This post covers a non-best practice design for the Management Network in Cisco ACI (Application Centric Infrastructure). The implementation of Management In-band instead of the recommended Management Out-Of-Band (OOB). An OOB network increases the odds that you will be able to access the devices in the event that the fabric is experiencing production issues and is unavailable.
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Becoming a CCIE: What I have learnt
I would like to share my experience of becoming CCIE Routing and Switching v5 certified. It is kind of a “tradition” to do it and I think it can be very helpful to other people pursuing the same goal. Different points of view were very positive for me to get well prepared technically and psychologically for the day of the exam.
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NAT: IPsec DMVPN and Internet Access – Review NAT Deployment scenarios
This post describes different deployment scenarios where Network Address Translation (NAT) is implemented with IPsec DMVPN.
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Multicast – Inter AS Multicast (Auto-RP and BSR), Anycast RP MSDP, MSDP SA Filter and MBGP
If you want to learn how multicast works and different multicast protocols, you need to read this post. It will guide you through the details progressively to fully understand the key concepts.
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IPsec: Crypto Maps, GRE and VTI
This post describes the configuration of IPsec using four different methods in order to achieve authentication and encryption. We will compare the configuration requirements as well as the overhead introduced by each method from the point of view of packet size.
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MPLS and BGP Multipath, Prefix Independent Convergence (PIC) and Best External
The aim of this post is to explain in detail some key Border Gateway Protocol (BGP) features in a Multiprotocol Label Switching (MPLS) network topology.
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Scalable EIGRP Designs – Convergence Optimizations
This post covers in detail the characteristics of the EIGRP routing protocol such as convergence procedure, timer and query domain, and route selection.
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OSPF Forward Address – Case Studies
This post covers in detail some complex scenarios where OSPF is implemented for routing and the OSPF LSAs that come into play in each of them.
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