Tutorial
Vim Primer for Network Engineers
- Tony Mattke
- Automation & tools
- 8 min read
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 …
SNMP can save your life
- Tony Mattke
- Automation & tools
- 3 min read
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 …
Best Practices and Securing Cisco IOS
- Tony Mattke
- Security
- 8 min read
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 …
Time-based ACLs
- Tony Mattke
- Security
- 2 min read
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. Time-based ACLs reference a time range that is …
Cisco MPLS VRF Configuration and Demo
- Tony Mattke
- Routing
- 11 min read
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 …
Cisco VOIP Basics – Cisco Dial Plans
- Tony Mattke
- Fundamentals
- 6 min read
This is the third part of my Cisco voip basics series. ( Parts 1, 2 & 4 ) Our goal is to help you configure a Cisco voice gateway that you could use in your home office. This …
Cisco VOIP Basics – Installing Cisco Call Manager Express
- Tony Mattke
- Fundamentals
- 5 min read
This is the second part of my Cisco voip basics series. ( Parts 1, 3 & 4 ) Our goal in this series is to setup a working voice gateway that you could use in your home office. …
Configuring a Cisco Router as a Frame Relay Switch
- Tony Mattke
- Fundamentals
- 2 min read
One of the most effective lab setups uses frame relay as its primary transport method. This is a configuration that many people use and praise for its ease of setup and …
Layer 2 Ethernet transport over OpenVPN
- Tony Mattke
- Routing
- 1 min read
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, …
Using OSPF to create unlicensed full duplex connections.
- Tony Mattke
- Routing
- 4 min read
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 …