Tutorial
Vim Primer for Network Engineers
Vi is arguably the best text editing software in the world. There, I said it… deal with it! It should be noted that while many people continue to refer to Vi simply as such, Vim …
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SNMP can save your life
Ever get locked out of a router or switch that is many hours or even days away? Recently, I had the pleasure, again. For some reason, be it the consultant that was turning up our …
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Best Practices and Securing Cisco IOS
Everyone has different views on hardening IOS, and while I do not claim to be an expert, these are the practices that I commonly use when bringing up a new device. If you see …
Read MoreTime-based ACLs
Ever since Cisco released IOS 12.0.1T we’ve had the ability to broaden the reach of the extended ACL to allow the influence of time.
Read MoreCisco MPLS VRF Configuration and Demo
A while back I asked everyone to vote on what topic they wanted to see next, and by no surprise almost every voted for MPLS VRFs. When I started working on this, I decided to take …
Read MoreLayer 2 Ethernet transport over OpenVPN
One of the things I used to deploy frequently at my previous position was transport for other ISPs and businesses. Since MPLS support is in its infancy on the Imagestream platform, …
Read MoreUsing OSPF to create unlicensed full duplex connections.
Recently one of my clients asked me to help resolve an issue at an aggregation point on their network. They had several connections that converged onto a single unlicensed link on …
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