While working on VPCs I have encountered this awesome tool in AWS console, called reachability analyzer. As the name suggests this tool is used to analyze the connectivity between two endpoints , aws provides a very good list of options to choose an endpoints, see below… This can be a very useful tool while troubleshooting.… Read More AWS Troubleshooting : Reachability analyzer
Recently while working on VPCs I have seen this new option in amazon VPC. Resource-map provides an object map for VPC elements. Like below, it tells that my private and public subnet has route table association and if that route table has an external connectivity with igw or not. It is very useful information while… Read More AWS VPC : Troubleshooting Network connectivity with Resource-MAP
Whose job is sustainability? There are network admins who might have never seen the power bills of their network. “Power saving skills” is something which is not mentioned any network engineer’s job profile but does that mean it is not part of your job ? “Reducing carbon emission” is not mentioned in any of the… Read More Sustainable Infrastructure in Cisco Portfolio
I was in CiscoLive 2023 Amsterdam and I got to visit this really cool product called FlexPod. This single rack has your Compute, storage, Network(Nexus switches) and Fabric interconnects(FI). Who wouldn’t like having something like this in their datacenter. Since the day all these individual techs and boxes are available, people are looking to integrate… Read More FlexPod your DC with Cisco and NetApp collaboration
ChatGPT openAI tool is really impressive and people think that it can eat up few jobs. Before it makes anybody else’s life easy I thought I will make mine first. So I tasked chatGPT to write an article for me. I choose the easy topic because I know the tool is very new and it… Read More ChatGPT to write tech blogs
What is compliance reporting. Network Configuration compliance is very important for all business entities for various purposes like external or internal audits, maintaining standards within the org etc. However, it is not that easy to maintain the uniformly complaint configuration when you have thousands of devices scattered globally serving in different business domains. In compliance… Read More Quick Network Automation post on Cisco NSO Compliance Reporting.
Recently, I have started my data center journey and was looking for something which can give me firsthand Cisco ACI experience. For ACI you need a lot of physical gear and the kind of lab I do it is totally impossible for me to practice something like this. So I looked for a virtual method… Read More Getting Started with Cisco ACI with ACI Simulator.
I wrote few blogs on BGP EVPN and also on VxLAN earlier. My previous blogs were focused on IOS-XE and IOS-XR devices, recently I have started my Data Center journey and hence I wanted to do some labs on Nexus devices as well and what better place than GNS3 for this ? I got to… Read More GNS3 LAB Cisco : Nexus 9000v Control-plane based VxLAN BGP-EVPN Bridging Config and Verification.
I have written a few blogs earlier on VxLAN. You can check them in the below links. ASR1000 : VxLAN Unicast mode Configuration and Verification ASR1000: Cisco Vxlan Multicast Mode Configuration and Verification Since then VxLAN has changed a lot and I am planning to write a series of articles on VxLAN and EVPN on… Read More GNS3 Cisco LAB : Nexus 9000v NxOS VxLAN Lab and concept.
So far we have seen EVPN single home and EVPN multihome setup and configuration with Cisco csr1000v router. You can find the links for those posts below. EVPN -Single home GNS3 LAB Cisco : BGP-EVPN Single Home Configuration EVPN -Multi homeGNS3 Lab Cisco : EVPN Multihome Concept and Configurations Note : As per Cisco docs… Read More GNS3 LAB Cisco : EVPN (BGP/MPLS) IRB (integrated routing and bridging) Configuration and Verification.