In this post, we explore the operation of Cisco FabricPath (FP) and more specifically Vlan information propagation in this fabric in comparison with other platforms: Catalyst for example from the same vendor. Introduction The case is to learn how the switches that are part of the LAN network learn about and support Vlan operation: is…...
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Let’s explore in this article the general operation of Starlink and how it can benefit. Introduction Undoubtedly Starlink helps resolve many connectivity issues and at least starting to offer a cost effective alternative to traditional costly satellite solution with regards to the same use cases. But it is not limited to. Let’s explore in this…...
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In this blog, we discuss when a gateway decides that it’s not a good gateway any more and proposes a new gateway to the host by setting redirection. Introduction We explore how a gateway (a router) present in a LAN handles routing to the outside of this network and uses redirection to enhance this operation….
In this blog, we study RPF operation. Introduction This blog is a part of a serie of blogs about multicast routing: Test network In our test network RPF in action At R2 A “show ip interface brief” shows Digging into the interface tunnel0 details The tunnel was created by PIM process to join the RP…...
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In this blog, we will setup a Checkpoint lab using virtualbox and gns3 on windows. Introduction In this lab we implement a basic security architecture to demonstrate the operation of a firewall cluster to protect our network. Our “security domain” is segmented into four zones: Security topology Our security topology is compound by two security…...
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This post is part of a series of blogs about RIP functionning from the basic to the more complex operation. Let’s recall that RIP stands for Routing Information Protocol and is an IGP (Interior Gateway Protocol) in the same category as OSPF, EIGRP, etc.; most implementations of RIP are not centralized (distributed) meaning that no…
