NSA, ODNI and CISA Release 5G Analysis Paper
Useful reading to understand network integrity, impacts and risk of mobile networks
BGP-Free MPLS Core with Segment Routing
After I created the Segment Routing lab to test the relationship between Node Segment ID (SID) and MPLS labels (and added support for IS-IS, SR-MPLS, and BGP to netsim-tools), I was just a minor step away from testing BGP-free core with SR-MPLS.
I added two nodes to my lab setup, this time using IOSv as those nodes need nothing more than EBGP support (and IOSv is tiny compared to IOS XE on CSR):
BGP-Free MPLS Core with Segment Routing
After I created the Segment Routing lab to test the relationship between Node Segment ID (SID) and MPLS labels, I was just a minor step away from testing BGP-free core with SR-MPLS.
I added two nodes to my lab setup, this time using IOSv as those nodes need nothing more than EBGP support (and IOSv is tiny compared to IOS XE on CSR):
Why Companies Are Migrating Legacy Systems to Cloud Infrastructure
Legacy-to-cloud migrations are happening for a wide range of reasons and are likely to only continue in earnest as businesses adjust to post-COVID location distributed work.Tech Bytes: Auto Dealer Takes Network Control With Fortinet (Sponsored)
Frustrated by poor service from an MSP, the IT team at White Family auto dealers needed a more efficient way to connect locations while ensuring high performance and strong security to meet regulatory requirements. The company chose Fortinet for its network and security equipment. Fortinet is our sponsor, and we talk with Shane Williams, Director of IT; and Paul Provorse, System Administrator about going all-in with Fortinet to run their own show.
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Tech Bytes: Auto Dealer Takes Network Control With Fortinet (Sponsored)
Frustrated by poor service from an MSP, the IT team at White Family auto dealers needed a more efficient way to connect locations while ensuring high performance and strong security to meet regulatory requirements. The company chose Fortinet for its network and security equipment. Fortinet is our sponsor, and we talk with Shane Williams, Director of IT; and Paul Provorse, System Administrator about going all-in with Fortinet to run their own show.How the Internet Really Works, Part 1
I’m a bit late posting this … but this Thursday (an odd day for me) I’m running How the Internet Really Works, Part 1, over at Safari Books Online. From the page:
You can register for the training at the link above. I’ll be giving part 2 of How the Internet Really Works next month.
Tracking Internet Shutdowns
Internet shutdowns harm societies, economies, and the global Internet infrastructure – that’s why we’re tracking disruptions on the Internet Society Pulse platform. There are thousands of disruptions to Internet access every day all over the world, but not all of them are the result of deliberate shutdowns. Lengthy outages are usually the result of technical errors, routing misconfigurations, or infrastructure failures. […]
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The Effectiveness of AS Path Prepending (1)
Just about everyone prepends AS’ to shift inbound traffic from one provider to another—but does this really work? First, a short review on prepending, and then a look at some recent research in this area.
What is prepending meant to do?
Looking at this network diagram, the idea is for AS6500 (each router is in its own AS) to steer traffic through AS65001, rather than AS65002, for 100::/64. The most common method to trying to accomplish this is AS65000 can prepend its own AS number on the AS Path Multiple times. Increasing the length of the AS Path will, in theory, cause a route to be less preferred.
In this case, suppose AS65000 prepends its own AS number on the AS Path once before advertising the route towards AS65001, and not towards AS65002. Assuming there is no link between AS65001 and AS65002, what would we expect to happen? What we would expect is AS65001 will receive one route towards 100::/64 with an AS Path of 2 and use this route. AS65002 will, likewise, receive one route towards 100::/64 with an AS Path of 1 and use this route.
AS65003, however, will receive two routes towards 100::/64, one with an AS Continue reading
Network Break 332: Juniper Teases SASE Offering; IBM Gets Small With 2nm Chip
Today's Network Break covers IBM's new 2nm chip process, Juniper's first step toward a SASE offering, whether secondary markets for network gear might be an option for companies dealing with supply chain shortages, and more tech news.Network Break 332: Juniper Teases SASE Offering; IBM Gets Small With 2nm Chip
Today's Network Break covers IBM's new 2nm chip process, Juniper's first step toward a SASE offering, whether secondary markets for network gear might be an option for companies dealing with supply chain shortages, and more tech news.
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The Week in Internet News: Many U.S. Residents Support Community Broadband
From the community: A new poll from Morning Consult finds that more than half of U.S. residents trust local governments to provide broadband services, and just 14 percent believe local governments should be prohibited from providing broadband. Currently, 18 states limit or outright prohibit local governments from providing their own broadband. In those states, “these […]
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