Heavy Networking 491: Real-Life Segment Routing & PCE




Heavy Networking from Packet Pushers show

Summary: Segment routing is a mechanism for sending packets over a specific path through the network. There are several ways to do segment routing and multiple elements that go into the technology.<br> On today’s Heavy Networking podcast we explore segment routing as it’s used in a production network; specifically, ESnet, an international network that moves science data all over the world, including data from the Large Hadron Collider in Europe to scientists in the United States.<br> Our guest is <a href="https://twitter.com/forwardingplane" target="_blank" rel="noopener noreferrer">Nick Buraglio</a>, a network engineer at ESnet and a regular guest on Packet Pushers.<br> We discuss:<br> <br> * The flavor of segment routing that ESnet went with and why (SR-MPLS vs. SRv6)<br> * The problems ESnet was trying to solve<br> * Whether segment routing reduces complexity<br> * The role of IS-IS in the network<br> * Path Computation Element (PCE) and how forwarding decisions are made<br> * More<br> <br> Sponsor: Cradlepoint<br> The future of the WAN is wireless, but a wireless connection is only as good as the edge. Cradlepoint unlocks the power of advanced cellular through wireless edge solutions that are delivered the way you consume everything IT: as a service. Reliable. Elastic. Simple to manage from anywhere. Learn more about Cradlepoint’s cloud-managed LTE solutions at <a href="https://info.cradlepoint.com/PacketPushers.html" target="_blank" rel="noopener noreferrer">cradlepoint.com/packetpushers</a>.<br> Sponsor: Cumulus Networks<br> Today’s show is sponsored by Cumulus Networks. Build a private cloud environment that is open, modern, and simpler to manage with Cumulus Linux – the Linux-based open network OS that gives you total interoperability, and NetQ – which gives you end-to-end actionable insight from the host to the switch. To learn more about open networking, head to <a href="https://cumulusnetworks.com/open">https://cumulusnetworks.com/open.</a><br> Show Links:<br> <a href="https://packetpushers.net/podcast/heavy-networking-477-segment-routing-boot-camp-with-juniper-networks-sponsored/" target="_blank" rel="noopener noreferrer">Heavy Networking 477: Segment Routing Boot Camp With Juniper Networks (Sponsored)</a> – Packet Pushers<br> <a href="https://packetpushers.net/a-glimpse-at-two-approaches-to-segment-routing/" target="_blank" rel="noopener noreferrer">A Glimpse At Two Approaches To Segment Routing</a> – Ethan Banks<br> <a href="https://packetpushers.net/podcast/show-370-cisco-segment-routing-ipv6-sponsored/" target="_blank" rel="noopener noreferrer">Show 370: Cisco &amp; IPv6 Segment Routing (Sponsored)</a> – Packet Pushers<br> <a href="https://packetpushers.net/yet-another-blog-about-segment-routing-part-1/" target="_blank" rel="noopener noreferrer">Yet another blog about Segment Routing-Part 1</a> – Diptanshu Singh via Packet Pushers<br> <a href="https://packetpushers.net/yet-another-blog-about-segment-routing-part2-ti-lfa/" target="_blank" rel="noopener noreferrer">Yet another blog about Segment Routing-Part 2 : TI-LFA</a> – Diptanshu Singh via Packet Pushers<br> <a href="https://packetpushers.net/yet-another-blog-segment-routing-part3-sr-te/" target="_blank" rel="noopener noreferrer">Yet another blog about Segment Routing-Part 3: SR-TE</a> – Diptanshu Singh via Packet Pushers<br> <a href="https://twitter.com/forwardingplane" target="_blank" rel="noopener noreferrer">Nick Buraglio on Twitter</a><br> <a href="https://www.forwardingplane.net/" target="_blank" rel="noopener noreferrer">Forwardingplane.net</a> – Nick Buraglio’s blog<br>