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A Frame Relay Topology In GNS3


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 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 »

GNS3 High CPU Usage And Hubs

A couple of weeks ago I have been experiencing high CPU usage in my GNS3 home lab. After some trial and error, I localized the issue and discovered that the cloud device connection is the cause. My old topology I ... Read More »

Installing CallManager Express in GNS3


This article describes how to transform a Cisco router in GNS3 into a Cisco CallManager Express or CUCME. Remember that a Cisco router can become a CallManager Express if we install the CUCME package into it. I’ll assume you have a CUCME ... Read More »

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