Slide 1
... format and routing protocol Node: chooses address whose low 24 bits are low 24 bits of node’s Ethernet address and high 8 bits are an unused class-A IP address. Same address at both the Roofnet and IP layers These addresses are meaningful only inside Roofnet Allocates addresses from 192.168.1.x to u ...
... format and routing protocol Node: chooses address whose low 24 bits are low 24 bits of node’s Ethernet address and high 8 bits are an unused class-A IP address. Same address at both the Roofnet and IP layers These addresses are meaningful only inside Roofnet Allocates addresses from 192.168.1.x to u ...
IP Version 6
... • Institutes a de-facto network layer connection-oriented service • NAT box is a single point of failure for all TCP connections it handles • Violates layering • TCP and UDP aren't the only things out there. No other transport layer protocols work over NAT • Application layer use transmission of IP ...
... • Institutes a de-facto network layer connection-oriented service • NAT box is a single point of failure for all TCP connections it handles • Violates layering • TCP and UDP aren't the only things out there. No other transport layer protocols work over NAT • Application layer use transmission of IP ...
Figure 1.5. Hybrid Wireless Mesh Network
... Proposing innovative MAC protocols.[23] New introduced WMN MAC protocols mainly try to provide QoS mechanisms and enhance fairness. Multi-channel MAC protocols Despite significant advances in physical layer technologies, today's wireless LAN still cannot offer the same level of sustained bandwidth ...
... Proposing innovative MAC protocols.[23] New introduced WMN MAC protocols mainly try to provide QoS mechanisms and enhance fairness. Multi-channel MAC protocols Despite significant advances in physical layer technologies, today's wireless LAN still cannot offer the same level of sustained bandwidth ...
Routers. Read Chapter 7.
... [wildcard] [dest-port] [other-options]
where = 100-199 or 2000-2699
Example: Do not allow any TCP packets with port numbers
between 135-139 (with ‘any’ source or destination IP addresses):
access-list 101 deny tcp any any range 135 139 log
Example: Permit UDP packets to desti ...
...
ns2-ch15 16
... ARP module connected to it which resolves all IP to hardware (Mac) address conversions ...
... ARP module connected to it which resolves all IP to hardware (Mac) address conversions ...
History and technical background
... How did the Internet develop? ARPANET (military) [1969 – 1980’s]: The Internet’s Grandfather, ARPANET, was born in late 1969 From the beginning ARPANET was packet-based, which has important ramifications on its operation (no single point of failure) Initially used NCP (Network Control Protoco ...
... How did the Internet develop? ARPANET (military) [1969 – 1980’s]: The Internet’s Grandfather, ARPANET, was born in late 1969 From the beginning ARPANET was packet-based, which has important ramifications on its operation (no single point of failure) Initially used NCP (Network Control Protoco ...
Intrusion Detection Systems
... • This permits enterprises to use the non-routable private IP address space internally and reduce the number of external IP addresses used across the Internet. • When outside, i.e. Internet-based resources are needed, NAT is required to assign the internal hosts valid external IP addresses so that t ...
... • This permits enterprises to use the non-routable private IP address space internally and reduce the number of external IP addresses used across the Internet. • When outside, i.e. Internet-based resources are needed, NAT is required to assign the internal hosts valid external IP addresses so that t ...
beihangjuly04 - Digital Science Center
... Jitter in latency (transit time through broker) due to routing, processing (in NB) or packet loss recovery is important property Grids need and can use software supported message functions and trade-offs between hardware and software routing different from parallel computing ...
... Jitter in latency (transit time through broker) due to routing, processing (in NB) or packet loss recovery is important property Grids need and can use software supported message functions and trade-offs between hardware and software routing different from parallel computing ...
Energy Efficient Differentiable Coverage Service Protocol for
... (Grid-Based Coverage Protocol) With the help of a virtual grid imposed on the target area ...
... (Grid-Based Coverage Protocol) With the help of a virtual grid imposed on the target area ...
H5 Appliances
... the Layer 4 and strongly rely on IETF standards (TCP, UDP, RTP, etc.) accepted and used by all the industry. The metrics calculated by all H5 appliances allows administrators to set efficient and application aware performance troubleshooting strategies without the risk of depending on proprietary te ...
... the Layer 4 and strongly rely on IETF standards (TCP, UDP, RTP, etc.) accepted and used by all the industry. The metrics calculated by all H5 appliances allows administrators to set efficient and application aware performance troubleshooting strategies without the risk of depending on proprietary te ...
Networking in Linux
... Basic countermeasure: use encryption in all your traffic, such as PKI (1,2). You can also use VPN to create more ...
... Basic countermeasure: use encryption in all your traffic, such as PKI (1,2). You can also use VPN to create more ...
Chapter 1 - UniMAP Portal
... E-mail is an inexpensice and convenient alternative for most of the communication in which real time interaction is not essential. Instant-messaging is faster than e-mail and more closely approaches the real-time experience of the telephone c) Cell phone, local and long distance service cell phone i ...
... E-mail is an inexpensice and convenient alternative for most of the communication in which real time interaction is not essential. Instant-messaging is faster than e-mail and more closely approaches the real-time experience of the telephone c) Cell phone, local and long distance service cell phone i ...
