Week_Ten_Network_ppt
... 3. PPP carries packets from many different protocol suites using NCP. The NCP sends packets to negotiate the needed settings. Is all data encrypted? No Encryption is used to simply verify the passwords. ...
... 3. PPP carries packets from many different protocol suites using NCP. The NCP sends packets to negotiate the needed settings. Is all data encrypted? No Encryption is used to simply verify the passwords. ...
PPT - Suraj @ LUMS
... address (using ARP), and sends the resulting frame directly to the destination The two machines are known to be on the same network because they have the same network identifier Router ...
... address (using ARP), and sends the resulting frame directly to the destination The two machines are known to be on the same network because they have the same network identifier Router ...
Introduction - Communications
... • The complexity of the communication task is reduced by using multiple protocol layers: • Each protocol is implemented independently • Each protocol is responsible for a specific subtask • Protocols are grouped in a hierarchy • A structured set of protocols is called a communications architecture o ...
... • The complexity of the communication task is reduced by using multiple protocol layers: • Each protocol is implemented independently • Each protocol is responsible for a specific subtask • Protocols are grouped in a hierarchy • A structured set of protocols is called a communications architecture o ...
Transport Control Protocol (TCP) & Applications
... Domain Name System specifies the name syntax and the rules for delegation authority over names. It provides: • hierarchical domain based naming scheme • distributed database implemented in a hierarchy of many name servers primarily for mapping host names to IP addresses • the Internet is divided int ...
... Domain Name System specifies the name syntax and the rules for delegation authority over names. It provides: • hierarchical domain based naming scheme • distributed database implemented in a hierarchy of many name servers primarily for mapping host names to IP addresses • the Internet is divided int ...
LectureClientServerM..
... 2. Create input and output streams. 3. Send request(s) and receive reply(s) according to the server application protocol. 4. Close streams and socket. ...
... 2. Create input and output streams. 3. Send request(s) and receive reply(s) according to the server application protocol. 4. Close streams and socket. ...
ch02
... Figure 2.20 shows a part of an internet with two routers connecting three LANs. Each device (computer or router) has a pair of addresses (logical and physical) for each connection. In this case, each computer is connected to only one link and therefore has only one pair of addresses. Each router, ho ...
... Figure 2.20 shows a part of an internet with two routers connecting three LANs. Each device (computer or router) has a pair of addresses (logical and physical) for each connection. In this case, each computer is connected to only one link and therefore has only one pair of addresses. Each router, ho ...
Chapter 1: A First Look at Windows 2000 Professional
... • Router forwards packet to core layer router based on first octet IP address • Core layer router forwards packet to distribution layer router based on first two ...
... • Router forwards packet to core layer router based on first octet IP address • Core layer router forwards packet to distribution layer router based on first two ...
L20 - MIT
... IP uses distributed routing algorithms: RIP, OSPF In a LAN, the “host” computer sends the packet to the default router which provides a gateway to the outside world ...
... IP uses distributed routing algorithms: RIP, OSPF In a LAN, the “host” computer sends the packet to the default router which provides a gateway to the outside world ...
IP: Routing and Subnetting
... address (using ARP), and sends the resulting frame directly to the destination The two machines are known to be on the same network because they have the same network identifier Router ...
... address (using ARP), and sends the resulting frame directly to the destination The two machines are known to be on the same network because they have the same network identifier Router ...
Introduction to Computer Networking
... of a road), it is possible with directional antennae, to avoid digging trenches under roads to connect the sites In historic buildings where traditional cabling would compromise the façade, a wireless LAN can avoid drilling holes in walls Long-term cost benefits can be found in dynamic environme ...
... of a road), it is possible with directional antennae, to avoid digging trenches under roads to connect the sites In historic buildings where traditional cabling would compromise the façade, a wireless LAN can avoid drilling holes in walls Long-term cost benefits can be found in dynamic environme ...
ECE544 - WINLAB
... Exchange updates with directly connected neighbors – periodically (on the order of several seconds) even nothing changes • Let others know it is running • Refresh the route – whenever routing table changes (called triggered update) • Detect link or node failure – “Hello” message exchange between nei ...
... Exchange updates with directly connected neighbors – periodically (on the order of several seconds) even nothing changes • Let others know it is running • Refresh the route – whenever routing table changes (called triggered update) • Detect link or node failure – “Hello” message exchange between nei ...
A Small PC Network
... – Reliable like other UNIX versions – Open Source: Many people are developing tools to add to the LINUX core – Requires Extensive Labor to Set Up, Maintain – Device driver software often is lacking for printers, disk drives, and other devices ...
... – Reliable like other UNIX versions – Open Source: Many people are developing tools to add to the LINUX core – Requires Extensive Labor to Set Up, Maintain – Device driver software often is lacking for printers, disk drives, and other devices ...
IP: Datagram and Addressing
... When all machines receive the ARP request broadcast, they can store the address mapping in their cache. Do they? ARP is used when an IP to physical address mapping changes to notify hosts on the network of the change ARP messages are encapsulated in MAC frames. A special value in the type field of t ...
