Category: Packet Pushers

For organizations that have many remote offices a DMVPN solution is a great option. You can purchase a cheap DSL or cable modem based solution then establish a dynamically built encrypted tunnel back to the corporate office or Data Center(s). The hubs should be located in a DMZ behind a firewall at the Data Center […] Read More

As an introvert, I don’t like ice breakers or team building exercises at team meetings. Building the team camaraderie is done slowly over time with peers you work with. Daily Read More

As an introvert, I don’t like ice breakers or team building exercises at team meetings. Building the team camaraderie is done slowly over time with peers you work with. Daily interactions during work help build that as engineers learn to trust each other. What about for a team that does not interact with each other […] Read More

IP SLA is a great feature if you want to add some automation and intelligence into the network. SLA is no SDN/OpenFlow, but it can be very useful. It can also take down a network. Let’s say you are using DMVPN for a number of spoke locations in your network. You have a primary Internet […] Read More

IP SLA is a great feature if you want to add some automation and intelligence into the network. SLA is no SDN/OpenFlow, but it can be very useful. It can Read More

As a consultant, I have done several network assessments for clients. One of the biggest items that is almost always missing is documentation. In my assessment reports, I can’t just say, “You are missing documentation,” and leave it at that. I have to be more specific. I have to specifically call out what should have […] Read More

As a consultant, I have done several network assessments for clients. One of the biggest items that is almost always missing is documentation. In my assessment reports, I can’t just Read More

I wrote an earlier blog article about using the reload command. The reload command used to be the only tool to recover from configuration errors when working on a device Read More

I wrote an earlier blog article about using the reload command. The reload command used to be the only tool to recover from configuration errors when working on a device remotely. You would save your configuration and issue the ‘reload in’ command, giving yourself enough time to make your changes. If you finished in time […] Read More

Cisco’s documentation on VTP version 2 transparent mode states that it will pass VTP messages without inspecting the domain name. Let’s verify this for ourselves. We are going to use Read More