Ad hoc communication
... A device that connects multiple networks together and forwards packets (of data) between them. Uses multiple network interfaces. Routing is preformed at the network layer (layer 3), i.e. a router does not care about higher layers. A router has a routing table, specifying which IP address (or group o ...
... A device that connects multiple networks together and forwards packets (of data) between them. Uses multiple network interfaces. Routing is preformed at the network layer (layer 3), i.e. a router does not care about higher layers. A router has a routing table, specifying which IP address (or group o ...
TCP for Ad-hoc Networks
... Network Feedback Network knows best (why packets are lost) + Network feedback beneficial - Need to modify transport & network layer to ...
... Network Feedback Network knows best (why packets are lost) + Network feedback beneficial - Need to modify transport & network layer to ...
Fundamentals of Multimedia, Chapter 15
... - translate the destination IP address of incoming packets to the appropriate network address. - identify for each destination IP the next best router IP through which the packet should travel based on routing table. ...
... - translate the destination IP address of incoming packets to the appropriate network address. - identify for each destination IP the next best router IP through which the packet should travel based on routing table. ...
Notes: Chptr 1 - UniMAP Portal
... E-mail is an inexpensice and convenient alternative for most of the communication in which real time interaction is not essential. Instant-messaging is faster than e-mail and more closely approaches the real-time experience of the telephone c) Cell phone, local and long distance service cell phone i ...
... E-mail is an inexpensice and convenient alternative for most of the communication in which real time interaction is not essential. Instant-messaging is faster than e-mail and more closely approaches the real-time experience of the telephone c) Cell phone, local and long distance service cell phone i ...
Overlay Networks and Tunneling Reading: 4.5, 9.4 Mike Freedman
... • Private communicaVons over a public network • A set of sites that are allowed to communicate with each other • Defined by a set of administraVve policies ...
... • Private communicaVons over a public network • A set of sites that are allowed to communicate with each other • Defined by a set of administraVve policies ...
gst_1 - abuad lms
... and Numbers (ICANN). The technical underpinning and standardization of the core protocols is an activity of the Internet Engineering Task Force (IETF), a non-profit organization of loosely affiliated international participants that anyone may associate with by contributing technical expertise. Histo ...
... and Numbers (ICANN). The technical underpinning and standardization of the core protocols is an activity of the Internet Engineering Task Force (IETF), a non-profit organization of loosely affiliated international participants that anyone may associate with by contributing technical expertise. Histo ...
CHAPTER 1: Computer Systems
... Translation of IP address to physical address at each intermediate node until destination is reached A broadcast of the IP address is sent to every node on the network. The matching node responds with a physical address Physical address (MAC address in the case of Ethernet) is sent in frame to ...
... Translation of IP address to physical address at each intermediate node until destination is reached A broadcast of the IP address is sent to every node on the network. The matching node responds with a physical address Physical address (MAC address in the case of Ethernet) is sent in frame to ...
No Slide Title
... There is a limit on the frame size of each data link layer protocol. This limit is called maximum transmission unit (MTU). MTUs for various data link layers: ...
... There is a limit on the frame size of each data link layer protocol. This limit is called maximum transmission unit (MTU). MTUs for various data link layers: ...
ppt - Computer Science
... • Each byte in the stream has its own 32-bit sequence number – on a 56 kbps phone line, it takes 1 week (plus) to cycle through – “At 100 megabits/sec, the cycle time is 5.4 minutes” RFC 793 – “Maximum Segment Lifetime, the time a TCP segment can exist in the internetwork system. Arbitrarily defined ...
... • Each byte in the stream has its own 32-bit sequence number – on a 56 kbps phone line, it takes 1 week (plus) to cycle through – “At 100 megabits/sec, the cycle time is 5.4 minutes” RFC 793 – “Maximum Segment Lifetime, the time a TCP segment can exist in the internetwork system. Arbitrarily defined ...
Some special IP addresses
... – routers should only process up to layer 3 – violates end-to-end argument • NAT possibility must be taken into account by app designers, e.g., P2P applications ...
... – routers should only process up to layer 3 – violates end-to-end argument • NAT possibility must be taken into account by app designers, e.g., P2P applications ...
Internet protocol suite
The Internet protocol suite is the computer networking model and set of communications protocols used on the Internet and similar computer networks. It is commonly known as TCP/IP, because among many protocols, the Transmission Control Protocol (TCP) and the Internet Protocol (IP) is the accepted and most widely used protocol in Internet. Often also called the Internet model, it was originally also known as the DoD model, because the development of the networking model was funded by DARPA, an agency of the United States Department of Defense.TCP/IP provides end-to-end connectivity specifying how data should be packetized, addressed, transmitted, routed and received at the destination. This functionality is organized into four abstraction layers which are used to sort all related protocols according to the scope of networking involved. From lowest to highest, the layers are the link layer, containing communication technologies for a single network segment (link); the internet layer, connecting hosts across independent networks, thus establishing internetworking; the transport layer handling host-to-host communication; and the application layer, which provides process-to-process application data exchange.The TCP/IP model and related protocol models are maintained by the Internet Engineering Task Force (IETF).