Carrier Ethernet OAM

1. Carrier Ethernet OAM

2. Speakers Moderator/speaker Fred Ellefson, VP Etherjack Alliances, ADVA Optical Networking fellefson@ADVAoptical.com Speakers Craig Easley, Director of Marketing,Actelis CEasley@actelis.com Matt Squire, CTO, Hatteras msquire@hatterasnetworks.com

3. Agenda Large scale deployment of profitable Ethernet services demands automation and mechanization Emerging OAM standards provide a foundation for streamlining Ethernet operations New customer premise demarcation technology is necessary to take advantage of the emerging OAM standards

4. Ethernet Services Forecasts

5. Ethernet Market Evolution First, let�s make sure we understand what we�re talking about when we say �Small and Medium Enterprises�. This chart shows that there are nearly 8 million businesses, or �enterprises� in the US. This chart draws the line between �medium� and �large� enterprises at 1000 employees. I�ve seen others that make the cutoff at 500 employees. We�ll let you decide where to draw the line. But, whether its at 1000 employees or 500, one thing is clear�the vast majority of businesses in the US, more than 90%, can be called SMEs. These days, almost all SMEs have at least one computer and most have more than just one. Almost all of these computers are connected together �local area networks�, and the language of local area networks is Ethernet. So, SMEs already know about Ethernet and are open to the idea of Ethernet connectivity and Ethernet-based services when the opportunities present themselves. Large enterprises have large IT departments to figure this stuff out. But, SMEs are looking for packaged solutions that are plug-and-play, as quick and easy as an RJ45 connector, and that go right to work solving their business problems. This is a big challenge and a big opportunity for service providers.. First, let�s make sure we understand what we�re talking about when we say �Small and Medium Enterprises�. This chart shows that there are nearly 8 million businesses, or �enterprises� in the US. This chart draws the line between �medium� and �large� enterprises at 1000 employees. I�ve seen others that make the cutoff at 500 employees. We�ll let you decide where to draw the line. But, whether its at 1000 employees or 500, one thing is clear�the vast majority of businesses in the US, more than 90%, can be called SMEs. These days, almost all SMEs have at least one computer and most have more than just one. Almost all of these computers are connected together �local area networks�, and the language of local area networks is Ethernet. So, SMEs already know about Ethernet and are open to the idea of Ethernet connectivity and Ethernet-based services when the opportunities present themselves. Large enterprises have large IT departments to figure this stuff out. But, SMEs are looking for packaged solutions that are plug-and-play, as quick and easy as an RJ45 connector, and that go right to work solving their business problems. This is a big challenge and a big opportunity for service providers..

6. Agenda Large scale deployment of profitable Ethernet services demands automation and mechanization Emerging OAM standards provide a foundation for streamlining Ethernet operations New customer premise demarcation technology is necessary to take advantage of the emerging OAM standards

7. Ethernet OAM Layers

8. Ethernet OAM Standards Activities

9. Ethernet OAM Standards MRV 1m I think it�s worth pointing out some of the specific OAM functions that 802.3ah does and does not support. The table on the screen breaks these down into several key categories with specific examples listed within each. The thing to note, here, is that even where 802.3ah may not support a particular OAM function, an Ethernet Access equipment vendor may implement its own extension to the standard and include support for that function without compromising interoperability. It is this flexibility of the 802.3ah standard that makes it so powerful. Now we won�t take the time to discuss each item listed in the chart. Must of these I�m sure you are already familiar with. However, if there is one or two that you would like to go over in more detail, just send Andy a message via the chat window and we�ll try to cover it during the Q&A session at the end of this presentation. MRV 1m I think it�s worth pointing out some of the specific OAM functions that 802.3ah does and does not support. The table on the screen breaks these down into several key categories with specific examples listed within each. The thing to note, here, is that even where 802.3ah may not support a particular OAM function, an Ethernet Access equipment vendor may implement its own extension to the standard and include support for that function without compromising interoperability. It is this flexibility of the 802.3ah standard that makes it so powerful. Now we won�t take the time to discuss each item listed in the chart. Must of these I�m sure you are already familiar with. However, if there is one or two that you would like to go over in more detail, just send Andy a message via the chat window and we�ll try to cover it during the Q&A session at the end of this presentation.

