding: transfer of packets from NE inputs to outputs Priority & Scheduling: determining order of packet transmission in each NE Optional: congestion control, segmentation & reassembly, security ...
... set of best paths for routing packets requires the collaboration of network elements Forwarding: transfer of packets from NE inputs to outputs Priority & Scheduling: determining order of packet transmission in each NE Optional: congestion control, segmentation & reassembly, security ...
Lecture note 7
... timestamp values wrap around at a much lower frequency than the 32-bit sequence number, on a high-speed network. – The TCP timestamp option is assumed to be used in the TCP header. – Right now in FreeeBSD 4.x, one tick used in timestamp represents 1 ms. Therefore, it needs about 24 days (1193 hours) ...
... timestamp values wrap around at a much lower frequency than the 32-bit sequence number, on a high-speed network. – The TCP timestamp option is assumed to be used in the TCP header. – Right now in FreeeBSD 4.x, one tick used in timestamp represents 1 ms. Therefore, it needs about 24 days (1193 hours) ...
Introduction
... Need information on state of links Link up/down; congested; delay or other metrics Need to distribute link state information using a routing protocol What information is exchanged? How often? Exchange with neighbors; Broadcast or flood Need to compute routes based on information Single ...
... Need information on state of links Link up/down; congested; delay or other metrics Need to distribute link state information using a routing protocol What information is exchanged? How often? Exchange with neighbors; Broadcast or flood Need to compute routes based on information Single ...
Chapter8R_backup
... Selects the best that complies with policies Advertises that route to all BGP neighbors BGP assigns a preference order to each path & selects path with highest value; BGP does not keep a cost metric to any path When multiple paths to a destination exist, BGP maintains all of the paths, but only ...
... Selects the best that complies with policies Advertises that route to all BGP neighbors BGP assigns a preference order to each path & selects path with highest value; BGP does not keep a cost metric to any path When multiple paths to a destination exist, BGP maintains all of the paths, but only ...
NetVM: High Performance and Flexible Networking Using
... to, from and between VMs at line rate for all packet sizes, we approach the long-term vision where the line between data centers and network resident “boxes” begins to blur: both software and network infrastructure could be developed, managed, and deployed in the same fashion. Progress has been made ...
... to, from and between VMs at line rate for all packet sizes, we approach the long-term vision where the line between data centers and network resident “boxes” begins to blur: both software and network infrastructure could be developed, managed, and deployed in the same fashion. Progress has been made ...
Interconnected Multiple Software-Defined Network Domains with
... switches out of every port, the switches will repeatedly rebroadcast the broadcast packets flooding the network. Since the Layer 2 header does not support a time to live (TTL) value, if a packet is sent into a looped topology, it can loop forever and bring down the entire network. Border gateway pro ...
... switches out of every port, the switches will repeatedly rebroadcast the broadcast packets flooding the network. Since the Layer 2 header does not support a time to live (TTL) value, if a packet is sent into a looped topology, it can loop forever and bring down the entire network. Border gateway pro ...