Category «Route Switch»

Installing a License on Cisco CSR1000v

Introduction Recently a client had an expiring license on a CSR1000v router which required renewal. It was a happy coincidence that earlier I had installed a CSR1000V on my VMware Workstation to diagnose an unrelated fault. It was therefore handy to make use of the CSR to verify my change plan for the license renewal. …

MPLS Edge network configuration

Introduction It has been a busy start to 2017 at work and I had some distractions as well on the family front. But finally – here is part 2 of the mpls configuration article. To recap, in the previous article we completed the basic mpls core configuration of enabling an igp in the core, enabling …

MPLS Core network configuration

Introduction Christmas break – ah.. with time on my hands and between catching up with family, thinking about new year resolutions and feasting; it is time to add the Multiprotocol label switching (mpls) article I have been planning to write for this month. Cisco MPLS configuration is best understood by separating the configuration tasks into …

Basic AAA tacacs+ with tac_plus daemon

Summary tac_plus is a linux daemon you can run up as a basic TACACS+ AAA server. I have used this application to secure and centralised access to routers and switches in a production network that previously only rely on local username/passwords. Another motivation for tac_plus is to run it up in a lab for testing …

Introduction to securing network device with TACACS+

Summary This article introduces the TACACS+ protocol and describes how it secures access to your network devices. TACACS+ is commonly applied to give administrators and engineers access to switches and routers. It is widely implemented on entreprise Cisco and Juniper networks. Radius is another popular protocol for doing the same job. Radius is often the …