10. IEEE 802.3ah Ethernet in First Mile EFM standard completed in mid 2004 First Ethernet OAM standard to be completed Focused on point to point Ethernet link OAM Does not propagate beyond the link Discovery Remote failure indication Dying gasp, link fault & critical event Remote loopback Performance monitoring and threshold crossing alarms Ethernet OAM shares BW with data payload Utilizes a �slow� protocol limited to 10 packets per second OAMPDUs identified by MAC address and Ethernet Length/Type/subtype field Uses a protocol sub layer between physical and Data link layers

11. IEEE 802.1ag Connectivity Fault Management Work in process Focused on OAM of multi-point applications utilizing Ethernet bridges Continuity checks Loopbacks Traceroute AIS

12. ITU EthOAM Under development in study group 13 Discovery Continuity check (keep alive) Loopback (non-intrusive and intrusive) Defect detection/localization Performance verification AIS/RDI Traceroute Performance management Frame loss Frame delay Frame delay variation Others (errored frame seconds, service status (up/down), frame throughput, etc.)

13. MEF Carrier Ethernet Activities

14. Agenda Large scale deployment of profitable Ethernet services demands automation and mechanization Emerging OAM standards provide a foundation for streamlining Ethernet operations New customer premise demarcation technology is necessary to take advantage of the emerging OAM standards

15. What is Ethernet Demarcation? Ethernet Demarcation Necessary at carrier to customer interface (UNI) Provides separation between carrier WAN and enterprise LAN Enables testing and monitoring of both LAN and WAN IEEE 802.1aj standard started Mar �05

16. Ethernet Demarcation Two key functions for Ethernet demarcation Ethernet NID (Network Interface Device) or Network Termination Equipment (NTE) Link/Service layer Ethernet OAM � 802.3ah & 802.1ag Ethernet Service UNI (User Network Interface) Service layer policing and definition � MEF/ITU Functions may be in standalone devices or integrated into first mile transport devices or CPE equipment For providing intelligent Ethernet services, two functions are required at the service demarcation point: and Ethernet Network Interface Device (NID) to provide remote monitoring and test and a service UNI to provide service policing and definition. I�m going to talk about each one of these functions by themselves, starting with the NIDFor providing intelligent Ethernet services, two functions are required at the service demarcation point: and Ethernet Network Interface Device (NID) to provide remote monitoring and test and a service UNI to provide service policing and definition. I�m going to talk about each one of these functions by themselves, starting with the NID

17. User Network Interface (UNI) User Network Interface (UNI) function must be at customer/carrier demarcation point Especially if access link requires rate limiting for transport MEF based service definition (UNI) on port or Ethernet Virtual Circuit (EVC) basis CIR/EIR � Committed/Excess Information Rate CBS/EBS � Committed/Excess Burst Size Traffic classification/priority based on TOS/DSCP/802.1P/802.1Q/etc. Low latency handling of VoIP/video services Ethernet Virtual Circuit (EVC) or VLAN support 802.1Q & Q-in-Q - Add, remove, swap and stacking of VLAN tags The user network interface is required in the demarcation device, especially if Ethernet is transported over a non-Ethernet transport system such as SONET, DS1/DS3, copper etc. All these transport technologies require rate limiting, and as soon as you are performing rate limiting, you must have the service intelligence to ensure that the low priority traffic is dropped or delayed. If the wrong traffic is dropped at the customer premise, there is no way to fix it at the provider edge switch or any other upstream device. The metro Ethernet forum (MEF) provides a service definition on a port or EVC basis, and uses CIR/EIR/CBS/EBS parameters to define the service Traffic can be classified into EVCs using type of service (TOS), differentiated services code point (DSCP), VLANs and VLAN priorities (802.1P and 802.1Q). This ensures that VoIP or video services will receive the proper quality of service necessary for these latency sensitive applications. VLAN tag stacking is also a common requirement at the UNI interface to ensure that carrier VLANs don�t interfere with Enterprise use of VLANs. The user network interface is required in the demarcation device, especially if Ethernet is transported over a non-Ethernet transport system such as SONET, DS1/DS3, copper etc. All these transport technologies require rate limiting, and as soon as you are performing rate limiting, you must have the service intelligence to ensure that the low priority traffic is dropped or delayed. If the wrong traffic is dropped at the customer premise, there is no way to fix it at the provider edge switch or any other upstream device. The metro Ethernet forum (MEF) provides a service definition on a port or EVC basis, and uses CIR/EIR/CBS/EBS parameters to define the service Traffic can be classified into EVCs using type of service (TOS), differentiated services code point (DSCP), VLANs and VLAN priorities (802.1P and 802.1Q). This ensures that VoIP or video services will receive the proper quality of service necessary for these latency sensitive applications. VLAN tag stacking is also a common requirement at the UNI interface to ensure that carrier VLANs don�t interfere with Enterprise use of VLANs.

