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1 Deployment Considerations with Interconnecting Data Centers BRKDCT - 3060

2 Reference Sessions  This is a list of relevant DCI sessions - LTRDCT - 2008 Deploying Overlay Transport Virtualization Design and Deployment of Data Center BRKDCT - 2011 - using Advanced VPLS) - - VPLS (A Interconnects Overlay Transport Virtualization - 2049 - BRKDCT BRKCRS - 3045 - LISP - A Next Generation Networking Architecture Deployment Considerations 2781 for - - TECDCT Interconnecting Distributed Virtual Data Centers 3060 - BRKDCT Public © 2011 Cisco and/or its affiliates. All rights reserved. Cisco 2

3 Agenda DCI Business Drivers and Solutions Overview   LAN Extension Deployment Scenarios Ethernet based solutions MPLS based solutions IP based solutions Path Optimization   Q&A 3060 - BRKDCT Public © 2011 Cisco and/or its affiliates. All rights reserved. Cisco 3

4 Data Center Interconnect Business Drivers DCI  Data Centers are extending beyond traditional boundaries PODs Virtualization applications are driving DCI across  (aggregation blocks) and Data Centers Use Case IT Solutions Constraints IT Business Driver Disaster Recovery / Avoidance  • Business Continuity  Data Center Maintenance / Localization • Business  VM  Migration / Consolidation Resource independence Stateless  Optimization  Vmotion versus Stateful  Workload Mobility Geo clusters  Bandwidth • Cloud services   Latency  Application • Operational  Policy synch Application High Availability   excellence conditioning Flexibility  Operation simplification Operational cost • containment 3060 - BRKDCT © 2011 Cisco and/or its affiliates. All rights reserved. Public Cisco 4

5 of Network HA & Applications HA Interdependancy DC to Network Alleviate to A Journey Constraints using IP Resilience using IP Resilience Resilience using VLAN L3 SWITCHING IP MOBILITY MAC ROUTING DCI NODE CLUSTERING DOMAIN STP FILTERING DCI FLAT L2 Cold HA Cluster X86 Server infrastructure CLOUD Virtualization Systems ‘Hot’ HA Breakthrough: 2008 2011 2000 2005 1997 2015 3060 - BRKDCT Public © 2011 Cisco and/or its affiliates. All rights reserved. Cisco 5

6 Data Center Interconnect – DCI model allow VLAN extension between sites Path Optimization Any type of links Homing - Dual STP control Domain isolation + Storm - STP STP STP domain domain domain GW ALT ALT GW GW ALT Si Si Si Si Si Si Si Si DC1 DC3 DC2 Storage extension 3060 - BRKDCT Public © 2011 Cisco and/or its affiliates. All rights reserved. Cisco 6

7 Center Interconnect Data Technology Selection Criteria  VSS & vPC or - Path Fabric  Applies easily for dual site interconnection Ethernet  Over dark fiber or protected D - WDM  Easy crypto using end - to - end 802.1AE VPLS VPLS & H - - A &  EoMPLS  L2oL3 for link protection (Fast detection & convergence / Dampening) PE style   Large scale MPLS -  Multi tenants  Works over GRE Most deployed today   OTV  L2oL3 for link protection (Fast detection & convergence / Dampening)  CE style Enterprise / DC focus  IP  Easy integration over Core  Works over MPLS transport Innovative MAC routing  - 3060 BRKDCT Public © 2011 Cisco and/or its affiliates. All rights reserved. Cisco 7

8 Data Center Interconnect Solution Alternatives Current MAC Bridging P2P MAC routing extension Transport Options 6500 Cat VSS Ethernet N7K 7K N vPC FabricPath /ASR9K C7600 /Cat 6500 ASR1K EoMPLS VPLS H - MPLS VSS A - VPLS N7K ASR1K VSS - EoMPLSoGRE A VPLSoGRE OTV IP Virtual Switching System, vPC VSS - – Virtual Port Channel, Private LAN service, - Advanced Virtual VPLS EoMPLS – Ethernet over MPLS, A - OTV Overlay Transport Virtualization - 3060 - BRKDCT Public © 2011 Cisco and/or its affiliates. All rights reserved. Cisco 8

9 Agenda DCI Business Drivers and Solutions Overview   LAN Extension Deployment Scenarios Ethernet based solutions MPLS Based Solutions IP Based Solutions Path Optimization   Q&A 3060 - BRKDCT Public © 2011 Cisco and/or its affiliates. All rights reserved. Cisco 9

10 Dual Sites Interconnection Leveraging between Sites Etherchannel Etherchannel On DCI :  STP Isolation (BPDU Filtering) Broadcast Storm Control   FHRP Isolation Primary Root Primary Root L L interface port channel10 - 2 2 WAN desc DCI point to point connection L L switchport 3 3 mode trunk switchport vpc 10 Si Si Si Si 100 - switchport 600 trunk allowed vlan tree port type edge trunk - spanning - enable spanning tree bpdufilter - control broadcast level 1 storm storm - control multicast level x - Multi Link utilization with  Server Cabinet Pair N Server Cabinet Pair N Server Cabinet Pair 1 Server Cabinet Pair 1 EtherChannel Chassis  : When vPC - channel  DCI port  DC routing! - Use dedicated L3 Links for Inter - 2 or 4 links Alternative solutions:  Requires protected  Shared L2/L3 link possible with static routing • DWDM or Direct fibers BRKDCT 3060 - © 2011 Cisco and/or its affiliates. All rights reserved. • Use dedicated VDC for routing Public Cisco 10

