Basic Network Configuration
... To track down the cause of disappearing packets, first run traceroute (covered next) to discover the route that packets are taking to the target host. Then ping the intermediate gateways in sequence to discover which link is dropping packets. To pin down the problem, you need to send a fair number o ...
... To track down the cause of disappearing packets, first run traceroute (covered next) to discover the route that packets are taking to the target host. Then ping the intermediate gateways in sequence to discover which link is dropping packets. To pin down the problem, you need to send a fair number o ...
PART II: Multi-layer TE in Metropolitan Area Networks
... available between source and destination nodes. In this case, the data are sent only through the working path. In case a failure occurs, both the source node and the destination node switch to the other pre-defined path. In this case, a signalling mechanism is required between the source and the des ...
... available between source and destination nodes. In this case, the data are sent only through the working path. In case a failure occurs, both the source node and the destination node switch to the other pre-defined path. In this case, a signalling mechanism is required between the source and the des ...
slides ppt
... • Let xr be the mean bandwidth of flow r [pkts/sec] Let y be the total bandwidth of all flows [pkts/sec] Let C be the total available capacity [pkts/sec] • TCP and the network act so as to solve maximise r U(xr) - P(y,C) over xr0 where y=r xr ...
... • Let xr be the mean bandwidth of flow r [pkts/sec] Let y be the total bandwidth of all flows [pkts/sec] Let C be the total available capacity [pkts/sec] • TCP and the network act so as to solve maximise r U(xr) - P(y,C) over xr0 where y=r xr ...
Skype Network - National Taiwan University
... SC sent a TCP packet to its SN SN gave SC the IP:Port of 4 nodes to query If it could not find the user, it informed the SN over TCP It appears that the SN now asked it to contact 8 different nodes This process continued until the SC found the user or it determined that the user did not exist Th ...
... SC sent a TCP packet to its SN SN gave SC the IP:Port of 4 nodes to query If it could not find the user, it informed the SN over TCP It appears that the SN now asked it to contact 8 different nodes This process continued until the SC found the user or it determined that the user did not exist Th ...
Li , Sheng
... So frame relay is a data link layer protocol that handles multiple virtual circuits. It is also an standard that defines the interconnection process between your router and service provider’s local access switching equipment. And it is a connection-oriented data link technology that is streamline t ...
... So frame relay is a data link layer protocol that handles multiple virtual circuits. It is also an standard that defines the interconnection process between your router and service provider’s local access switching equipment. And it is a connection-oriented data link technology that is streamline t ...
Part I: Introduction
... Ethernet Frame Structure - 2 • Addresses: 6 bytes, frame is received by all adapters on a LAN and dropped if address does not match • Type: indicates the higher layer protocol, mostly IP but others may be supported such as Novell IPX and AppleTalk) • CRC: checked at receiver, if error is detected, ...
... Ethernet Frame Structure - 2 • Addresses: 6 bytes, frame is received by all adapters on a LAN and dropped if address does not match • Type: indicates the higher layer protocol, mostly IP but others may be supported such as Novell IPX and AppleTalk) • CRC: checked at receiver, if error is detected, ...
Flow control and TCP/IP
... through firewall servers that have the ability to screen messages in both directions so that company security is maintained. When part of an intranet is made accessible to ...
... through firewall servers that have the ability to screen messages in both directions so that company security is maintained. When part of an intranet is made accessible to ...
Protocols used in NM - Test Page for Apache Installation
... The management application calls for the service of the management process The management process calls the program that implements the network management protocol, e.g., SNMP The network management protocol implementation constructs a request packet, which is sent to the management agent The implem ...
... The management application calls for the service of the management process The management process calls the program that implements the network management protocol, e.g., SNMP The network management protocol implementation constructs a request packet, which is sent to the management agent The implem ...
Document
... Communicating parties negotiate which ones to use IPsec defines some ciphers/hash as required in every IPsec implementaion ...