... When all machines receive the ARP request broadcast, they can store the address mapping in their cache. Do they? ARP is used when an IP to physical address mapping changes to notify hosts on the network of the change ARP messages are encapsulated in MAC frames. A special value in the type field of t ...
CCNA Cheat Sheet Internetworking Essentials
... © Copyright 2010 Internetwork Training – Although the authors of have made every effort to ensure the information in this document is correct, the authors do not assume and hereby disclaim any liability to any party for loss or damage caused by errors, omissions or misleading information. ...
... © Copyright 2010 Internetwork Training – Although the authors of have made every effort to ensure the information in this document is correct, the authors do not assume and hereby disclaim any liability to any party for loss or damage caused by errors, omissions or misleading information. ...
Alcatel-Lucent ISA-ES1 and ES4 Series
... • Packet Manager (PKT): data services • Standard management support includes ¬ Open Systems Interconnection (OSI) stack with Q3 interface per SDH part of management ¬ Simple Network Management Protocol (SNMP)v2c, SNMPv3 for Ethernet part of management ¬ IP over OSI tunnelling: out-of-band management ...
... • Packet Manager (PKT): data services • Standard management support includes ¬ Open Systems Interconnection (OSI) stack with Q3 interface per SDH part of management ¬ Simple Network Management Protocol (SNMP)v2c, SNMPv3 for Ethernet part of management ¬ IP over OSI tunnelling: out-of-band management ...
IP address
... large IP datagram are divided (“fragmented”) within net one datagram becomes several datagrams “reassembled” only at final destination IP header bits used to Adapted from: Computer Networking, Kurose/Ross identify, order related ...
... large IP datagram are divided (“fragmented”) within net one datagram becomes several datagrams “reassembled” only at final destination IP header bits used to Adapted from: Computer Networking, Kurose/Ross identify, order related ...
Lecture 7
... • The IP layer allows packets to be sent over gateways to machines not on the physical network • Addresses used are IP addresses, 32-bit numbers divided into a network address (used for routing) and a host address • The IP protocol is connectionless, implying: – gateways route discrete packets indep ...
... • The IP layer allows packets to be sent over gateways to machines not on the physical network • Addresses used are IP addresses, 32-bit numbers divided into a network address (used for routing) and a host address • The IP protocol is connectionless, implying: – gateways route discrete packets indep ...
Q and A slides
... Who does a machine ARP for? Q: Does a machine ARP for a machine that is not on its local LAN? A: No! It is trying to find the MAC address – which means layer 2. So, it is trying to get the packet to its next-hop (which might be the ultimate destination). If the destination address is not on the loc ...
... Who does a machine ARP for? Q: Does a machine ARP for a machine that is not on its local LAN? A: No! It is trying to find the MAC address – which means layer 2. So, it is trying to get the packet to its next-hop (which might be the ultimate destination). If the destination address is not on the loc ...
networking_1
... It just makes sure that the frames issued by any computers connected to it. It does no further processing with the frames. That's why repeaters are sometimes called dumb repeaters. This closes our discussions about LANs. ...
... It just makes sure that the frames issued by any computers connected to it. It does no further processing with the frames. That's why repeaters are sometimes called dumb repeaters. This closes our discussions about LANs. ...
Introduction to Computer Networking - PDST
... A hub is a device used to connect a PC to the network. The function of a hub is to direct information around the network, facilitating communication between all connected devices. However in new installations switches should be used instead of hubs as they are more effective and provide better perfo ...
... A hub is a device used to connect a PC to the network. The function of a hub is to direct information around the network, facilitating communication between all connected devices. However in new installations switches should be used instead of hubs as they are more effective and provide better perfo ...
Protocol - PUC-Rio
... We assume a structured mobile network composed of Mobile Hosts (MHs), Mobility Support Stations (MSSs) We adopt the Indirect Model [Badrinath94], where all communications are split into a wired and a wireless part Basic unit of interaction in a protocol message If mobile host is reachable, ...
... We assume a structured mobile network composed of Mobile Hosts (MHs), Mobility Support Stations (MSSs) We adopt the Indirect Model [Badrinath94], where all communications are split into a wired and a wireless part Basic unit of interaction in a protocol message If mobile host is reachable, ...
The Internet Network layer: IP Addressing
... IP Addressing given notion of network, let's re-examine IP addresses: Note: Reserving 216= 65K for host addresses would be wasteful for a 2K hosts ...
... IP Addressing given notion of network, let's re-examine IP addresses: Note: Reserving 216= 65K for host addresses would be wasteful for a 2K hosts ...
Chapter 1. Introduction to Data Communications
... a DNS request to its local DNS server. Because of only a small amount of information is sent, DNS uses connectionless routing and is sent using UDP. • That computer either responds by sending a UDP packet back to the client or, if it still doesn’t know the IP address, it sends another UDP packet to ...
... a DNS request to its local DNS server. Because of only a small amount of information is sent, DNS uses connectionless routing and is sent using UDP. • That computer either responds by sending a UDP packet back to the client or, if it still doesn’t know the IP address, it sends another UDP packet to ...