Segment routing in ISO-XR 5.2.2
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Segment Routing allows MPLS labels to be transported within deployed IGPs like OSPF and IS-IS, reducing MPLS complexity. It provides automated 50ms link and node protection for any topology or IGP metric. The goal is to allow applications to request permanent or time-specific SLAs, with the SDN controller expressing these in dynamic or explicit paths scaled by injecting paths in packets instead of network devices.
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Segment routing in ISO-XR 5.2.2
- 1. © 2013 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 1© 2013 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 1 Segment Routing Bertrand Duvivier Sr Product Marketing bduvivie@cisco.com
- 2. © 2013 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 2 Carrier Class 99.999+ Scalability Application Enabled Routing I need a circuit to got to host Use the RED path Host SDN controller • Simplicity and Usability • Carrier Class: 50ms protection • Scalability • IPv6 & MPLS IPv6 • Application driving the network
- 3. © 2013 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 3 Description: Segment Routing allows to transport MPLS labels witnin the deployed IGP (OSPF or ISIS) and tehrefore reduce MPLS complexity, no need to synchronize protocols, no need to do double monitoring or troubleshooting,… LDP ISIS OSPF ISIS SR OSPF SR RSVP-TE ISIS OSPF ISIS SR OSPF SR Dynamic path Explicit path
- 4. © 2013 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 4 Description: The goal is to provide automated 50ms link and node protection whatever topologies or IGP metric. And optimizing backup path as closed as post convergence optimized path C2 100 11 1 1 1 primary backup
- 5. © 2013 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 5 Description: The goal is to allow Applications (represented by flows) to ask for permanent or time specific SLA and for the SDN controller express this requirement into dynamic or explicit path. As the explicit path is injected in the packet and not in the network devices, Segment Routing allows to support to scale. I need a circuit to got to host Use the RED path Host SDN Controller
- 6. © 2013 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 6 - IS-IS IPV4 MPLS nodal segment -Allow to express dynamic path - IS-IS IPv4 Segment Routing chip in the nigth with LDP deployement - IS-IS IPv4 LFA and rLFA FRR XR 5.2.0
- 7. © 2013 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 7 - IS-IS MPLS Nodal and Adjacency segment - Allows to express dynamic and explicit path - IS-IS Segment Routing interworking with LDP - IS-IS IPv4/IPv6 Topology Independent Loop Free Alaternat Fast ReRoute - OSPFv2 Nodal segment XR 5.2.2
- 8. © 2013 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 8 ask-segment-routing@cisco.com http://www.segment-routing.net
Editor's Notes
- Bonjour, I’m Bertrand Duvivier, NOSTG product manager and I’m going to give you an update on BGP flowspec
- If we look at SP routing strategy, our goal is to provides solid networking foundation to enable all customers services. As part of our ongoing innovation we are focusing on Providing better usability and keeping IP networks simple. Carrier Class services with 50 ms protection Constantly improving on the scalability Enabling IPv6 and MPLS IPv6 And more recently better tight Applications with the network. You well see how Segment Routing will address all.
- Let’s analyse a first use-case: MPLS Segment Routing fundtion does transport all Labels requires to express dynamic path or explicit path within the IGP, ISIS or OSPF, and thus removing the need to run LDP and RSVP protocols, less protocols means less synchronization between them and simplification.
- Use case 2 Segment routing does provide automated and optimized Topology Independent Fast ReRoute mechanism and thus allow for 50ms protection.
- use-case 3: The idea is for an Application to ask the SDN controller for a path to reach a destination with specific SLA. And the SDN controller to provide Dynamic or Explicit path expressed in a list of labels. As the dynamic or explicit path is in the packet and not in any network devices, the solution scale extremely high.
- I ‘m happy to announce BGP flowspec support in XR 5.2.0 on ASR9K and CRS. The Cisco BGP flowspec implementation is complete and will support BGP flowspec based line as defined in RFC5575 IPv6 BGP flowspec IP Next Hop redirection option Does support IP and VPN address families Forwarding plane has been optimize to support large scale flowspec deployment Could be deployed as BGP flowspec, Controller, Route Reflection or client
- I ‘m happy to announce BGP flowspec support in XR 5.2.0 on ASR9K and CRS. The Cisco BGP flowspec implementation is complete and will support BGP flowspec based line as defined in RFC5575 IPv6 BGP flowspec IP Next Hop redirection option Does support IP and VPN address families Forwarding plane has been optimize to support large scale flowspec deployment Could be deployed as BGP flowspec, Controller, Route Reflection or client