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A Frame Relay Topology In GNS3

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You can reproduce this topology -and its configuration- for your CCNP Routing&Switching or CCNP Collaboration studies on GNS3. A lot of CCNP’s like me remember this famous topology from the old BSCI exam. In the new CCNP Routing&Switching syllabus, frame relay ... Read More »

Cisco ISE Upgrade 2.0 to 2.1

In this article I am going to lay the important facts for doing a Cisco ISE upgrade, from version 2.0 to 2.1. These recommendations are also valid for other upgrade versions. My tools are: Vmware Workstation Pro 12 Cisco ISE ... Read More »

Cisco IOU Unsupported Features

Here is a list of Cisco IOU unsupported features that you probably won’t find, when labbing using Eve-NG or GNS3. The missing features were found with i86bi-linux-l2-adventerprise-15.1b.bin image. But the same observations could be true for other versions too. Cisco IOU ... Read More »

Full Duplex Issue on IOL

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Trying to configure duplex settings under an IOL switch interface can be a pain in the ass, especially when you are practicing RSTP and you need to have point-to-point links. You do “show spanning-tree” and you see that your interfaces ... Read More »

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