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The invention of VLANs was very much welcomed by all engineers and administrators, allowing them to extend, redesign and segment their existing network wi…
The VLAN Concept - Introduction to VLANs
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This article shows how to perform an ISSU (In-Service Software Upgrade) on a Nexus Data Center switch (7000 and 7700 models) and avoid service and network…
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This article covers the installation of Cisco's CallManager Express on Cisco routers. Here you'll find the necessary installation commands, files to downl…
Disabling Cisco Router Password Recovery Service
Most Cisco engineers are aware of the classic Password-Recovery service Cisco equipment have. If the device's credentials are lost, then performing the Pa…
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…