A few weeks ago, Urs Baumann posted a nice example illustrating the power of netlab: a 10-router topology running OSPF, IS-IS, and BGP:
He didn’t post the underlying topology file, so let’s create a simple topology to build something similar.
Hello my friend,
In the previous blog post we briefly touched on the conditionals, when we talked about looking for presence of some element in Python list or Go slice. So I thought, it would make sense to introduce now the key concept of the code flow control, which are conditionals and loops. These items are essential for any production code, so let’s see how it works.
Surfing through the LinkedIn today I’ve found an interesting picture, which was attributed to Elon Musk and Twitter (or X, how is that called now):
I don’t if that is really related to Mr Musk and Twitter in any capacity, but thoughts it contains are quite important: your first remove all unnecessary steps and optimize everything you can, before you start any automation. That’s very true and in our network automation trainings we talk about how to optimize network operations processes to ensure that they are viable for automation. Join our network trainings to learn how to build viable automation:
We offer the following training programs in network automation for you:
The Cisco Aironet AIR-AP1142N-E-K9 is a versatile, legacy dual-band access point that uses 802.11n (Wi-Fi […]
The post Configuring the Cisco Aironet AP 1142 first appeared on Brezular's Blog.
Contrary to the OSPF world, where we have to use two completely different routing protocols to route IPv4 and IPv6 (unless you believe in the IPv4 address family in OSPFv3), IS-IS provided multi-protocol support from the very early days of its embracement by IETF. Adding IPv6 support was only a matter of a few extra TLVs, but even there, IETF gave us two incompatible ways of making IPv6 work with IS-IS.
Want to know more? You’ll find the details in the Dual-Stack (IPv4+IPv6) IS-IS Routing lab exercise.
Fernando Gont published an Individual Internet Draft (meaning it hasn’t been adopted by any IETF WG yet) describing the Problem Statement about IPv6 Support for Multiple Routers and Multiple Interfaces. It’s so nice to see someone finally acknowledging the full scope of the problem and describing it succinctly. However, I cannot help but point out that:
Anyway, Fernando wraps up his draft with:
Just because you are the number one supplier of servers, storage, and PCs in the world does not mean the job of building those machines and making money is easy. …
Fat Server Spending Props Up Slowing AI Servers At Dell was written by Timothy Prickett Morgan at The Next Platform.
Welcome to Technology Short Take #184! This Tech Short Take is a bit shorter than the usual ones, but then again this week—at least in the US—is a bit shorter than most weeks due to the Thanksgiving holiday. Even so, I hope that I’ve managed to include some information that folks find useful. Also, thanks to some feedback from readers, I’ve tried hard to ensure that links are more descriptive and informative than they’ve sometimes been in the past; let me know how I did. Now, on to the content!
If you want to buy an exascale-class supercomputer, or a portion of one so you can scale up, there are not a lot of places to go shopping because there are not a lot of companies who have a balance sheet that is big enough to get all of the parts to build the machines. …
HPE Upgrades Supercomputer Lineup Top To Bottom In 2025 was written by Timothy Prickett Morgan at The Next Platform.
Speeds and feeds are great, but hardware is only as useful as the software that can harness it, and, for AMD, that’s the ROCm software stack. …
AMD ROCm 6.3 Has Goodies For AI Aficionados And HPC Gurus Alike was written by Tobias Mann at The Next Platform.
On November 14, 2024, Cloudflare experienced an incident which impacted the majority of customers using Cloudflare Logs. During the roughly 3.5 hours that these services were impacted, about 55% of the logs we normally send to customers were not sent and were lost. We’re very sorry this happened, and we are working to ensure that a similar issue doesn't happen again.
This blog post explains what happened and what we’re doing to prevent recurrences. Also, the systems involved and the particular class of failure we experienced will hopefully be of interest to engineering teams beyond those specifically using these products.
Failures within systems at scale are inevitable, and it’s essential that subsystems protect themselves from failures in other parts of the larger system to prevent cascades. In this case, a misconfiguration in one part of the system caused a cascading overload in another part of the system, which was itself misconfigured. Had it been properly configured, it could have prevented the loss of logs.
Cloudflare’s network is a globally distributed system enabling and supporting a wide variety of services. Every part of this system generates event logs which contain detailed metadata about what’s happening with our systems around Continue reading
PARTNER CONTENT Since OpenAI first released ChatGPT into the world two years ago, generative AI has been a playground mostly for GPUs and primarily those from Nvidia, even though graphics chips from others and AI-focused silicon have tried to make their way in. …
Intel Xeon 6 With P-Cores Makes the Case For The Host CPU was written by Timothy Prickett Morgan at The Next Platform.
Auto-tagging allows the firewall to tag a policy object when it receives a log that matches specific criteria, creating an IP-to-tag or user-to-tag mapping. For example, when the firewall generates a traffic or threat log, you can configure it to tag the source IP address or User associated with that log using a specific tag name. These tags can then be used to automatically populate policy objects like Dynamic User Groups or Dynamic Address Groups, which in turn can automate security actions within security policies.
For example, let's say I have a policy that denies traffic from the Internet to the firewall's public IP or subnet whenever someone attempts to access random ports. This policy blocks the traffic and generates a traffic log. Now, if someone tries to target our public IP on port 22 (SSH), we might want to add them to a blacklist, which is a Dynamic Address Group. We can then create another policy that references this Dynamic Address Group to block any further traffic from this IP address.
A realistic use case is when you want to block a source IP after multiple failed authentication attempts to GlobalProtect. Typically, you can use Continue reading
If Amazon is going to make you pay for the custom AI advantage that it wants to build over rivals Google and Microsoft, then it needs to have the best models possible running on its homegrown accelerators. …
Anthropic And OpenAI Show Why Musk Should Build A Cloud was written by Timothy Prickett Morgan at The Next Platform.