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Connect. Communicate. Collaborate
VPNs in GÉANT2
Otto Kreiter, DANTE
UKERNA Networkshop 344th - 6th April 2006
Connect. Communicate. Collaborate
Agenda
1. Brief presentation of GÉANT2
2. IP/MPLS VPN services inherited from GÉANT
3. Optical VPNs in GÉANT2
Connect. Communicate. Collaborate
What is GÉANT2?
A European R&E Networking Model:
• 7th generation of pan-European research network infrastructure – continuation of a success story
• Project partners include 30 of Europe’s national research and education networks (NRENs), DANTE and TERENA
• Will connect 34 European countries and serve over 3500 research and education establishments across Europe
• Provides international connectivity to other world regions• Funded jointly by NRENs and European Commission• Project timescale September 2004 - August 2008
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GÉANT2 Topology
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GÉANT2 Objectives
• Provide a gigabit-speed infrastructure to support European research and education
• Deploy an international hybrid network: routed IP traffic combined with switched point-to-point circuits
• Implement end-to-end QoS provision
• Provide a research infrastructure for network technology developments
• Develop a wider range of network services– Performance monitoring– Security– Bandwidth on demand– Testbed facility– Mobility and roaming
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Services inherited from GÉANT
IP Services using Juniper routers.
– Native Best Effort IPv4– Native Best Effort IPv6– Native Multicast v4 – Native Multicast v6– QoS Services
• Premium IP - PIP• Less than Best Effort IP - LBE
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Services inherited from GÉANT
MPLS services– L2-VPNs
• Started with Juniper CCC, “migrated” to LDP signalled L2-circuits
• Multi-domain and multi-vendor L2-circuits in place. – Traffic engineered paths
• To enforce QoS• Part of multi-domain L2-VPNs
– Stitching
– Contiguous LSPs
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LSP Stitching
Pro: We are in control of the “transit” LSPCons: Done manually at the GÉANT/GÉANT2 border
– Not flexible– Error prone
Multi-domain LSPs - I
Manual stitching point
Needs to know internal structure of transit domain
A B
Connect. Communicate. CollaborateMulti-domain LSPs - II
Contiguous LSP
Pro: Easy to configure it
Cons: Hard to enforce any policy– TE across transit domain
– Bandwidth reservation across transit domain
– Possible solution nesting.
Needs to know internal structure of transit domain
A B
Traceroute AB
Connect. Communicate. CollaborateMulti-domain LSPs - III
LSP nesting
A B
Needs to know IN/OUT of transit domains
C
Bandwidth constraints
Pro: We are in control of the “transit” LSPsCons: Not known yet !
Connect. Communicate. CollaborateIP/MPLS services
• GÉANT2 will continue to provide the same IP/MPLS and L2-VPN services.
• Subsequently will look into possibilities to improve it• LSP nesting.
• Looking forward to deploy “new” services if they are required by the R&E community.
• L3-VPNs• VPLS• Point-to-Multipoint LSPs
Connect. Communicate. CollaborateOptical VPNs in GÉANT2
Requirements of BoD services:
• Deterministic bandwidth• Deterministic delay• Ethernet• Automated provisioning• Advanced reservation (?)
Solution “Optical” VPNs.
Connect. Communicate. CollaborateTechnological domains Connect. Communicate. Collaborate
IP/MPLS
SDH/EoSDH
Ethernet
Europe
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GÉANT2 technological domains Connect. Communicate. Collaborate
SDH10GE1GE
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GÉANT2 technological domains Connect. Communicate. Collaborate
SDH10GE1GE
Domain B
Domain A
VLANsGFP-FVCAT
VC-4 hand-over point
NMS
GFP-FVCAT
?
?
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GMPLS the solution for Optical-VPNs ? Connect. Communicate. Collaborate
e2e pathEthernet LSPSDH LSP
Domain B
Domain A
GMPLSGMPLS
GMPLS
Connect. Communicate. CollaborateGMPLS in GÉANT2
GÉANT2 OXC
Alcatel 1678MCC
GMPLS Interface Switching Capabilities:– TDM– Ethernet L2SC
GMPLS control plane available for the TDM region
Connect. Communicate. CollaborateWhat is missing…
GMPLS controlled Ethernet Label Switching
A single GMPLS control plane instance for multiple regions (TDM and Ethernet) Multi Region Network – Would be nice to have "triggered signalling" for lower
layers.
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They will form two separate service layers at the beginningThey may form a global TDM and packet (Ethernet/IP) traffic
engineering database in the future.
Where the GÉANT2 IP/MPLS network fits in this picture ?
NREN NREN
Connect. Communicate. CollaborateConclusion
GÉANT2 will continue to provide L2-VPN services in the IP/MPLS network.
New emerging inter-domain MPLS techniques to improve L2-VPN deployments.
GMPLS seems to be an answer for Optical-VPNs in GÉANT2 in support of BOD activities.