11 Validated Center Interconnect - VSS / vPC Data design Scalability Validation Testing  Public design guide www.cisco.com /go/DCI) ( http://www.cisco.com/en/US/solutions/collateral/ns340/ns517/ns224/ns949/ns304/ns975/data_center_i nterconnect_design_guide.pdf VSL or vPC Peer Link extended over 100km fiber • Layer 2: 200 Layer 2 + 100 VLAN SVIs VLANs 10,000 client - to - server flows at 20 Gbps • Layer 3 + 5000 1000 BGP routes also redistributed to OSPF routes OSPF Unicast & Multicast traffic protected on any failure in less Results: L2/L3  than 3 secs for any combination Cat6K More recent validation testing : (not yet published) with NX7K V4.2.6 & SXI  1200 VLAN + 1200 SVI (static routing) 20Gbps 6500 customer flows at Unicast Convergence around 4 to 5s worst cases Storm control contained on failing site BRKDCT 3060 - © 2011 Cisco and/or its affiliates. All rights reserved. Public Cisco 11

12 Agenda  DCI Business Drivers and Solutions Overview LAN Extension Deployment Scenarios  Ethernet based solutions MPLS based solutions • EoMPLS • VPLS - A VPLS • - H IP based solutions Path Optimization   Q&A 3060 - BRKDCT Public © 2011 Cisco and/or its affiliates. All rights reserved. Cisco 12

13 EoMPLS with DCI Usage End Loop Avoidance using Edge to Edge LACP - to - End Etherchannel : On DCI  STP Isolation (BPDU Filtering) Broadcast Storm Control  FHRP  Isolation Active PW Si Si MPLS Core Si Si DCI DCI Active PW Aggregation Aggregation Layer DC2 DC1 Layer g1 interface /1 EoMPLS port mode connection description sw no ip no on for cryptography: - Adds vcid 4.4.4.4 2 encapsulation mpls xconnect 7K 802.1AE Support Nexus • ASR1K Support • IPSEC 3060 - BRKDCT Public © 2011 Cisco and/or its affiliates. All rights reserved. Cisco 13

14 (PW) Failures PseudoWire Dealing with Remote Ethernet Port Shutdown PE receives the PW down shutdown its notification and toward transmit signal aggregation Active PW X Si Si X X MPLS Core Si Si DCI DCI Active PW Aggregation Aggregation DC2 Layer Layer DC1 : native support (enabled by default) ASR1000 Catalyst 6500: leverage a simple EEM script 3060 - BRKDCT Public Cisco © 2011 Cisco and/or its affiliates. All rights reserved. 14

15 Remote Ethernet Port Shutdown Failover Fallback feature configuration: ASR1000 (msec) (msec) interface GigabitEthernet1/0/0 54 281  Bridged eompls xconnect class - 1.1.1.1 1 pw traffic 300  453 link failure notification ! (default) remote based Approach with Catalyst 6500 - EEM logging status xconnect pseudowire event manager applet EOMPLS_T1_1_PW_DOWN PW_STATUS: MPLS peer 15.0.5.1 2504, VC vcid event syslog pattern "%XCONNECT - 5 - DOWN, VC state DOWN" action 1.0 cli command "enable“ Fallback Failover (msec) (msec) t“ action 2.0 cli command " conf 232  39 Bridged action 3.0 cli command " int t1/1“ traffic 402 504  action 4.0 cli command "shut“ action 5.0 cli command "no shut“ action 6.0 syslog Down“ " msg Pseudowire  Requires a separate EEM applet for each PW configured - establishment  Automatic recovery of the traffic after PW re negotiation) LACP (based on 3060 - BRKDCT Public © 2011 Cisco and/or its affiliates. All rights reserved. Cisco 15

16 Agenda  DCI Business Drivers and Solutions Overview  LAN Extension Deployment Scenarios Ethernet based solutions MPLS based solutions EoMPLS • A • - VPLS - • H VPLS IP based solutions Path Optimization   Q&A 16 © 2007 Cisco Systems, Inc. All rights reserved. 2840 - BRKDCT Cisco Public

17 Multi Point Topologies - What is VPLS? PW VFI VLAN VLAN MPLS Core SVI SVI VFI PW PW Mac address table population - is pure Learning Bridge  VFI - domain built using: One extended bridge  VFI = Virtual Forwarding Instance SVI = Virtual Switch Instance) VSI ( - Wire  PW = Pseudo = Switch Virtual Interface  SVI xconnect  VLAN 17 © 2007 Cisco Systems, Inc. All rights reserved. 2840 - BRKDCT Cisco Public

