1. Applications of MPLS in GEANT Agnès Pouélé (agnes.pouele@dante.org.uk) Applications of MPLS in GÉANT MPLS WORLD CONGRESS 2002 Paris 7th February 2002 Agnes Pouele, Network Engineer DANTE 1

2. Applications of MPLS in GEANT Agnès Pouélé (agnes.pouele@dante.org.uk) Agenda Overview of GÉANT GÉANT Services GÉANT and Traffic Engineering GÉANT TE and OSPF Metric Replacement of TEN-155 MBS Service The TEN-155 MBS Service GÉANT Premium IP Service Alternative solutions with MPLS Enforcement of the Premium IP Service with MPLS TE The Virtual Lab Service Conclusion 2

3. Applications of MPLS in GEANT Agnès Pouélé (agnes.pouele@dante.org.uk) Overview of GÉANT DANTE –DANTE plans, builds and manages advanced network services for the European R&E community. GÉANT –GÉANT is a 10 Gbps Pan-European Network, it supports the development activities of the European National Research & Education Networks (NRENs) –GÉANT has been launched in December 2001 and is the successor of TEN-155*. 3

4. Applications of MPLS in GEANT Agnès Pouélé (agnes.pouele@dante.org.uk) GÉANT Services GÉANT Standard IP Service IP traffic from NREN to NREN (About 30 countries) IP traffic from NREN to Research Peerings (Abilene, Canarie, ESnet, NII..) Multicast Service Multicast is enabled for all the customers and Research Peerings Replacement of the Managed Bandwidth Service Premium IP Service (End to End Service for upper bounded Delay, upper bounded IPDV, negligible loss). Layers 2 VPN Upcoming of New Services Security and Dos attack detection IPv6 (Pan-European IPv6 test pilot network) 4

5. Applications of MPLS in GEANT Agnès Pouélé (agnes.pouele@dante.org.uk) 5

6. GÉANT Services 6 GÉANT Standard IP Service IP traffic from NREN to NREN (About 30 countries) IP traffic from NREN to Research Peerings (Abilene, Canarie, ESnet, NII..) Multicast Service Multicast is enabled for all the customers and Research Peerings Replacement of the Managed Bandwidth Service Premium IP Service (End to End Service for upper bounded Delay, upper bounded IPDV, negligible loss). Layers 2 VPN Upcoming Security and Dos attack detection IPv6 (Pan-European IPv6 test pilot network)

7. Applications of MPLS in GEANT Agnès Pouélé (agnes.pouele@dante.org.uk) GÉANT and Traffic Engineering GÉANT is currently an over-provisioned backbone. It doesn’t need MPLS-TE for splitting the traffic load among the trunks at its beginning. We are using OSPF metrics to influence the path taken by the IP traffic from each entrance to each exit point. –The use of OSPF metrics is quite simple but has some limitations in terms of scalability and TE 7

8. Applications of MPLS in GEANT Agnès Pouélé (agnes.pouele@dante.org.uk) GÉANT TE: OSPF Metric STM64 circuits STM16 circuits STM4 circuits STM1 circuits

9. Applications of MPLS in GEANT Agnès Pouélé (agnes.pouele@dante.org.uk) Replacement of TEN-155 MBS Service TEN-155 was an IP network built on ATM STM1 trunks upgraded in year 2000 at 622 Mbps. The TEN-155 Managed Bandwidth service provided International test-bed with QoS. The platforms were built with ATM VPs or PVCs with different classes of service (UBR, CBR). The test-beds were extended in each NREN backbone with the extension of the virtual connections 9

10. Applications of MPLS in GEANT Agnès Pouélé (agnes.pouele@dante.org.uk) MBS service from TEN-155 UK DE NREN Janet DFN AS8933 TEN-155 backbone AS786 AS680 A B Regional Network Regional Network NL FR MBS service ATM connection across NRENs and TEN-155 10

11. Applications of MPLS in GEANT Agnès Pouélé (agnes.pouele@dante.org.uk) GÉANT Premium IP Service The Premium IP service is an end-to-end service (University to University) crossing multiple administrative domains The model is based on a combination of edge-to-edge services offered by each domain. This service which is currently being piloted in GÉANT has the aim to provide international Virtual leased line based on Diffserv. It is defined on the basis of the Diffserv Expedited Forwarding Per Hop behavior which is required to offer –Bandwidth, low loss, upper bounded delay and jitter 11

12. Applications of MPLS in GEANT Agnès Pouélé (agnes.pouele@dante.org.uk) Premium IP:Virtual Leased Line service UK DE NREN Janet DFN AS20965 GÉANT backbone AS786 AS680 A B Regional Network Regional Network SE FR Premium IP packets are tagged with DSCP code =46 Rate Limitation is applied per aggregate on the NREN’s access, based on the total demanded bandwidth towards the destination. Admission Control is made manually based on the Sum of bandwidth already booked on the destination access. Rate limitation is applied on the NREN access  streams < 10 % of the BW access 12

