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vlan(virtual local area network)

VLANs (Virtual Local Area Networks) VLANs(Virtual Local Area Networks) are the virtual networks that you can seperate big networks into smaller networks. This can be done for reducing broadcast traffic, network performance improvement, security purpose or to seperate different departments each other and for network flexibility. Basically VLAN (Virtual Local Area Network) VLANs are logical […]

Ping Topology

Ping Command Whenever other engineers see network engineers during troubleshooting, they think that, network engineers only ping from one node to another. But as you know a network engineer is more than a pingman :) This command is a basic but very useful tool for network engineers to control the reachability of peer node. Ping […]

TCP Options The last part of this article series is related to TCP options. After this there is aleady the data part. In this section there are some options that enhance TCP protocol. This options are MSS, Window Scaling, Selective Acknowledgements, Timestamps and Nop. The size of this field is changable according tot the used […]

TCP Window Size, Checksum & Urgent Pointer The window, checksum and urgent pointer are another important fields in TCP header. Each of these fields are 2 bytes long. Window Size Window size the most important part in the TCP header. This fields is used by the receiver to indicate to the sender, the amouth of […]

IPv6 – Part 4 (Subnetting in IPv6) I think you are familiar with subnetting from IPv4. It was not so diffeccult. But in IPv6 the addresses are very hight, so IPv6 subnettinis a bit diffucult than IPv4 subnetting. I will try to show you IPv6 subnetting with three example.Let’s check these examples and try to […]

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