... Communicating parties negotiate which ones to use IPsec defines some ciphers/hash as required in every IPsec implementaion ...
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)
... The OSPF protocol is based on link state routing which means that every node in the network constructs a map of the network connectivity in the form of a graph. This graph shows which nodes are connected to which other nodes and then each node independently calculates the next best logical path from ...
... The OSPF protocol is based on link state routing which means that every node in the network constructs a map of the network connectivity in the form of a graph. This graph shows which nodes are connected to which other nodes and then each node independently calculates the next best logical path from ...
Document
... • Most home networks have fewer than ten wireless devices connected • Devices share bandwidth when connected to a router • The more devices actively transmitting data, the smaller the portion of the bandwidth each device receives ...
... • Most home networks have fewer than ten wireless devices connected • Devices share bandwidth when connected to a router • The more devices actively transmitting data, the smaller the portion of the bandwidth each device receives ...
private VLANs
... http://www.cisco.com/en/US/tech/tk389/tk621/technologies_tech_not e09186a008009482f.shtml – STP configures meshed topology into a loop-free, tree-like topology. – When the link on a bridge port goes up, STP calculation occurs on that port. The result of the calculation is the transition of the port ...
... http://www.cisco.com/en/US/tech/tk389/tk621/technologies_tech_not e09186a008009482f.shtml – STP configures meshed topology into a loop-free, tree-like topology. – When the link on a bridge port goes up, STP calculation occurs on that port. The result of the calculation is the transition of the port ...
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... designed without explicitly considering QoS of the routes they generate. The number of hops is the most common criterion adopted by such proposed routing protocols. It is becoming increasingly clear that such routing protocols are inadequate for multimedia application, such as video conferencing, wh ...
... designed without explicitly considering QoS of the routes they generate. The number of hops is the most common criterion adopted by such proposed routing protocols. It is becoming increasingly clear that such routing protocols are inadequate for multimedia application, such as video conferencing, wh ...
Bandwidth Aided Topology Awareness in Unstructured P2p Networks
... processing power. Gnutella 0.6 tries to solve this problem using the multi level topology formation, but the problem is in the ultra-peer election process which is a complex issue in the system. The proposed system in this paper considers the inherent heterogeneity and achieves better performance. G ...
... processing power. Gnutella 0.6 tries to solve this problem using the multi level topology formation, but the problem is in the ultra-peer election process which is a complex issue in the system. The proposed system in this paper considers the inherent heterogeneity and achieves better performance. G ...
IPv4/6 - RIT IST - Rochester Institute of Technology
... • Classes can be one flow, multiple flows • All packets belonging to one class are handled identically by the scheduler ...
... • Classes can be one flow, multiple flows • All packets belonging to one class are handled identically by the scheduler ...
Lecture 3: Data Link Layer Security
... Configuring DAI in DHCP Environments • Both Switch A and B are running DAI on VLAN1 where the hosts are located • A DHCP server is connected to Switch A. both hosts acquire IP addresses from the same DHCP server • Switch A has the bindings for Host 1 and Host 2, and Switch B has the binding for Hos ...
... Configuring DAI in DHCP Environments • Both Switch A and B are running DAI on VLAN1 where the hosts are located • A DHCP server is connected to Switch A. both hosts acquire IP addresses from the same DHCP server • Switch A has the bindings for Host 1 and Host 2, and Switch B has the binding for Hos ...
Introduction to networks
... •Unidirectional - require laser and photodetector on both ends for two-way transmissions •Line of sight--requires precise alignment of sender and ...
... •Unidirectional - require laser and photodetector on both ends for two-way transmissions •Line of sight--requires precise alignment of sender and ...
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... – Sends the remote end-‐point the new IP address – Allowing ongoing connecQon to conQnue – Can be used in conjuncQon with Dynamic DNS ...
... – Sends the remote end-‐point the new IP address – Allowing ongoing connecQon to conQnue – Can be used in conjuncQon with Dynamic DNS ...