Author: Rene Molenaar
GNS3 TSHOOT Labs
Earlier this week I published the topology for CCNP TSHOOT built in GNS3 but for some reason the attachments didn’t work so I had to move the article, you can find it right here. It’s a good idea…
Read More »CCNP TSHOOT GNS3 Topology
This is something I had in mind for quite some time but today I finally created the CCNP TSHOOT topology for GNS3. The topology that is used for the exam has been released by Cisco so it’s not…
Read More »BGP Conditional Advertisement
Scenario: An international toy store company needs your help. They use BGP to exchange routing information between their sites but everytime one of their IBGP routers fails they have connectivity issues. Let’s see if you can help them…
Read More »OSPF Summarization Troubleshooting
Scenario: Mystical Corporation is using OSPF within their autonomous system. Their network is configured using different areas which seems to be working fine. One of the network engineers configured a summary for area 0 but it seems it’s…
Read More »BGP Traffic Engineering Unsuppress-Map
Scenario: The mystical creature corporation has a large international network of fantasy enthusiastics people sharing new mystical rumors. They are running BGP to exchange routing information between each other. At some point in the network you are aggregating…
Read More »Multilink PPP over Frame Relay
Scenario: You are the senior network engineer working at a major frame relay ISP somewhere in Europe. One of your customers requests the company to run authentication over their frame relay connections and they would also like to…
Read More »Multicast RPF Failure NBMA Troubleshooting
Scenario: You are responsible for the frame relay and multicast configuration within the network. You use a lot of hub and spoke topologies and up to now you haven’t seen any problems. Yesterday one of your customers called…
Read More »IP Event Dampening
Scenario: Garden Tools inc. has some trouble with their network. Every now and then the serial link fails which results in flapping networks for their routing protocol EIGRP. You want to configure damping so this is no issue…
Read More »DNS Server
Scenario: You are responsible for the network of a major internation hotel organization. You make sure that all the guests can use the Internet services. One of the things you need to do is ensure DNS lookups can…
Read More »Server Load Balancing (SLB)
Scenario: You are the senior network engineer for a large online webshop called “Booky Wooky”. One of your load balancers recently failed and you don’t have any replacement…business hasn’t been so good since the ereaders have been launched…
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