The OSPF and ARP on Unnumbered IPv4 Interfaces triggered an interesting consideration: does ECMP work across parallel unnumbered links?
TL&DR: Yes, it works flawlessly on Arista EOS and Cisco IOS/XE. Feel free to test it out on any other device on which netlab supports unnumbered interfaces with OSPF.
The OSPF and ARP on Unnumbered IPv4 Interfaces triggered an interesting consideration: does ECMP with across parallel unnumbered links?
TL&DR: Yes, it works flawlessly on Arista EOS and Cisco IOS/XE. Feel free to test it out on any other device on which netlab supports unnumbered interfaces with OSPF.
Today, we're delighted to announce the launch of the new Ansible Community Forum - a single starting point for questions and help, development discussions, events, and much more. Everyone is invited, whether you are an Ansible user, contributor or developer, we are all community! Register here to join us!
Here is a screenshot of the forum's main page:
For those who are familiar with forums, we hope you'll feel right at home. For those who may be new, please don't worry! We have a list of tips & tricks here, and you're always welcome to check the guides and post in the feedback section to help us shape our online community.
Forums are only successful if they are used. To make that happen, the Ansible Community Team is looking to make this the real home of the Ansible Community - a place for users to get help, to find an event or local meetup, and a jumping-off point for development and contribution discussions. That means we need you to come and participate! Tell us what you're up to, post your thoughts or your questions, sign up for an Continue reading
https://codingpackets.com/blog/proxmox-vyos-image-import-and-use
ECMP is crucial for scaling and performance in modern data centers and wide-area networks, which rely on hash-based path selection. It leverages path diversity and keeps a flow’s packets on the same path, preventing reordering with useful properties like stateless operation and no reordering.
While simple and widely used, ECMP has some limitations. For example, it does not always distribute traffic evenly across all available paths. However, due to its ease of hardware implementation, ECMP remains the predominant approach. The core enabler for ECMP is hashing, which allows packet-by-packet path selection in a distributed manner across switches. ECMP limitations have also started getting more attention with the surge in building GPU clusters but fabrics suffer from Poor hashing due to a lack of flow entropy.
In this post, we’ll dive into ECMP and use statistical analysis to better understand the limitations.
Here is a simplified explanation of how the lookup process functions. We aim to perform a prefix lookup that directs us to a specific ECMP Group listed in the ECMP group table. Each of these ECMP groups contains ECMP member counts for the ECMP group. A hash function takes Packet fields i.e. our typical five tuple (Source Continue reading
https://codingpackets.com/blog/vyos-qemu-image-build
When Jim Keller talks about compute engines, you listen. And when Keller name drops a programming language and AI runtime environment, as he did in a recent interview with us, you do a little research and you also keep an eye out for developments. …
The post Is Mojo The Fortran For AI Programming, Or More? first appeared on The Next Platform.
Is Mojo The Fortran For AI Programming, Or More? was written by Timothy Prickett Morgan at The Next Platform.
Virtual Application Networks, or VANs, are today’s Heavy Networking topic. Our guest is Ted Ross, motive force behind the Skupper.io project. Skupper builds VANs in Kubernetes clusters that are conceptually like a VLAN or VPN, except that all the magic happens at layer 7. Skupper is based on the Advanced Message Queueing Protocol (AMQP), making it effectively a message bus used to interconnect application messages inside of mTLS tunnels running on top of whatever L3 network is available. If you're confused, don't be. We talk it all out, and explain why it's relevant to today's networking pros.
The post Heavy Networking 699: Connecting Multicloud Kubernetes Clusters With Virtual Application Networks appeared first on Packet Pushers.
Welcome to Technology Short Take #170! I had originally intended to get this published before the long Labor Day weekend, but didn’t quite have it ready. So, here you go—here’s your latest collection of links from around the internet focused on data center and cloud-related technologies. I hope that you find something useful here.
kube-proxy.
In the dynamic world of modern applications, efficient load balancing plays a pivotal role in delivering exceptional user experiences. Customers commonly leverage load balancing, so they can efficiently use their existing infrastructure resources in the best way possible. Though, load balancing is not a ‘one-size-fits-all, out of the box’ solution for everyone. As you go deeper into the details of your traffic shaping requirements and as your architecture becomes more complex, different flavors of load balancing are usually required to achieve these varying goals, such as steering between datacenters for public traffic, creating high availability for critical internal services with private IPs, applying steering between servers in a single datacenter, and more. We are extremely excited to announce a new addition to our Load Balancing solution, Local Traffic Management (LTM) with deep integrations with Zero Trust!
A common problem businesses run into is that almost no providers can satisfy all these requirements, resulting in a growing list of vendors to manage disparate data sources to get a clear view of your traffic pipeline, and investment into incredibly expensive hardware that is complicated to set up and maintain. Not having a single source of truth to dwindle down ‘time to resolution’ Continue reading
One of my readers wanted to use EIBGP to load balance outgoing traffic from a pair of WAN edge routers (hint: wrong tool for this particular job1). He’s using a design very similar to this one with VRRP running between WAN edge routers, and the adjacent firewall cluster using a default route to the VRRP IP address.
The problem: all output traffic goes to the VRRP IP address which is active on one of the switches, and only a single uplink is used for the outgoing traffic.
One of my readers wanted to use EIBGP (hint: wrong tool for this particular job1) to load balance outgoing traffic from a pair of WAN edge routers. He’s using a design very similar to this one with VRRP running between WAN edge routers, and the adjacent firewall cluster using a default route to the VRRP IP address.
The problem: all output traffic goes to the VRRP IP address which is active on one of the switches, and only a single uplink is used for the outgoing traffic.
On today's Kubernetes Unpacked, Michael and Kristina catch up with Roberth Strand, Principal Cloud Engineer at Amesto Fortytwo to talk about all things Internal Developer Platform (IDP) on Kubernetes and beyond. Roberth dives into what an IDP is, what it isn’t, and how all engineers should be thinking about IDPs. If you’re interested in diving into platform engineering, this is the perfect episode for you.
The post Kubernetes Unpacked 034: Platform Engineering And Internal Development Platforms On Kubernetes appeared first on Packet Pushers.