18. Network Interface Device (NID or NTE) NID or NTE required at customer handoff for OAM Analogous to smartjack, CSU/DSU or NTE for frame relay Link OAM (802.3ah) is necessary but not sufficient Performance monitoring and threshold crossing alarms Remote failure indication - Dying gasp, link fault & critical event Remote loopback (Port) Services/Connectivity OAM (802.1ag, ITU, MEF, etc.) Continuity verification Service level loopback AIS/RDI or fault propagation Test head to generate test suites (RFC-2544) Cable integrity test for customer premise For providing intelligent Ethernet services, two functions are required at the service demarcation point: and Ethernet Network Interface Device (NID) to provide remote monitoring and test and a service UNI to provide service policing and definition. I�m going to talk about each one of these functions by themselves, starting with the NIDFor providing intelligent Ethernet services, two functions are required at the service demarcation point: and Ethernet Network Interface Device (NID) to provide remote monitoring and test and a service UNI to provide service policing and definition. I�m going to talk about each one of these functions by themselves, starting with the NID

19. Discovery Allows provider edge switch to determine the OAM capability of the remote demarcation device 802.3 ah OAM support is �optional� If both ends support OAM, then the two ends exchange state and configuration Mode - active vs passive OAMPDU size Identity Loopback support

20. Performance Monitoring for SLA Conformance Collected on port and EVC (VLAN) basis From both sides of demarcation point RMON Etherstats aren�t enough, extensions for: Discarded packets (out of SLA), average bit rate parameters, ingress vs. egress BW, etc. 15 minute/24hour collection intervals with history Threshold crossing alerts/notification Real-time view of service performance Reports for customer validation � monthly and web For providing intelligent Ethernet services, two functions are required at the service demarcation point: and Ethernet Network Interface Device (NID) to provide remote monitoring and test and a service UNI to provide service policing and definition. I�m going to talk about each one of these functions by themselves, starting with the NIDFor providing intelligent Ethernet services, two functions are required at the service demarcation point: and Ethernet Network Interface Device (NID) to provide remote monitoring and test and a service UNI to provide service policing and definition. I�m going to talk about each one of these functions by themselves, starting with the NID

21. Remote Failure � Link Fault/Critical Event

22. Remote Failure - Dying Gasp

23. Ethernet Port Loopback Port level loopback is defined in 802.3ah (EFM) and can be utilized with a test head (central in this example) to test a service. This is an intrusive test ideal for service turn-up or trouble shooting.Port level loopback is defined in 802.3ah (EFM) and can be utilized with a test head (central in this example) to test a service. This is an intrusive test ideal for service turn-up or trouble shooting.

24. Selective (Non-Intrusive) Loopback

25. Ethernet AIS/RDI Used to suppress downstream alarms and eliminate alarm storms from a single failure Commonly used in legacy services like SONET, TDM, frame relay, etc.

26. Fault Propagation

27. Ethernet Wholesale Application

28. Demarcation Device Integration 802.3ah standard supports demarcation integration into a customer owned router/switch or carrier owned transport device (ADM, modem or media converter) For providing intelligent Ethernet services, two functions are required at the service demarcation point: and Ethernet Network Interface Device (NID) to provide remote monitoring and test and a service UNI to provide service policing and definition. I�m going to talk about each one of these functions by themselves, starting with the NIDFor providing intelligent Ethernet services, two functions are required at the service demarcation point: and Ethernet Network Interface Device (NID) to provide remote monitoring and test and a service UNI to provide service policing and definition. I�m going to talk about each one of these functions by themselves, starting with the NID

29. Operational Expense Savings Study

30. Ethernet Demarcation Cost Savings Ethernet demarcation provides Ethernet tools which are comparable to traditional SDH/Frame Relay/Private line services Ensures Ethernet remains profitable over life time of service!

31. Summary Ethernet OAM specifications are being finalized to provide a layered structure similar to traditional carrier services These new standards will drive new OAM capability into the customer premise demarcation point that can reduce opex by 80% Low Ethernet capex costs shifts profitability focus to OPEX, and Ethernet OAM is key to managing Ethernet service OPEX costs