TCP/IP is a set of communication protocols developed in the 1970s to connect dissimilar networks. It includes the two main protocols TCP and IP. TCP functions at the transport layer to provide reliable data transmission through connections. IP functions at the network layer to route packets by addressing each device with a unique IP address. TCP/IP is commonly used today and supports communication over the internet through protocols like HTTP, FTP, and SMTP.
Subnetting of IPv4 ip address that help you to solve every type of ip address with any one of the class you want to subnet,and have a basic introduction of IPv6 ,and why, Ipv5 is not used.
Subnetting of IPv4 ip address that help you to solve every type of ip address with any one of the class you want to subnet,and have a basic introduction of IPv6 ,and why, Ipv5 is not used.
This presentation gives a brief description about IP Address (Internet protocol address), Classes of IPv4. And also included, what is IPv4 and what is IPv6.
IPv6 is short for "Internet Protocol Version 6". IPv6 is the "next generation" protocol designed by the IETF to replace the current version Internet Protocol, IP Version 4 ("IPv4").
This presentation gives a brief description about IP Address (Internet protocol address), Classes of IPv4. And also included, what is IPv4 and what is IPv6.
IPv6 is short for "Internet Protocol Version 6". IPv6 is the "next generation" protocol designed by the IETF to replace the current version Internet Protocol, IP Version 4 ("IPv4").
If the number of spine switches were to be merely doubled, the effect of a single switch failure is halved. With 8 spine switches, the effect of a single switch failure only causes a 12% reduction in available bandwidth. So, in modern data centers, people build networks with anywhere from 4 to 32 spine switches. With a leaf-spine network, every server on the network is exactly the same distance away from all other servers – three port hops, to be precise. The benefit of this architecture is that you can just add more spines and leaves as you expand the cluster and you don't have to do any recabling. Intuition Systems will also get more predictable latency between the nodes.
As a trend, disaggregation seems to be most useful for very large companies like Facebook and Google, or cloud providers. The technology does not necessarily have significant implications for small or medium sized businesses. Historically, however, technology has a way of trickling down from the pioneering phases of existing only within large companies with tremendous resources, to becoming more standardized across the board.
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1)Please explain the commands ifconfig, ping, traceroute, netstat, d.pdfeyebolloptics
1)Please explain the commands ifconfig, ping, traceroute, netstat, dig, nslookup, route, host,
hostname.
2). Explain briefly about TCP/IP and its Protocol Architecture.
3) Explain the difference between TCP/IP Protocol stack and OSI model.
Solution
Answer:
1) Ipconfig
Ipconfig is an MS-DOS utility that can be used from MS-DOS and an MS-DOS shell to display
the network settings currently assigned and given by a network. This command can be utilized to
verify a network connection as well as to verify your network settings.
Ping
Ping is one of the most commonly used network commands that allows you to ping another
network IP address. Pinging another address helps determine if the network card can
communicate within the local network or outside network.
Netstat
The netstat command is used to display the TCP/IP network protocol statistics and information.
Nslookup
The nslookup MS-DOS utility that enables a user to do a reverse lookup on an IP address of a
domain or host on a network.
Route
The route MS-DOS utility enables computers to view and modify the computer\'s route table.
traceroute
The tracert command in MS-DOS and Windows (known as traceroute in Unix-like operating
systems) is a useful tool for diagnosing network issues. It allows you to view a listing of how a
network packet travels through the network and where it may fail or slow down. Using this
information you can determine the computer, router, switch or other network device possibly
causing your network issues.
host
solves a host name into an Internet Protocol (IP) address or an IP address into a host name.
the hostname command is used to show or set a computer\'s host name and domain name. It is
one of the most basic of the network administrative utilities.
A host name is a name that is assigned to a host (i.e., a computer connected to the network) that
uniquely identifies it on a network and thus allows it to be addressed without using its full IP
address. Domain names are user-friendly substitutes for numeric IP addresses.