13. Applications of MPLS in GEANT Agnès Pouélé (agnes.pouele@dante.org.uk) Alternative solution with MPLS GÉANT Premium IP service and MPLS TE MPLS TE can enforce this service by providing the best TE path across the network. –Lowest Delay independently of OSPF metric –Low loss with the use of Backup LSPs The LSPs can carry the aggregate Premium IP traffic and can be provisioned on demand –We don’t necessarily need to establish a full mesh. It depends on the number of participants The bandwidth of the LSPs reflects the total amount of booking of Premium IP from one NREN to another one. 13

14. Applications of MPLS in GEANT Agnès Pouélé (agnes.pouele@dante.org.uk) UK DE NREN Janet DFN AS20965 GÉANT backbone AS786 AS680 A B Regional Network Regional Network SE FR Rate limitation is applied on the NREN access  streams < 10 % of the BW access LSP FR-UK LSP DE-UK LSP UK-SE Alternative solution with MPLS GÉANT Premium IP and MPLS TE 14

15. Applications of MPLS in GEANT Agnès Pouélé (agnes.pouele@dante.org.uk) Forwarding of Premium IP “only” into the LSPs. –“CoS and destination” Based Forwarding Admission Control –On the core –Automatically done by RSVP-TE. –This Admission Control will permit to control the booking of Premium IP per link in the core and avoid overload in the case of re-routing. –On the Access –Still Manual but can be automated by monitoring the  of tunnel BW landing on each exit point Alternative solution with MPLS GÉANT Premium IP and MPLS TE 15

16. Applications of MPLS in GEANT Agnès Pouélé (agnes.pouele@dante.org.uk) Alternative Solution with MPLS The Virtual Lab Service Definition –The customers of MBS were using this service for the guaranteed BW and for the ability to have a Layer 3 network independent of the production traffic on TEN-155. The models discussed previously can’t provide isolation. –Thus a second service is under study for the provisioning of VPNs. –This service is called the Virtual Lab Service. 16

17. Applications of MPLS in GEANT Agnès Pouélé (agnes.pouele@dante.org.uk) The Virtual Lab Service allows the construction of international test-beds. –The service itself will be limited, in the beginning, to the core backbone. This service is based on point-to-point connections of layer 2 encapsulated into MPLS. –Proprietary Encapsulation –Draft-Kompella-ppvpn-l2vpn-01.txt The Virtual Lab Service Overview 17

18. Applications of MPLS in GEANT Agnès Pouélé (agnes.pouele@dante.org.uk) On the core side the virtual connection will be carried out by MPLS TE On the access side two types of access are defined –Shared access IP traffic and Virtual lab traffic are on the same physical link separated at layer 2 by virtual channel –POS STM16 FR-DLCI –ATM PVCs –Dedicated access Any layer 2 The Virtual Lab Service Overview 18

19. Applications of MPLS in GEANT Agnès Pouélé (agnes.pouele@dante.org.uk) LSPs Shared media access (up to STM16 POS) DLCI Production traffic access Dedicated access STMxx to STM16 POS Encapsulation Layer2 MPLS NREN’s access router GÉANT’s router In the core MPLS traffic IPV4 traffic DLCI Virtual Lab access NREN B NREN A NREN C GÉANT backbone Dedicated access (up to STM16 POS) NREN’s test router The Virtual Lab Service Example of Virtual platform 19

20. Applications of MPLS in GEANT Agnès Pouélé (agnes.pouele@dante.org.uk) The Virtual Lab Service Different Options Different options for the Virtual lab –With QoS Queuing of MPLS packets with Experimental CoS bits marked Use of WRR in the core (For now not needed) Use of Rate limitation on the access –With Backup LSPs To protect sensitive application (low loss) Monitoring via SNMP per virtual lab. –Monitoring of each trunk (LSP) per VL BW usage.. 20

21. Applications of MPLS in GEANT Agnès Pouélé (agnes.pouele@dante.org.uk) Regional Network Regional Network Regional Network The Virtual Lab Service: Inter-domain extension DLCI Production traffic access NREN’s PE GÉANT’s PE DLCI Virtual Lab access NREN B NREN ANREN C GÉANT backbone ATM access MPLS VPN layer 2 LSPs PE1 PE2 PE4 PE/CE PE Delivery to the regional network of a DLCIs GRE Tunnels&LSP or UTI PE3 Delivery to the regional network of ATM PVCs Interworking area ATM Backbone ATM PVCs Shared media access (up to STM16 POS) 21 Interworking area

22. Applications of MPLS in GEANT Agnès Pouélé (agnes.pouele@dante.org.uk) The Virtual Lab Service next step Definition of the service –Still under discussion Limitations –Interoperability –Number of Virtual platform which can be supported ? Extension to NREN’s core backbone –Obvious for the NREN’s which are still in ATM –To be investigated for pure IP backbone 22

23. Applications of MPLS in GEANT Agnès Pouélé (agnes.pouele@dante.org.uk) Conclusion GÉANT and MPLS-TE for IP production traffic –Altought GÉANT looks over provisioned in the medium term we expect an exponential growth in the usage of BW. Replacement of the MBS service –MPLS Layer-2 VPNs & Traffic Engineering associated with Diffserv are keys to the deployment of the advanced services needed by the Research Community. 23

24. Applications of MPLS in GEANT Agnès Pouélé (agnes.pouele@dante.org.uk) Thanks Questions ? 24