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Semelhante a Bgpcep odl summit 2015
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Bgpcep odl summit 2015
- 1. Using the OpenDaylight BGP Speaker Giles Heron, Cisco
- 2. • Overview • BGP-LS/PCE-P • IPv4 and IPv6 • Advertising BGP routes • Flowspec • BMP Agenda
- 3. Overview
- 4. 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
- 5. • 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
- 6. Routes – the BGP RIB (or RIBs!)
- 7. • LinkState • IPv4 • IPv6 • PCE-P Topologies BGP RR BGP BGP OSPF OSPF OSPFOSPF OSPF OSPF BGP-LS
- 8. 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
- 9. 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 Bldr RESTCONF
- 10. • 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
- 11. • 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 Node LSPs x ..,..,.. y ..,..,.. z ..,..,.. LSPs
- 12. • 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 path-option 1 dynamic pce pce delegation MPLS MPLS MPLSMPLS MPLS MPLS BGP-LS PCE-P PCE-P PCE-P App PCE-P RESTCONF Node LSPs x ..,..,.. y ..,..,.. z ..,..,.. LSPs
- 14. 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
- 15. • IPv4/IPv6 Routes: inter-domain routes • FlowSpec Routes: packet filters • APP RIB is config (main RIB is operational) • APP RIB is an iBGP peer of the main RIB • So need eBGP to real peers (for now!) Advertising BGP Routes (Application RIB) OSPF OSPF OSPFOSPF OSPF BGP OSPF BGP OSPF App BGP RESTCONF App RIBBGP RIB
- 17. 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)
- 18. • 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
- 19. Demo BMP
- 20. Thank you 20
Notas do Editor
- Credit to Ed Warnicke for some of these slides
- Credit to Ed Warnicke for some of these slides
- Credit to Ed Warnicke for some of these slides
- Credit to Ed Warnicke for some of these slides
- Credit to Ed Warnicke for some of these slides