Photo by Brett Sayles on Pexels.com First, Lets bring up a linux bond with LACP (type=4). Server side config: nmcli con add type bond con-name bond0 ifname bond0 mode 802.3ad ip4 18.104.22.168/24 nmcli con mod id bond0 bond.options mode=802.3ad,lacp_rate=slow nmcli con add type bond-slave ifname enp4s0f0 con-name enp4s0f0 master bond0 nmcli con add type bond-slave … Continue reading Lets understand LACP state machine using Linux bond
Photo by Towfiqu barbhuiya on Pexels.com In this blog, i will explain the basics of connection tracking in form of FAQs. A. Connection tracking maintains the state of the connection? Ok, What does it mean? There are lots of packets coming-in and going-out of a system connected to the network. Admin knows that. But what … Continue reading The basics of connection tracking and offload
Along with my co-presenter, I am explaining the way to avoid ovn gateway and directly establishing communication with DUT to stress DUT at line rate with Geneve packets. https://www.youtube.com/watch?v=rE4ADKq96G0&list=PLaJlRa-xItwARDGAUp7lXviOgOhcRxSU-&index=8 Presented at OVSCon 2021 Fall
Photo by Jordan Benton on Pexels.com Recently released Red hat openstack platform 16.2 introduced a tech preview integration feature called timemaster service. Time synchronization is one of the vital piece for vRAN infrastructure (explained towards the end of the blog) and timemaster provides HA between PTP (Precision time protocol) and chrony (NTP based) time services. … Continue reading Timemaster, Openstack and vRAN
VPN is not a new concept and almost everyone working with IT or ITES sectors are aware of it. However, Today's pandemic situation have taken VPN concepts beyond IT folks. For example, People working in Financial institutions, Bank employees who are working from home, use it today to connect to their company's IT resources over … Continue reading Lets understand OpenVPN !
Along with my co-presenter, I am explaining the ways and difficulties having 100 gig nics on compute nodes and enabling traffic steering using ovs hardware offload. https://www.youtube.com/watch?v=d2XfK8GN2Tg Presented at OVSCon 2019 Fall
Photo by Pixabay on Pexels.com Networking issues are very complex and critical for any IT infrastructure. We fix one and ten new pops up from no where. As it is very critical foundation for any enterprise/telco network on which entire business is built and run, any sluggishness/break down/breach in it are the nightmare issues for … Continue reading Meet Dr. Network troubleshooter !
Photo by Brett Sayles on Pexels.com Purpose of this blog is to provide a reference guide explaining all basics of configuration/troubleshooting issues pertaining to Ovs Hw offload + Openstack + Mellanox smart NICs Lets begin. Building blocks: Below drawing depicts the building blocks involved when ovs hw offload deployed with Openstack. This feature is available … Continue reading Lets understand the openvswitch hardware offload!
Photo by Flickr on Pexels.com Dpdk uses its own vendor supported poll mode drivers and kernel needs to be told that. Kernel needs to provide pass through drivers for those devices. These drivers map/bind device memory to user space application and registers interrupt. Applications use appropriate PMDs to poll memory of these devices in order … Continue reading Dpdk, drivers and Ovs !!
Problem: Deploying heterogeneous compute nodes (NICs in this document) using TripleO Openstack deployment tool. Solution: Composable roles give a great flexibility to the deployment and are good way to have own customized environment while using Redhat director (Triple O upstream project). Test deployment contains 2 compute nodes and 3 controller nodes. Both computes nodes are … Continue reading Working with TripleO Composable Roles!!