Author: Rene Molenaar
Connect real switches to GNS3 using a Cheap USB NICs
There are three options to connect your real switches to GNS3: The Quad NIC solution. The breakout switch solution. The cheap USB NIC solution. I don’t really like the breakout switch solution because I’ve had way too many…
Read More »BGP Filtering Extended Access-List
Scenario: Ever since Diablo was defeated Deckard Cain decided to become a network engineer. Two decades have passed and the village of Tristram has upgraded their network for inter-AS connectivity. Recently some security issues have been reported and…
Read More »BGP AS Path Access List
Scenario: Sugar Cane company is a international company that is growing at a rapid rate. To connect all the different sites BGP is used, the security officer however doesn’t want all the sites to have full connectivity and…
Read More »EIGRP Debug AS number
Scenario: One of your colleagues is on vacation and forgot to document the EIGRP topology before he left. You need to add another EIGRP router but you have no idea what the autonomous system (AS) number is of…
Read More »PAgP LACP Etherchannel
Scenario: For this lab you need REAL hardware. You can’t use switches in GNS3! You need at least Catalyst 2950 switches for this lab. You are a master of spanning tree and specialized in migration scenarios. Corkscrew inc….
Read More »MST (Multiple Spanning Tree)
Scenario: For this lab you need REAL hardware. You can’t use switches in GNS3! You need at least Catalyst 2950 switches for this lab. You are a master of spanning tree and specialized in migration scenarios. Corkscrew inc….
Read More »DHCP Snooping
Scenario: For this lab you need REAL hardware. You can’t use switches in GNS3! You need at least a Cisco Catalyst 3550 switch for this lab. One of your customers is being plagued by attacks on their switched…
Read More »VACL (VLAN Access List)
Scenario: For this lab you need REAL hardware. You can’t use switches in GNS3! You need at least a Cisco Catalyst 3550 switch for this lab. The network agency corporation has security issues with their network. They are…
Read More »VRRP (Virtual Router Redundancy Protocol)
Scenario: Internet traffic is becoming more and more important since the company you are working for is focused on e-commerce. Every minute that their webservers running webshops are unavailable is causing profit loss. The company decided need a…
Read More »Switch SVI Interface and Routing
Scenario: For this lab you need REAL hardware. You can’t use switches in GNS3! You need at least a Cisco Catalyst 3550 switch for this lab. The network agency corporation has hired you as a spanning tree specialist….
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