How DNS works


This video will help you to learn how DNS works


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About Me

Associate Director Products Engineering (Building product vision and roadmaps / Hyper-Automation | Multi-Cloud Networking | Analytics | SD-WAN/LAN | NFV | SASE | Private 5G | IoT to Cloud | Edge to Cloud) at NTT Associate Director with a demonstrated history of working in the telecommunications industry. Skilled in next-generation technologies (SD-WAN/ SDN/ SASE/ Edge to Cloud/ IoT to Multi-Cloud), Pre-sales, and Private 5G. Strong operations professional with SD-WAN /SASE / IoT experience. Product leadership roles with experience in incubating, launching, and scaling products developed inhouse Goals inline to Hyper-Automation and enhanced AI to feed the system with all the triage information. Creating multi-experience for internal and external users. Incubated Edge to Cloud, IoT to Multi-Cloud, IoT Analytics Incubated and launched, and scaled SmartOOB based on 4G/5G technology to provide access to the underlying infrastructure Global IT Operations Management (Network Operations &...
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Errors on Fast ethernet Interface - Cisco Routers

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Errors on Fast ethernet interface of Cisco routers. If you are facing problem with the increasing errors on cisco router fast ethernet interface, you can apply few quick fixes. 1) Check the router memory and holding memory of the process, using following command :     show processes memory Check this every few minutes as this should not increase. 2) Check CPU process for spikes in CPU using following command show processes CPU history sh processes cpu sorted | exclude 0.00 3) Check the uptime of the router using following command. Show version 4) Issue can be with the cable, it should be CAT 5 or CAT 5e. 5) Issue can be with the Duplex/Speed set to auto/auto.    It should be always hard coded e.g. duplex full / speed 100.
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IP Packet The Internet Protocol (IP) is a protocol used for communicating data across a packet-switched internetwork using the Internet Protocol Suite (TCP/IP). A packet is the unit of data that is routed between an origin and a destination on the Internet or any other packet-switched network. Packet Structure : An IP packet consists of a header section and a data section. Header Section : The header consists of 13 fields, of which only 12 are required. The 13th field is optional . Version : The first header field in an IP packet is the four-bit version field. For IPv4, this has a value of 4 (hence the name IPv4). Header Length (HL) : The second field (4 bits) is the Internet Header Length (IHL) telling the number of 32-bit words in the header. Since an IPv4 header may contain a variable number of options, this field specifies the size of the header . The minimum value for this field is 5 which is a length of 5×32 = 160 bits. Being a 4-bit value, the maximum length is 15 words or 480 b...
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