The basic syntax for the hostname command is
hostname [options] [new_host_name]
2)TCP/IP protocols map to a four-layer conceptual model known as the DARPA model , named
after the U.S. government agency that initially developed TCP/IP. The four layers of the DARPA
model are: Application, Transport, Internet, and Network Interface. Each layer in the DARPA
model corresponds to one or more layers of the seven-layer Open Systems Interconnection (OSI)
model.
Network Interface Layer
The Network Interface layer (also called the Network Access layer) is responsible for placing
TCP/IP packets on the network medium and receiving TCP/IP packets off the network medium.
TCP/IP was designed to be independent of the network access method, frame format, and
medium. In this way, TCP/IP can be used to connect differing network types. These include
LAN technologies such as Ethernet and Token Ring and WAN technologies such as X.25 and
Frame Relay. Independence from any specific ne.
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5. Benefits of TCP/IP: TCP/IP is commonly used as the Transport and Network layer protocol for these reasons: 1. It support almost all network operating systems. It is the required protocol for communicating over the Internet. if you want to connect to the Internet your computer has to use TCP/IP. 2. The protocol is designed to be fault tolerant and is able to dynamically reroute packets if network links become unavailable (assuming alternate paths exist). TCP / IP
6. Benefits of TCP/IP: 3. Protocol companions such as Dynamic Host Configuration Protocol (DHCP) simplify IP address management. 4. Domain Name System (DNS) is used with TCP/IP to resolve a fully qualified domain name (FQDN), such as sybex.com with its corresponding IP address. 5. TCP/IP is scalable to small and large networks. TCP / IP
7. Disadvantages of TCP/IP Although TCP/IP and the Internet have been wildly successful, using this protocol has disadvantages. 1. Managing IP addresses is complicated and cumbersome. IP address errors are usually due to administrative error. 2. Troubleshooting TCP/IP problems on your network requires an understanding of how TCP/IP works and of the more than a dozen protocols that are included in the suite. TCP / IP
8. Disadvantages of TCP/IP 3. Taking advantage of some of the best features of the TCP/IP suite requires considerable skill and knowledge. Depending on your type of business, mastering TCP/IP will require a significant amount of education for you or necessitate the hiring of an expert. TCP / IP
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15. TCP / IP 192.168.255.255 192.168.0.0 The 16-bit Block 172.31.255.255 172.16.0.0 The 20-bit Block 10.255.255.255 10.0.0.0 The 24-bit Block End of range Start of range IANA Reserved Private Network Ranges
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17. TCP / IP IP ADDRESS Each network device needs a unique IP address. The system administrator, or someone who coordinates IP address assignment and configuration, should assign this address from the pool of addresses assigned by Inter-NIC or your ISP.
18. TCP / IP SUBNET MASK A subnet mask defines which part of the IP address is the network address and which is the host address. By defining subnet masks, you specify which network your node belongs to. With this information and the destination address for your data, TCP/IP can determine whether source and destination nodes are on the same network segment. If they are on different segments, routing will be needed.
19. TCP / IP DEFAULT ROUTER OR GATEWAY You need a default router, or gateway, configured on your workstations if you want your packets routed over an internet-work. The default router is the IP address of the local router that you use to connect your network to the internet. The workstation needs to have this information if it wants to send packets out to the Internet. Without it, the workstation is clueless about where to send packets destined for external networks.
20. TCP/IP REFERENCE MODEL TCP/IP reference model originates from the grandparent of all computer networks, the ARPANET and now is used in its successor, the worldwide Internet. The name TCP/IP of the reference model is derived from two primary protocols of the corresponding network architecture.
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25. HOST-TO-NETWORK LAYER Bellow the internet layer there is a great void. The TCP/IP reference model does not really say much about what happens here, except to point out that the host has to connect to the network using some protocol so it can send IP packet over it. This protocol is not defined and varies from host to host and network to network. TCP/IP REFERENCE MODEL