Ethernet over MPLS tests Marcin Garstka, Poznań Supercomputing and Networking Centre Copenhagen, 20 November 2012 The research leading to these results has received funding from the European Community s Seventh Framework Programme (FP7/2007-2013) under grant agreement no 238875 (GÉANT)
Agenda Summary of the technology Technology testing: OAM Protection and Restoration Multidomain Multicast EoMPLS services over MPLS-TP 2
Ethernet over MPLS Layer 2 transport over an IP/MPLS network Multiple Layer 2 technologies, Ethernet dominating nowedays Point-2-Point (VPWS, Layer 2 VPN) and Multipoint-2-Multipoint (VPLS) services Layer 2 multicast using point-to-multipoint LSPs as an emerging service 3
Data Plane IP/MPLS network Pseudowire transport RSVP or LDP to establish Label Switched Paths RSVP has traffic engineering functions and Fast Reroute Layer 2 functions (e.g. MAC learning) for VPLS only on edge routers Backbone routers not aware of the services 4
Control Plane 2 protocols: BGP (with neighbour autodiscovery) LDP (simpler but without autodiscovery) 5
Tests on Juniper routers The purpose of the tests was to assess the status of implementation of selected VPWS and VPLS features on commercially available routers. The selected features are either new or interesting for research and education networks. The ultimate goal of the tests was to verify if the Ethernet over MPLS technology fulfills selected requirements for Carrier Class Transport Network Technologies identified in [GN3-09-224_DJ1.1.1]. Tests executed on Juniper Networks routers. Juniper MX-series routers (MX-240, MX-480 and MX-960), software 11.1R2.3. 6
Ethernet OAM tests 7
802.1ag Connectivity Fault Management and MPLS trace test Continuity Check Protocol Linktrace Protocol MPLS Trace No MIPs or MEPs possible on transit routers Continuity Check Protocol was able to indicate loss and restoration of connectivity Linktrace was able to trace the connection but not able to locate the outage MPLS Trace was able to trace the path but not able to locate the outage MAC Ping also tested with positive results 8
Y.1731 Ethernet frame delay measurement test One-way and Twoway frame delay and frame delay variation measured in the Customer Domain Not supported in the Provider Domain on the routers used for tests 9
Y.1731 ETH-AIS test Not supported by Juniper 10
Protection and Restoration tests 11
MPLS Fast Reroute in VPWS and VPLS test RSVP with Fast Reroute (Link Protection) Without Fast Reroute With Fast Reroute Recovery time [ms] Recovery time [ms] BGP-signaled VPWS 190 21 LDP-signaled VPWS 187 22 BGP-signaled VPLS 334 25 LDP-signaled VPLS 346 22 12
BFD and MPLS Fast Reroute test BFD for ISIS (minimum interval 10, multiplier 2) RSVP with Fast Reroute (Link Protection) Without BFD With BFD Recovery time Recovery time BGP-signaled VPWS 21 seconds 72 ms LDP-signaled VPWS 26 seconds 72 ms BGP-signaled VPLS 20 seconds 76 ms LDP-signaled VPLS 25 seconds 70 ms In bigger networks such short times will not be possible. 13
Multi-domain tests 14
Multi-domain 802.1ag and MPLS Trace test Labelled unicast Inter-AS option C ebgp between Route Reflectors (not ASBRs) for VPN routes redistribution Cointinuity Check Protocol and Linktrace protocol properly indicated loss of connectivity in the Provider Domain The protocols cannot be used in the Operator Domain (single AS) MPLS trace not supported for inter-as option C 15
Multi-domain restoration test The LSP was successfully rerouted to link P2-P3 when link P1-PE2 was disconnected. The time needed for service restoration was 31 ms. 16
Multicast in VPLS tests 17
Multicast in VPLS tests Efficient multicast replication with P-to-MP LSPs The same router can serve as transit and access Service restoration tested when one of the links was disconnected 18
VPWS and VPLS over MPLS/TP tests 19
Multicast in VPLS tests EoMPLS services demonstrated over LSPs provisioned by ASPEN Network Manager 20
Summary Ethernet over MPLS proved to be a technology carriers and NRENs should consider for their networks OAM Fast recovery Multidomain operations L2 multicast 21
Thank you very much Questions? 22