Monthly Archives: January 2012

My current lab

Posted on 18. January 2012 by crissa

Hello, my current Cisco lab. On the left two 1712 routers and on the right from the top: A 2520 router, a 2511 terminal server, two 2950 switches and a 3548 switch. The 2520 is the latest addition to the … Continue reading →

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Using the AUX port to connect two routers

Posted on 15. January 2012 by crissa

Hello, the AUX port on a Cisco router is seldom used, but it can be useful as an extra connection between two routers in a lab environment. For this example I used two Cisco 2516 router. The first step is … Continue reading →

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%cdp-4-duplex_mismatch

Posted on 13. January 2012 by crissa

Hello, when you use older Cisco routers together with more update routers in the same ethernet network and you are using CDP (Cisco Discovery Protocol) you maybe familiar with the following message. 000042: Jan 13 21:22:23.001: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered … Continue reading →

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