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<p>I decided to make Netmiko the default configuration deployment method netlab uses for Cisco IOS XR. It works great, and</p>
Three critical vulns demand your attention, one a make-me-root mess in Nexus 9000 Series Switches that you can mitigate, not fix
Three Cisco 8000 routers on IOS XE 26.2. We walk the key exchange from classical to PPK to native ML-KEM-768 hybrid, then prove a phased rollout across hub and spokes works with ze...
Insider Brief PRESS RELEASE — Cisco and KETS Quantum Security today announced a major milestone in secure communications by successfully integrating KETS’ chip-based Quantum Key Di...
No more CLI typing. This is where years of DevNet programmability skills land on a real world scenario: Ansible over NETCONF, one file for the posture, and proof the IPsec tunnels...
<p>Now that we know what we need to make layer-3 services (<a href="/2012/01/bgp-free-service-provider-core-in/">BGP-free core</a> transporting IPv4 and...
<p><em>netlab</em> release 26.10 adds <a href="https://netlab.tools/module/srv6/#platform-support">new SRv6 implementations and features</a>...
<p><strong>TL&amp;DR:</strong> Programmers writing Cisco Nexus OS code should have known better. They didn&rsquo;t (care?).</p> <p>One can und...
An ML-DSA-65 certificate is 6x larger than RSA-2048. Part 10 builds the PKI externally, imports it into Cisco routers via PKCS#12, swaps PSK for ML-DSA signatures, and measures exa...
<p><strong>TL&amp;DR:</strong> It&rsquo;s really hard to figure out when a Cisco IOS box configured via its CLI reports a configuration error.</p>
<p>I wanted to make my <a href="https://github.com/ipspace/srv6-examples">SRv6 lab examples</a> usable with more platforms. Adding <em>netlab</...
The final post in the IPsec series: a fully quantum-safe tunnel on Cisco 8000 routers, both pillars live on real hardware. Part 11 closes the arc with the migration playbook and wh...
<p>The concept of a <a href="https://blog.ipspace.net/2012/01/bgp-free-service-provider-core-in/">BGP-free core</a> is decades old:</p> The netwo...
<p>When <a href="https://www.linkedin.com/in/diivious/">Donnie Savage</a> announced the <a href="https://www.linkedin.com/posts/diivious_openeig...
I have created lab on CML. where I have 2 DCs DC1 - 64500 DC2 - 64501 DC1 - Spine1, Compute Leaf1, Service Leaf1, Border Leaf1 DC2 - Spine2, Compute Leaf2, Service Leaf2, Border L...
Cisco has released patches to address a critical security flaw affecting 10 Silicon One-based Nexus 9000 switches that could allow an unauthenticated, remote attacker to execute co...
Explore the fundamentals of Segment Routing in this technical deep dive. Learn how SR MPLS and SRv6 work, the benefits of stateless traffic engineering, and why TI-LFA is essential...
<p>The beauty of SR-MPLS is that it&rsquo;s a drop-in replacement for the traditional (LDP- or RSVP-based) MPLS control plane. For</p>
<p>As we discussed in the <a href="/2026/09/sr-mpls-bgp-free/">BGP-Free Core with SR-MPLS</a> blog post, SR-MPLS works as a drop-in replacement for the...
So i m task on redesigning our datacenter and im really confused since i know standard networking doesn't necessarily apply to datacenter setup. Our traffic is mostly North South a...
<p>In late June, we added GRE tunnels to <em>netlab</em>, including a <a href="https://github.com/ipspace/netlab/pull/3573">Junos implementation&l...
Outdoor and uncarpeted spaces don’t have to be blind spots. Cisco now extends full Meraki dashboard management to the IE3500 Rugged Series, bringing your entire network under one t...
<p>After Kazuya Takahashi released his wonderful <a href="https://github.com/rclab-dev/network-xray">network-xray</a> tool and <a href="https://...
Cisco and Rafay portfolio integrations help neocloud and sovereign cloud operators onboard customers faster, improve GPU utilization, and deliver secure, multi-tenant infrastructur...
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