Cisco Flex link
Introduction Flex link is a Cisco solution which replaces STP in certain network topologies. It works by detecting link down […]
Ethernet
Convergence, Ethernet
Resilient Ethernet Protocol (REP)
Introduction I’m writing a short summary of REP as part of my CCDE studies. REP is an alternative protocol used
Announcement
Sign up for ipSpace webinars and get a 20% discount
I posted about ipSpace webinars a couple of days ago and Ivan has kindly agreed to provide a 20% discount
Announcement
IPSPACE Webinars with Ivan Pepelnjak
Introduction Want to learn more about data center networks? How do you scale a data center? How do you deploy
Announcement
Cisco VIRL – Let’s go viral!
Cisco VIRL Most of you have probably heard something about VIRL already. There were some rumors going around and then
Announcement
One year as a CCIE
One year ago today I passed the lab in Brussels! Time flies. That means I have one year to recert.
Network Design
Network Campus Design
Introduction Modern networks need to be enabled for voice and video. These applications do not tolerate a lot of loss
Convergence, Ethernet
Detecting Network Failure
Introduction In todays networks, reliability is critical. Reliability needs to be high and convergence needs to be fast. There are
BGP, MPLS
Scaling PEs in MPLS VPN – Route Target Constraint (RTC)
Introduction In any decent sized service provider or even an enterprise network running MPLS VPN, it will most likely be
BGP
iBGP – Fully meshed vs Route Reflection
Intro This post looks at the pros and cons with BGP Route Reflection compared to running an iBGP full mesh.