Everything tagged routing, newest first. Tags come from the classifier reading each item's summary; 394 tags used 25 times or more have their own page.
SR-MPLS can replace traditional MPLS control planes like LDP or RSVP without disrupting a BGP-free transport core, as shown in a workshop scenario where the same core topology continued working after swapping in SR-MPLS and adding hosts plus BGP routing.
Late June netlab added GRE tunnel support, including Junos, but integration tests with FRR containers exposed a Junos OSPFv3 failure because it incorrectly sent DBD packets over GRE tunnels with MTU set to zero, a behavior meant for virtual links.
RPKI has significantly improved protection against prefix hijacking, but a broader review of BGP attacks shows that four attack classes remain unaddressed by cryptographic validation and still depend on local filtering, static limits, and reactive mitigation.
More than 100 APNIC Members attended the South Asia APNIC Sub-Regional Forum at SANOG 44 in Kathmandu, where their feedback will help shape APNIC’s future regional priorities.
The post introduces a Segment Routing workshop example demonstrating multi-vendor SR-MPLS in the same lab topology, with Arista EOS on PE1, FRRouting on P, and SR Linux on PE2, marking a return to regular programming after summer and linking it to prior workshop examples.
Netlab release 26.08 introduces major updates including ArcOS support, VPP with control planes, SONiC containers, and IPv4/IPv6 access control lists in the routing module.
Persistent partial reachability is a fundamental aspect of the Internet, significantly influenced by a few long-lived peninsulas, and understanding these can enhance operational clarity and measurement accuracy.
The IETF 126 meeting discussed advancements in BGP security, focusing on BGP ORIGIN, ASPAs, PAVA, and ASRAs, aiming to enhance the robustness and reliability of internet routing.
In-depth testing reveals that nearly 70% of BGP paths undergo ORIGIN attribute rewrites by transit providers, impacting global routing and suggesting the need to deprecate ORIGIN in route selection.
Small RPKI publication servers play a crucial role in the Internet's trust infrastructure by enhancing routing security, and understanding their operators and purposes reveals strengths and weaknesses in the current system.
The Internet's development relies on community collaboration, with efforts like RPKI adoption and nurturing future operators being crucial to its security and growth.
The Cisco 8650 Secure Routers provide ultra-secure, scalable, and fast routing solutions for enterprise data centers, featuring advanced quantum-resistant security and high-performance capabilities for the AI era.
Designing and structuring BGP Router IDs in IPv6-native networks involves careful planning to ensure network stability, scalability, and efficient routing.
Application Services for Private Origins, now in closed beta, enables routing of public hostnames to private IP origins without needing public IPs or additional software.
BGP's susceptibility to routing hijacks and path leaks can be mitigated by RPKI, but First AS enforcement offers a simpler solution for certain forged paths.
The article discusses EVPN centralized routing design issues, focusing on ARP challenges and Arista EOS routing implementations using a simple lab topology with a spine switch as a router and leaf switches as layer-2 switches.
The article argues against dismissing ephemeral BGP leaks during path hunting, highlighting their role as indicators of inadequate BGP route policy enforcement, which could lead to security vulnerabilities.
Integrating IRB into EVPN MAC-VRFs, or stretched VLANs, involves adding IP addresses and possibly a shared anycast gateway, but poses challenges in multi-vendor environments, as discovered during EVPN lab exercises and integration tests.
Netflix's ML model serving infrastructure, enhanced by Switchboard and Lightbulb, optimizes personalized experiences by centralizing model routing and abstraction, ensuring rapid innovation, scalability, and seamless client integration while addressing latency and failure risks.
DDoS attacks remain a significant threat on the Internet, prompting the development of ReAct for efficient mitigation against AR-DDoS attacks in both symmetric and asymmetric routing scenarios.
Naveen Kumar Devaraj identified that Arista EOS generates MAC-IP routes with and without IP addresses, doubling the EVPN BGP table size, and shared insights via a LinkedIn comment.
PITA 30 highlighted the risks of insecure routing and the potential for rapid improvements in the Pacific region, with PITA 31 as the target for implementing solutions.
Strengthening routing security is crucial, and APNIC provides tools that enhance network protection through improved validation and visibility for operators.
The author occasionally finds bugs in FRRouting, which are quickly addressed by developers, and testing fixes is simplified using netlab with an existing topology file.
