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Cisco boot process

Cisco 2960 troubleshooting of boot errors, flash deleted

As one of the most popular Cisco switches, Cisco 2960 (taking WS-C2960S-48TS-L for example) are widely applied worldwide. However, it’s hard to avoid all the problems with any good device. We are always asked such kind of questions or complaints, “I am looking for ways to avoid deleting files from the flash in a Switch

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Cisco WS-C3750X-48T-S switch

Cisco Catalyst WS-C3750X-48T-S switch Features and Troubleshooting

The Cisco Catalyst WS-C3750X-48T-S switch is an excellent choice for those businesses that are looking to expand its telephony and networking options including features such as Voice over IP (VoIP), virtualization, cloud-based computing, or similar modern networking. The Cisco WS-C3750X-48T-S Catalyst switch combines cutting-edge Cisco networking technology into an easy-to-use package which is both affordable

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Default boot sequence for Cisco IOS software

How Cisco routers boot Cisco IOS software?

When a router starts up it needs to know which software to load and which configuration file to use. The way it determines these two things is by looking at its configuration register setting and its startup configuration in nonvolatile RAM (NVRAM).When a router is booting up, it searches its configuration register to determine where

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how to reset Cisco routers to default setting

Tutorial on Resetting and Verifying Cisco Routers to Default Factory Setting

No matter for an end-user or a company, you may hope your new bought router to benefit you best; thus, it’s necessary to restore the router to factory settings. Now, there are the simple but practical tips for resetting Cisco routers: 1. To erase the configuration file, issue the erase nvram: command. Reload the router

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Site-to-site IPSec based VPN between a Cisco ASA5505 and Cisco router 2621

Site-to-site IPSec based VPN between a Cisco ASA5505 and Cisco router 2621

For the importance of site-to-site IPSec based VPN between a Cisco ASA5505 and Cisco router 2621, there is a turnkey solution for a site-to-site IPSec based VPN between a Cisco ASA5505 running version 7.3(4) on one end (Site A) and a Cisco router 2621 running IOS version 12.3 on the other end (Site B). This

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Concept of Business Ether Wide service

Why We Should Monitor WAN Link and How to Complete WAN Monitoring?

What is a WAN Link? A WAN link represents a logical connection between two routers—One router at the data-center and the other at a branch office (usual scenario). Enterprises buy WAN links from Telcos or ISPs based on the following characteristics: Distance between the two routers (ex: India to USA) Speed of the WAN Link

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Network Address Translation

What is Network Address Translation?

NAT (Network Address Translation or Network Address Translator) is the translation of an Internet Protocol address (IP address) used within one network to a different IP address known within another network. The new Network Address Translation (NAT) functionality in the Cisco routers allows privately addressed networks to connect to public networks such as the Internet. When

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What is OSI Model & the Overall Explanation of ISO 7 Layers

In the world of network communication, we always talk about the OSI and ISO, but what are the meanings of these two words? To explain easily, the ISO is an organization which makes the standard of the OSI model. ISO stands for International organization of Standardization. This is called a model for Open System Interconnection

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details of IPv6 basics

How to Optimize Licensing and Performance for IPv6 with Internet Protocol upgrade?

IPv6 has been a hot topic in the networking industry for over 2 years now and as the changeover progress, it is still a priority for companies. IPv6, as the next version of the Internet Protocol, could make life easier and battery life longer for electronics-addicted consumers, according to Pros, IPv6 can boost mobile performance

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Functions, problems and solutions of Wireless LANs

Functions/advantages of Wireless LANs Wireless LANs (WLANs) enable users to access network resources and applications securely, anytime and anywhere a wireless network is deployed. The accelerated adoption of WLAN technology in enterprises is radically transforming business operations, data centers, centralized IT control, and the network edge. Enterprise WLAN adoption is being driven by mobile users

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