MPLS over Higher Speed Ethernet (HSE) and Optical Transport Network (OTN) Guang Zhang Ixia Product Manager

Transcription

1 MPLS over Higher Speed Ethernet (HSE) and Optical Transport Network (OTN) Guang Zhang Ixia Product Manager 1

2 Agenda Introduction to Ixia HSE and OTN technology trends IP/MPLS and market trends MPLS-TP common test topologies Summary Page 2

3 Who is Ixia Leader in wired, wireless, and Wi-Fi testing We partner with our customers to test, build, and maintain resilient, converged IP networks Global company Publicly traded: XXIA Operating in 30 countries 13 years of growth 13 years of profitability / no debt 180,000+ test ports shipped 70 U.S. and foreign patents 1,100 employees $277 Million USD Revenue in FY 2010 Page 3

4 HSE and OTN Technology Trends Rapid bandwidth growth evident in core networks HSE addresses bandwidth with 40/100GE interfaces HSE doesn t address long haul requirements OTN designed for packet transport over long haul Ideal for interconnect at Ethernet, IP, or MPLS layers High scale L2/L3 MPLS VPN topologies are being deployed over OTN transport OTN initially was a separate shelf, but is becoming integrated with core routers OTN integrates with higher layers and provides High Availability at packet layer Routing and traffic engineering in OTN networks can integrate with GMPLS, MPLS/MPLS-TP, and layer 2/3 Page 4

5 HSE/OTN Packet Transport Options Ethernet PCS maps directly to ODU-3 and ODU-4 100GE directly mapped to ODU-4 (bit mapping of Ethernet) 40GE transcoded to ODU-3 (also bit mapping, but change to more efficient line coding to fit ODU-3 rate) 100GE Direct Mapped to GMP ODU4 OTU4 + GFEC 40GE Transcoded ODU3 OTU3 + GFEC ODU Flex is an intelligent way to provide bandwidth between nodes Flexible allocation of bandwidth, increments of 1.25Gbps. Provision links at required bandwidth, e.g.: 55Gbps Use GFP-F to map packets at layer 2 or layer 3 Allows oversubscription of transport layer bandwidth and greater efficiency. 5

6 HSE interfaces good for routing, but not for long haul HSE/OTN Router Trends Dedicated OTN transport shelf used to adapt HSE to OTN transport Future Core routers with fully integrated OTN interfaces reduce space, power, and management Future GMPLS for OTN path routing provides multi-layer network integration 6

7 HSE/OTN Testing PRBS or simple packet testing is insufficient or inappropriate All the common Ethernet/IP/MPLS test scenarios apply to routers and intelligent transport devices with integrated OTN Scaled IP/MPLS routing, L3 VPN s, Multicast VPN s, MPLS-TP, GMPLS 7

8 MPLS evolved from IP The most successful WAN technology in the core network IP/MPLS and Market Trends VPN services (PW, VPLS, VRF, 6VPE and other variants) dominate MPLS Traffic engineering and Fast ReRoute enable link and node protection Unicast and multicast over the same infrastructure MPLS is adding transport features

9 MPLS-TP: Make MPLS Transport-Like Solution based on existing pseudo-wire and LSP constructs OAM function responsible for monitoring the LSP/PW Can be statically configured or dynamically signalled Protection to the granularity of individual LSP or PW Page 9

10 Testing MPLS-TP: DUT as Ingress Egress PE: 1. Terminates MPLS-TP OAM 2. Terminates BFD or Y Terminates Traffic 4. Simulates CC/CV error and trigger DUT to switchover 5. Simulates link failure and trigger DUT to switchover Traffic Source Working Ingress PE Protecting Key use cases to test: 1. MPLS-TP OAM interoperability 2. BFD and Y.1731 Interoperability 3. PSC interoperability 4. Validate APS commands and performance 5. Switchover time measurement based on traffic loss 6. Sub 50ms switchover time in various protection mode Exercise alarms on OTN interfaces to test protection at MPLS-TP layer

11 Testing MPLS-TP: DUT as Egress Ingress PE: 1) Initiates switchover command 2) Initiates MPLS-TP OAM 3) Initiates BFD or Y ) Generates traffic 5) Switchover to protect path on failure Ingress PE Working Protecting DUT Key use cases to test: 1. MPLS-TP OAM interoperability 2. BFD or Y.1731 interoperability 3. PSC interoperability 4. APS Commands 5. Sub 50ms switchover time measurement based on traffic loss with various protection mode Traffic Sink

12 Testing with Scalability Ingress PEs Working Egress PEs DUT Protecting Key testing use cases: 1. Simulate large numbers of working and protecting LSP/PW 2. Working/Protecting on the same port or different ports 3. Run BFD or Y.1731 on all working and protecting LSP/PWs at various intervals, including 3.33ms 4. Enable advance OAM features such as performance monitoring (LM, DM) and on-demand CV (LSP Ping and Traceroute) 5. End-to-end traffic with different rate and frame sizes 6. Validate maximum PW/LSP capacity

13 Summary HSE 40/100GE is a common interface on core routers OTN Enables HSE transport long haul Routers and MSPPs are integrating OTN with packet switching and routing Packet transport devices including OTN and MPLS-TP OTN adds yet another dimension to validating scalability and robustness of IP/MPLS networks. Page 13