Junos Segment Routing (SPRING)

MPLS is a core technology in service provider and large enterprise networks. Segment routing, also called SPRING, is emerging as a new traffic engineering method that can control pathing through the MPLS network via a central controller injecting a path into the source of traffic.

Overview by Juniper CTO Bikash Koley

Free Day One series books

  1. Day One: Configuring Segment Routing with Junos
    https://www.juniper.net/us/en/training/jnbooks/day-one/configuring-segment-routing-junos/index.page
  2. Day One: Inside Segment Routing
    https://www.juniper.net/us/en/training/jnbooks/day-one/inside-segment-routing/
  3. Day One Million promotion site where the Segment routing bundle & many others can be downloaded for free
    https://www.juniper.net/us/en/dm/day-one-million/

Blog Series by Ron Bonica

This series of blogs by Juniper Distinguished Engineer Ron Bonica goes over the details of how Junos implements Segment Routing.
link to check on Ron’s newest blogs:
https://forums.juniper.net/t5/forums/recentpostspage/post-type/message/category-id/Blogs/user-id/178052

Ron was also a guest on a sponsored episode on the Packet Pushers podcast.
https://packetpushers.net/podcast/heavy-networking-477-segment-routing-boot-camp-with-juniper-networks-sponsored/

  1. Segment Routing Overview
    https://forums.juniper.net/t5/Industry-Solutions-and-Trends/A-Segment-Routing-Renaissance/ba-p/462699
  2. Segment Routing: Policies, Paths and Segments
    https://forums.juniper.net/t5/Industry-Solutions-and-Trends/Segment-Routing-Policies-Paths-and-Segments/ba-p/463023
  3. Segment Routing With Multiprotocol Label Switching (MPLS)
    https://forums.juniper.net/t5/Industry-Solutions-and-Trends/Segment-Routing-SR-With-Multiprotocol-Label-Switching-MPLS/ba-p/463206
  4. Segment Routing Traffic Engineering:
    part 1: https://forums.juniper.net/t5/Industry-Solutions-and-Trends/Segment-Routing-SR-and-Traffic-Engineering-TE-Part-One/ba-p/463416
    part 2 : https://forums.juniper.net/t5/Industry-Solutions-and-Trends/Segment-Routing-SR-And-Traffic-Engineering-TE-Part-Two/ba-p/464018

Blog Series by Colby Barth

This series of blogs by Juniper Distinguished Engineer Colby Barth go over his perspective on the Junos implementation options.

  1. Bandwidth Optimization based Traffic Engineering using RSVP-TE & Segment Routing
    https://forums.juniper.net/t5/Routing/Bandwidth-Optimization-based-Traffic-Engineering-using-RSVP-TE/ta-p/410097
  2. MPLS Based SPF & TE Solutions: LDP, RSVP-TE & Segment Routing (SR)
    https://forums.juniper.net/t5/Routing/MPLS-Based-SPF-amp-TE-Solutions-LDP-RSVP-TE-amp-Segment-Routing/ta-p/445271
  3. LSP, RSVP-TE & Segment Routing (SR)
    https://forums.juniper.net/t5/Routing/Service-Mapping-in-MPLS-Networks-LSP-RSVP-TE-amp-Segment-Routing/ta-p/458537

Northstar Controller Support

This post by Juniper Senior Director of Product Management Sachin Natu focuses on how the Juniper Northstar solution implements controls for Segment routing.

  1. Traffic Engineering Segment Routed Networks with NorthStar Controller
    https://forums.juniper.net/t5/Industry-Solutions-and-Trends/Traffic-Engineering-Segment-Routed-Networks-with-NorthStar/ba-p/459613

Juniper is also actively part of the IETF standards process for SRv6 which outlines the ipv6 version of segment routing.
https://forums.juniper.net/t5/Routing/SRv6-Segment-Routing-Headers-Why-We-Want-Them/ta-p/461964

Originally published 10/6/2019