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Network Switches are the evolution of Hubs and Repeaters, and enable the creation of networks by connecting multiple devices together. They are critical c…
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When working with medium to large scale networks, IT departments are often faced dealing with network loops and broadcast storms that are caused by user e…
How to Upgrade - Update Cisco ATA186 / 188 Firmware a…
The Cisco ATA 186/188 device is well known amongst any Cisco VoIP engineer. It is used allow analog phone devices to connect to the VoIP network and funct…
Cisco Router 'User Exec' Mode
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Let's see what it looks like to be in User-Exec mode on a Cisco router. Below, we have telneted into our lab router and are in User Exec Mod…
DHCP Option 82 Message Format, Analysis. DHCP Snooping…
This article provides in-depth analysis of DHCP Option 82 (DHCP Relay Agent) which is one of the +180 DHCP Options available to the DHCP protocol and used…
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Cisco Wireless Controllers (WLC) support the configuration of Link Aggregation (IEEE 802.3ad - LAG) which bundles the controller ports into a single port…