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Differences between Circuit, Packet and MPLS switching

November 4, 2014 at 6:59 am
Ilja Zegars
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Differences between Circuit, Packet and MPLS switching

What are differences between Circuit, Packet and MPLS switching? Switching is a process of determining of the logical path, how data would travel between sender and receiver. Three main methods, that are commonly used in modern networks are: circuit switching, packet switching, and multiprotocol label switching.   Circuit Switching Main feature of the circuit switching, is the connection that is being established before any ...

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Application Layer Protocols

November 4, 2014 at 6:37 am
Ilja Zegars
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Application Layer Protocols

TCP/IP is using some of the Application layer protocols in addition to Transport and Internet layer protocols. Those protocols are used for transforming user requests to network friendly format through the TCP or UDP with IP.   Telnet It is protocol used for remote login through the TCP/IP. It is using port 23 for the connection and behavior on the remote machine is ...

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What is DDNS (Dynamic DNS)

November 4, 2014 at 6:00 am
Ilja Zegars
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What is DDNS (Dynamic DNS)

What is DDNS (Dynamic DNS) and what it is used for? DNS is used for host location and can be used effectively for that purpose, when the IP is of the host is relatively constant (static). However, nowadays, due to impossibility to assign static IP for every device in the network, most users are using dynamic IP subscription from their network ...

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Explanation of Sockets and Ports in Networking

May 20, 2014 at 10:49 am
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Explanation of Sockets and Ports in Networking

Computer generated processes require unique address to send and receive information. Port numbers are used for that purpose. Process socket is a combination of host IP and process port number. Easy example is the Telnet service that is using port 23 by default. Knowing host IP address (for example 12.34.45.56) the socket address can be created (12.34.45.56:23). Even though Telnet’s default ...

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Domain Names

May 16, 2014 at 8:35 am
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Domain Names

The group of computers that belong to the same company/organisation and share the part of the IP address is called domain. It can be identified by the domain name, that is usually representing type of the company/organisation. In networking term Fully Qualified Domain Name (FQDN) is referring to a local host name together with its domain name. Domain name consists of characters ...

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Terminating a DHCP lease

March 13, 2014 at 8:48 am
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Terminating a DHCP lease

DHCP lease can be either terminated by user or network administrator, or it may expire. Lease termination may be forced when the DHCP server is changed. On Windows termination is done from Command Prompt by using “ipconfig /release” command. This command will erase all the IP, gateway, and subnet mask data from TCP/IP configuration file. In order to request new IP data, ...

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Private IP vs Link-Local Address

March 13, 2014 at 8:33 am
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Private IP vs Link-Local Address

Private addresses are used for internal network of the company, organisation, or the household. Since they are used for internal network, private addresses can not be used for accessing the Internet. Public addresses, however, can and should be used by organisations for external connection to the Internet. The ranges of available internal IPs are shown in Table 1. Table 1. IPs ...

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What is Zeroconf (Zero Configuration)?

March 13, 2014 at 8:26 am
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What is Zeroconf (Zero Configuration)?

Zeroconf (Zero Configuration) is the collection protocol used for link-local IP assignment and service discovery. Zeroconf is only used if DHCP is not available, since it is located on clients machine. When DHCP is available again, the Zeroconf releases its assigned IP and uses the one provided by DHCP server. IPv4LL (IPv4 Link Local) protocol is used for address assignment when ...

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Difference between IPv4 and IPv6

March 7, 2014 at 6:35 am
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Difference between IPv4 and IPv6

This article is intended to show difference between IPv4 and IPv6. It introduces the list of new features that IPv6 is offering. When you see IPv6 address it is easy to notice how differently it is written. While IPv4 is written in a form of four decimal numbers separated by a period, the IPv6 is having eight hexadecimal numbers separated by ...

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What is ICMP (Internet Control Message Protocol)

March 5, 2014 at 8:45 am
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What is ICMP (Internet Control Message Protocol)

This protocol is necessary for ensuring that data has been successfully received by the recipient node. ICMP reports to the sender on successful or unsuccessful data delivery. It indicates reason for data delivery failure like: TTL (Time To Live) expiry Data destination reach failure Network congestion ICMP provides failure information, that might be very useful for problem troubleshooting, but it does not solve any ...

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