INTRODUCTION For resiliency purposes, Layer2 topologies are designed and deployed in a physical loop. Unlike the IP protocol which uses the TTL field as a built-in mechanism for preventing packets from looping endlessly through the network, the Ethernet protocol does not provide such facility and therefore, unless we can prevent a layer2 loop, the following problems would occur: Broadcast storms – endless broadcast of frames through the entire L2 domain Hosts end-up receiving duplicates frames from different switches Unstable mac-address tables due to continuous host mac address learning on different ports The STP (Spanning Tree Protocol) was developed to avoid…
Automating a graceful shutdown of the VMware VCSA upon power cut to the ESXi host using PowerChute and APC UPS.
Often, people would come to me with a technical escalation which is not actually technically difficult to resolve, rather technically misunderstood. So let’s see what it takes to overcome that.
As a network engineer, network address translation (NAT), isn’t a mystery. However, I decided to write this blog to document how to configure DNAT (aka. NAT 1:1 or DNAT) on the F5 BIGIP appliance.