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Three classes of problems caused by not using STP in redundant LANS: Broadcast storm: The forwarding of a frame repeatedly on the same links, consuming significant parts of the links' capacities. MAC table instability: The continual updating of a switch's ...

Introduction An HGU (which is a device that integrates ONT and router) from Movistar has been changed to work in bridge mode in a SOHO environment, and now the main router/firewall is a pfSense router as in the following topology (this is the same topology us...

TechInfoDepot - Technical Documentationhttps://techinfodepot.shoutwiki.com/wiki/Askey_RTF3505VW-GV Internal photoshttps://photos.google.com/share/AF1QipOw-c3niS5ZUpl_86UBXABeGfcxXkmjVy0DeCRvu3CE4zSoh-moLcwph3twDgy0LQ?key=V0lDSWxUWGFSemVxajIzOFQ3NFpFMDlyalVGV2...

Introduction We have an old Windows 98 PC in our home network and we want to manage it via RDP. Since the newest implementations of RDP are not available in Windows 98, one to remote desktop into Windows 98 is using an old compatible version of TightVNC, whic...

Introduction In preparation for another lab (Configuring a modem on the AUX port of a Cisco router for EXEC dial-in connectivity), I needed a second Spanish "fixed" phone number. I actually have one from my ISP company, but needed another one for the mentione...

Introduction to link aggregation Multiple links could be connected instead of a single link between devices to increase bandwidth. However, STP which is enabled on L2 devices like Cisco switches by default, will block redundant links to prevent switching loop...

Cloud Computing versus Data Center The terms data center and cloud computing are often used incorrectly. These are the correct definitions of data center and cloud computing: Data center: Typically, a data storage and processing facility run by an in-house...

Introduction In this lab we will explore the different options and use cases for establishing an L2 EtherChannel between various switches. The gear available for this lab are the following three switches: Catalyst 2940 Catalyst 3560 Catalyst 2960CX Fi...

The goal is to investigate OSPF and its core features in preparation for the CCNA exam. The topology I used is based on three L3 switches, connected to my home network (192.168.2.0/24) where the MGMT PC is located. The cabling details are as follows: [ ] ...

Via recover-config command Connect a console cable to a workstation Power on the WLC Wait until User: prompt appears Enter recover-config and hit Enter - this will trigger the recovery mechanism which will in effect factory reset the WLC Via Boot Load...

Introduction The Cisco 2500 Series Wireless Controller supports a maximum of 50 lightweight APs in increments of 5 AP licenses with a minimum of a 5 AP license. WLC 2504 ports and LAG A port is a physical entity that is used for connections on the controlle...

Introduction On the previous pages of this chapter, the Cisco UC500 was introduced, factory reset, initialized and connected to Cisco CCA. At this point, the appliance is ready to be configured however we want. For this lab, I have purchased a used Cisco UC5...

Introduction Cisco’s UC500 is a purpose built appliance for SMB (Small and Medium Business) solutions that provides IP PBX, voicemail, switching, VPN, firewall & optional wireless functionality. The IP PBX & voicemail features are based on Cisco Unified Comm...

The Cisco UC500 appliance was introduced on the previous page Introduction to the Cisco UC500. In this page I will explain how to factory reset the appliance, how to apply an initial configuration, and how to connect it to Cisco Configuration Assistant. For ...

Cisco Configuration Assistant (CCA), part of the Cisco Smart Business Communications System (SBCS) portfolio of products, simplifies the tasks of configuring, deploying, and administering Cisco network solutions, improves the security and performance of your n...

First thing, we want to remember that the UC500 appliances do not have a dedicated onboard, non-removable flash. The persistent storage resides on one removable CompactFlash (CF) card (two, in the case of the UC560) in front-panel slots (see Introduction to th...

Introduction On previous chapters we initialized the UC500 using the Telephony Setup Wizard on the Cisco CCA. We also configured some basic system settings. Next step will be configuring a SIP trunk from Flash Telecom (a provider I used on previous labs). SI...

Introduction Below is a concise checklist of the basic system‐level settings we should configure on Cisco Unified CME (and on any Cisco IOS router hosting CME) to align with Cisco best practices. These recommendations cover time sync, name services, localizat...

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