An analysis of over 80 billion BGP updates shows that 'noisy' updates inflate MRT archives, bias measurements, and emphasize the need for careful interpretation of BGP data.
Recent updates to online BGP labs enhance device flexibility, allowing various network operating systems as external routers, but limitations remain in configuring all BGP features, especially with unsupported devices, which may cause lab failures.
IS-IS protocol efficiently separates node and area address management between routers, but faced challenges when adapted for different networking addressing systems.
Recent updates to online BGP labs now allow the use of various external lab devices, enhancing flexibility and efficiency in practicing BGP features without extensive preparation.
A brief BGP hijack incident in 2025 highlighted vulnerabilities in routing security, particularly when attackers target weaknesses during provider onboarding processes.
Routing loops can lead to network congestion and security vulnerabilities, but IPv6 provides straightforward solutions to prevent these issues, enhancing Internet stability.
Geoff Huston discusses the purpose and contents of the CIDR Report, emphasizing its relevance and utility for the Internet routing community.
While testing IPv4 ECMP in Arista cEOS containers with an MPLS/anycast scenario, MPLS labels were missing in ICMP replies, prompting an investigation into PE/P-router behavior using a BGP-free core.
Bgproutes.io offers advanced routing observability by aggregating data from numerous sources and providing tools for real-time insights, including BMP support and integrated RPKI ROV and ASPA validation.
The netlab release 26.03 introduces significant enhancements including new Cisco IOS XR features, Juniper cRPD support, EVPN/VXLAN on Juniper, OpenBSD BGP support, and SR-MPLS for OSPFv2 across multiple platforms.
Ethan and Holly explore multicast fundamentals with expert Lenny Giuliano, discussing principles, real-world applications, and OSPF routing in live networks.
Bruce Davie's article critiques the push for faster-than-Dijkstra algorithms in link-state routing, highlighting that Dijkstra's algorithm efficiently handles large networks, as demonstrated by its performance on a 2000-node network in 2003.
A recent MANRS paper proposes that increased enterprise demand could be the key factor in enhancing routing security.
Tanstack Start, developed by Tanner Lindsay, is a DX optimized full stack framework that offers type-safe server functions, server-side rendering, and easy configuration, aiming to improve upon the complexities and issues of previous frameworks like Next.js.
While traditional routing protocols like OSPF select the shortest path, PCE and PCEP enable constructing network paths based on various factors, optimizing traffic flow.
This course offers a comprehensive exploration of computer networking fundamentals, covering the entire networking stack, error detection, routing, and security, designed for GATE aspirants and computer science students, with a focus on practical problem-solving and theoretical understanding.
The lab exercise advances from basic VXLAN Ethernet bridging to routing between VXLAN segments using unique unicast IP addresses on layer-3 switches, with options to run the lab on various platforms including netlab, GitHub Codespace, or Apple-silicon Mac.
The article discusses an inference method leveraging spatial correlation between a network prefix's origin and the router's location to enhance location community attachment.
An automated routing policy configuration error at the Miami data center led to an unintended leak of Border Gateway Protocol prefixes, prompting discussions on the impact and subsequent policy changes.
OSPF and IS-IS differ in inter-area route handling, with OSPF copying intra-area routes into the backbone, while IS-IS uses level-1 areas like totally stubby OSPF areas without copying level-2 routes.
A reader struggled with implementing a multi-vendor multicast VPN over MPLS, finding GRE tunnels within a VRF as a workaround, highlighting fundamental differences between GRE/IPsec/VXLAN tunnels and MPLS paths, which are designed for different network functions and performance optimizations.
The scope of failure awareness significantly impacts routing performance and resilience in Low Earth Orbit satellite constellations by influencing the ability to adapt to failures and maintain efficient communication.
In an OSPF-to-IS-IS migration, using IS-IS areas is essential for implementing a routing hierarchy, despite the routing hierarchy being influenced by circuit types and levels.
Geoff Huston examines potential shifts in the routing system's stability by 2025, analyzing factors that may influence its reliability and efficiency.
Geoff Huston's annual analysis of BGP routing table growth for 2025 provides insights into current trends and future projections, highlighting the challenges and developments in internet infrastructure.
LLM-D is an open-source project that optimizes AI inference by distributing workloads across a Kubernetes cluster, reducing costs and latency through intelligent routing and caching mechanisms.
