Using BGP, PCE-P and BMP with OpenDaylight: a deep dive
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A session in the DevNet Zone at Cisco Live, Berlin. In this presentation you will be shown examples of various real-world applications for using BGP, PCE-P and BMP with the Cisco Open SDN Controller and with OpenDaylight. The apps, and postman collections used to test the APIs, will be demoed in real time and also provided to participants to take away with them.
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Using BGP, PCE-P and BMP with OpenDaylight: a deep dive
- 2. OpenDaylight BGP/PCEP Giles Heron Cisco Systems
- 3. Agenda • Overview • BGP-LS/PCE-P • Learning Internet Routes • Advertising BGP routes • Flowspec • BMP
- 4. Overview
- 5. BGP/PCEP Overview OSPF OSPF BGP Core Edge Route Reflector Core Edge Route Reflector EdgeEdge BGP Link-State, IPv4, IPv6 and Flowspec routes MPLS LSPs via PCEP Edge BGP PCE-P OSPF OSPF PCE-P OSPF BGP OSPF BGP OSPF OSPF OSPF BGP App PCE-P RESTCONF BGP Topology
- 6. • LinkState Routes: intra-domain routes • From ISIS or OSPF and advertised via BGP-LS • Used to create linkstate topology • IPv4/IPv6 Routes: routes across domains • “Internet routes” • Can both learn routes and advertise them • FlowSpec Routes: packet filters • Like OpenFlow rules but can leverage BGP RR infrastructure • Actions encoded as BGP communities BGP Routes in ODL
- 7. Routes – the BGP RIB (or RIBs!)
- 8. • LinkState • IPv4 • IPv6 • PCE-P Topologies BGP RR BGP BGP OSPF OSPF OSPFOSPF OSPF OSPF BGP-LS
- 9. 1. Modify 41-bgp-example.xml 2. Use RESTCONF • http://localhost:8181/restconf/config/network-topology:network- topology/topology/topology-netconf/node/controller-config/yang- ext:mount/config:modules Steps: 1. (optionally) modify port to listen on (if 179 then need to run as root!) 2. Configure RIB 3. Configure Peers Configuring BGP
- 10. BGP-LS/PCE-P
- 11. BGP-LS AND PCE-P Harvest Network Intelligence BGP-LS Program for Optimised Experience PCE-P
- 12. BGP-LS Topology Exporter Controller MD-SAL BGP-LS RESTCONF /operational BGP-RIB /operational Topology BGP-LS Topology Exporter MD-SAL Set MD-SAL Notification MD-SAL Set MD-SAL Get BGP PDU Application (Topology Consumer)
- 13. Network: OSPF or IS-IS (IGP) Routes: distributed from IGP into BGP-LS RIB: Learned from BGP-LS speaker Topology: Lists of nodes (routers) and links RESTCONF URL: http://localhost:8181/ restconf/operational/ network-topology:network-topology/topology/ example-linkstate-topology BGP-LS Topology OSPF OSPF OSPFOSPF OSPF OSPF BGP-LS App BGP-LS Topo Export RESTCONF
- 14. • List of all PCCs (Path Computation Clients) • For each PCC, list of LSPs for which it is the head-end device. • Topology: Created by PCE-P plugin RESTCONF URL: http://localhost:8181/ restconf/operational/ network-topology:network-topology/ topology/pcep-topology PCE-P Topology MPLS MPLS MPLSMPLS MPLS MPLS BGP-LS PCE-P PCE-P PCE-P App PCE-P RESTCONF Node LSPs x ..,..,.. y ..,..,.. z ..,..,.. LSPs
- 15. • PCE creates MPLS-TE Label Switched Paths on PCC • Can modify LSP after setup or delete LSP PCE-P LSPs (dynamic) RESTCONF URL: http://localhost:8181/ restconf/operations/ network-topology:network-topology/ topology/pcep-topology:add-lsp (update-lsp / remove-lsp) MPLS MPLS MPLSMPLS MPLS MPLS BGP-LS PCE-P PCE-P PCE-P App PCE-P RESTCONF LSPs Node LSPs x ..,..,.. y ..,..,.. z ..,..,..
- 16. • PCC delegates locally configured MPLS-TE LSP to PCE for path selection: • Use update-lsp RPC to set path PCE-P LSPs (delegated) interface tunnel-te1 ipv4 unnumbered Loopback0 signalled-name foo ! destination 192.168.100.4 pce delegation MPLS MPLS MPLSMPLS MPLS MPLS BGP-LS PCE-P PCE-P PCE-P App PCE-P RESTCONF LSPs Node LSPs x ..,..,.. y ..,..,.. z ..,..,..
- 19. Network: BGP sessions between ASes Routes: IPv4 unicast BGP routes RIB: Learned from Route Reflector Topology: List of BGP next-hops (and prefixes per next-hop) RESTCONF URL: http://localhost:8181/ restconf/operational/ network-topology:network-topology/topology/ example-ipv4-topology IPv4 (BGP) Topology BGP RR BGP BGP App BGP Topo Bldr RESTCONF
- 21. • IPv4/IPv6 Routes: inter-domain routes • FlowSpec Routes: packet filters • App RIB is config (main RIB is operational) • App Peer “peers” with ODL’s main RIB Advertising BGP Routes (Application Peer) OSPF OSPF OSPFOSPF OSPF BGP OSPF BGP OSPF App BGP RESTCONF App RIBBGP RIB
- 22. RFC5575 - Similar to OpenFlow but uses BGP to distribute match/action rules Setting “Flows” (FlowSpec) Matches: • Source / Destination IP prefix • IP Protocol • Source / Destination TCP/UDP port • ICMP Type / Code • TCP Flags • Packet Length • DSCP Field • Fragment (DF, IsF, FF, LF) Actions: • Rate limit • Traffic sampling • Redirection • Traffic marking (DSCP) • And more... (optional)
- 23. Advertising BGP Routes Demo 23
- 25. • draft-ietf-grow-bmp-11 • Enables access to peer’s adj-rib-in and effective-rib-in • Means you get a shedload of prefixes! BMP (BGP Monitoring Protocol) BGP RR BGP BGP App BMP RESTCONF BMP
- 26. Demo - BGP Monitoring Protocol 26
- 27. Thank You