Category Archives: Routing

Even More TestLab Scripts

I doubt many home labs match hardware exactly with whatever the vendor has recommended. As a result most of us must script around or manually edit vendor configuration files. Here are some of my earlier scripts that I have shared … Continue reading

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ASA VPN NAT

2010-09-17 09:06:20 ASA VPN NAT I spent the last week fighting our ASA. We have an old VPN 3000 Concentrator and I am slowly moving all of the tunnels to our ASA. But I needed to to do some NAT … Continue reading

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The Doc CD

Cisco documentation is expansive, it is both broad and has great depth, as a result finding what you need is not easy. When you watch a CCIE navigate the “Doc CD” or documentation website you realize how deeply they understand … Continue reading

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TestLab Scripts

I wrote a couple of scripts for the testlab this week and figured I would share them. You can download them here. These could be modified for a GNS3 lab setup easily as well. Not wanting to reinvent the wheel … Continue reading

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Some More TestLab Scripts

I wrote a couple more scripts this week. These two little gems update my entire lab by running one command from the testlab tftp server. I pass the main script a lab name and it proceeds to update every router … Continue reading

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Troubleshoot Security

There are three planes of a router that need to be secured, the management plane, control plane and data plane. Management Plane Used to access and configure a switch or router. It is secured through SNMPv3, TACACS+, VTY ACLs and … Continue reading

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IPv6 Troubleshooting

IPV6 Addressing • 128 bit addresses. • Simplified header with fewer fields; IPv4 has 12 fields, IPv6 has 5 fields; • No checksum in the header. This results in more efficient process because in IPv4 the TTL is decremented at … Continue reading

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Troubleshoot Voice, Video and Multicast

I have had a hard time figuring out how they are going to test us for voice troubleshooting when the only real command they cover is auto qos and and the MQC. As a result I’m going to concentrate on … Continue reading

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TSHOOT Sidenote

I added some more flashcards in the files directory. These all have a file name of tshoot-topic.csv and are for the Flashcards Deluxe iPhone app. If you notice any errors in the cards please shoot an email or make a … Continue reading

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Troubleshoot DHCP

I am not going to get into a long discussion of DHCP. I run the DNS/DHCP servers at work and have a pretty good idea of how it all works. Even though the basics are the same, BIND is a … Continue reading

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