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Routing Basics

Routers in a network discover remote networks in two ways Statically configured routes Dynamic routing protocols By default routers knows only the directly connected networks represented by “C” Static Routing Static route are mainly used when routing from a particular network to a stub network. Stub networks are the networks that can be accessed through […]

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Routers Basics

ROUTERS: It is an internetworking component that connects networks at different geographical locations.It has Serial Port Auxillary Port Console Port AUI (Attachment Unit Interface) or Ethernet(which uses RJ45 port) Routers are of two types Fixed -fixed number of slots (series from 700 to 2500, exception 1750, 1751) Modular – Upgradable slots and ports (series from […]

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Networking Basics

What is a Network? A network is any collection of independent computers(devices) which are connected to one another to share files and peripherals such as printers, modems, tape drives. Every Network includes: At least two computer server or client work station Network Interface card(NIC) A connection medium(wired or wireless) Network Operating System software Protocols: Protocols […]

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Iperf

Iperf was developed by NLANR/DAST as a modern alternative for measuring maximum TCP and UDP bandwidth performance. Iperf allows the tuning of various parameters and UDP characteristics. Iperf reports bandwidth, delay jitter, datagram loss. Iperf is available also for Windows The quality of a link can be tested as follows: – Latency (response time or […]

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MySQLTuner-perl Script

MySQLTuner is a script written in Perl that allows you to review a MySQL installation quickly and make adjustments to increase performance and stability. The current configuration variables and status data is retrieved and presented in a brief format along with some basic performance suggestions. Compatibility: MySQL 3.23, 4.0, 4.1, 5.0, 5.1 (full support) MySQL […]

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MEGACLI Commands to check Hardware RAID config and Setup

To know the Hardware RAID controller and other information use the lspci command. lspci | grep -i raid O/P: 01:00.0 RAID bus controller: LSI Logic / Symbios Logic MegaRAID SAS 2108 [Liberator] (rev 05) The above command shows the RAID controller vendor details. Installation of Megacli in Centos: Download the MeGaCLIzip from the below link:http://www.lsi.com/downloads/Public/RAID […]

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