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Discover Features & Capabilities - Cisco Catalyst…
There’s a new switch around the block and its name is Catalyst 3850 – Cisco’s latest addition to its successful Catalyst series switches. The Cisco Catalyst 3850 is no ordinary switch – it’s fully st…
How To Stop CallManager (CUCM) 7, 8, 9, 10.5 with…
Cisco Unified CallManager (CUCM) and its Voice Gateway relies on the telecommunication provider (telco) to send the correct call details for every incoming call, to allow the system to correctly proc…
Linux System Resource & Performance Monitoring
You may be a user at home, a user in a LAN (local area network), or a system administrator of a large network of computers. Alternatively, you may be maintaining a large number of servers with multip…
Introducing Colasoft Unified Performance Manageme…
Colasoft Unified Performance Management (UPM) is a business-oriented network performance management system, which analyzes network performance, quality, fault, and security issues based on business…
How To Configure Router On A Stick - 802.1q Trunk…
Router-on-a-stick is a term frequently used to describe a setup up that consists of a router and switch connected using one Ethernet link configured as an 802.1q trunk link. In this setup, the switch…
IP Subnetting - Part 2: Subnet Masks & Their Effe…
There are a few different ways to approach subnetting and it can get confusing because of the complexity of some subnets and the flexibility they offer. For this reason I created this little paragrap…
The OSI Model: Layer 1 - Physical Layer
The Physical layer has two responsibilities: it sends bits and receives bits. Bits come only in values of 1 or 0. The Physical layer communicates directly with the various types of actual communicati…
Propagation Delay
You may know that the minimum frame size in an Ethernet network is 64 bytes or 512 bits, including the 32 bit CRC. You may also know that the maximum length of an Ethernet cable segment is 500 meters…
Install & Fix Cisco VPN Client on Windows 10 (32…
This article shows to how correctly install Cisco VPN Client (32 & 64 bit) on Windows 10 (32 & 64 bit) using simple steps, overcome the ‘This app can’t run on this PC’ installation error, plu…
Password Recovery / Password Reset Procedure for…
This article shows how to reset a password on a Cisco Catalyst 3750-X (stacked or single unit) and Cisco Catalyst 3560-x switch without losing its startup configuration. The Cisco password recovery p…
How to Register Cisco IP Phones & Connect CallMan…
This article shows how to connect Cisco's Unified CallManager with a CallManager Express system (including UC520, UC540 and UC560) via H323 gateway, allowing the two systems to route calls between ea…
How To Configure DNS Server On A Cisco Router
The DNS protocol is used to resolve FQDN (Fully Qualified Domain Names) to IP addresses around the world. This allows us to successfully find and connect to Internet websites and services no matter w…
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