18 A - VPLS - Redundancy / Dual - Homing using VSS VPLS - Enable A vc # sh mpls l2 Local circuit intf Dest Local address VC ID Status ----- ------ ------------ ------------- ------------- VFI VFI_610_ VFI 10.100.2.2 610 UP Si Si Si Si VFI VFI_610_ VFI 10.100.3.3 610 UP VFI VFI_611_ VFI 10.100.2.2 611 UP VFI VFI_611_ VFI 10.100.3.3 611 UP : One PW per VLAN per destination Rem Si Si Si Si Ethernet 1 interface Virtual - switchport mode trunk switchport vlan trunk allowed switchport 800 - 610 Si Si Si Si class Core - neighbor 10.100.2.2 pw neighbor 10.100.3.3 pw class Core - pseudowire - class Core mpls encapsulation 720) Any card type facing edge (SUP  - ) 5Gbps 400 facing core ( -  Today: Requires SIP ) 40Gbps  Q2CY11: ES ( 18 2840 - BRKDCT Cisco Public © 2007 Cisco Systems, Inc. All rights reserved.

19 A – VPLS - Label Paths Traffic load Balancing Si Si Si Si Si Si Si Si ML - PW:  Multi Link Pseudo - Wire  ECMP on one VSS member Balance traffic between multiple Etherchannel :  RBH (Result Bundle Hash) Etherchannel balancing  Polarization of traffic within VSS member 19 © 2007 Cisco Systems, Inc. All rights reserved. 2840 - BRKDCT Cisco Public

20 A - VPLS – Redundancy Core LDP link failure X Si Si Si Si Si Si Si Si mpls ldp session protection router ldp mpls id Loopback100 force - LDP session protection & Loopback usage allows  Failover Fallback PW state to be unaffected (msec) (msec) 218 258  Bridged  LDP + IGP convergence in sub - second traffic 174 162  delay / BFD - Fast failure detection on Carrier  Immediate local fast protection Traffic exit directly from egress VSS node 20 © 2007 Cisco Systems, Inc. All rights reserved. 2840 - BRKDCT Cisco Public

21 Redundancy – VPLS - A Core 400 Card Failure or Dual Links Down) - isolation (SIP X Si Si Si Si X Si Si Si Si PW state is unaffected  Failover Fallback (msec) (msec)  LDP + IGP convergence in sub - second 102 87  Bridged delay / BFD Fast failure detection on Carrier - traffic 234 197  Traffic flows through the VSL link  Traffic exits directly from egress VSS node 21 © 2007 Cisco Systems, Inc. All rights reserved. 2840 - BRKDCT Cisco Public

22 Redundancy – VPLS - A VSS Node Failure (or Ingress Link) Si Si Si Si X mpls graceful ldp - restart Si Si Si Si  If failing slave node: PW state is unaffected  If failing master node: Failover Fallback • PW forwarding is ensured via SSO (msec) (msec) PW state is maintained on the other side using • 412 224  Bridged Graceful restart traffic 326 316   Edge Ether - channel convergence in sub - second Traffic is directly going to working VSS node  Traffic exits directly from egress VSS node  22 © 2007 Cisco Systems, Inc. All rights reserved. 2840 - BRKDCT Cisco Public

23 VPLS - A Design Constraints “Symmetry is good” See next slides explanation 23 2840 © 2007 Cisco Systems, Inc. All rights reserved. - BRKDCT Cisco Public

24 C Design VPLS - A ore ECMP Core Requirements Si Si Si Si / Solution Problem 10.100.1.1 sh ip route 10.100.1.1 2” Known via " ospf 2 via GigabitEthernet1/3/0/1 Route metric is Si Si Si Si 2 via GigabitEthernet2/3/0/1 Route metric is Si Si Si Si o one only route is put in RIB equal cost path to others, s - Remote VSS are having two un Stops forwarding traffic for 2mn when primary route is removed  (there is no control - plane to insert backup route) X Build a symmetric core with two ECMP paths between each VSS 24 © 2007 Cisco Systems, Inc. All rights reserved. 2840 - BRKDCT Cisco Public

25 ore - VPLS C A Design ECMP Core Requirements Si Si Si Si / Solution Problem 10.100.1.1 ip sh route 10.100.1.1 2” ospf Known via " via GigabitEthernet1/3/0/1 Route metric is 2 Si Si Si Si 2 via GigabitEthernet2/3/0/1 Route metric is Si Si Si Si If core cannot be symmetric due to link constraint design core in X recommended design is to double attach VSS to Best  25 © 2007 Cisco Systems, Inc. All rights reserved. 2840 - BRKDCT Cisco Public

26 Edge Design VPLS - A Design Edge at vPC if VSS or Supports any DCI Agg DCI Agg • Requires Aggregation to be VSS or vPC capable • Full mesh or partial mesh are supported No • redesign or specific requirement STP 26 © 2007 Cisco Systems, Inc. All rights reserved. 2840 - BRKDCT Cisco Public

27 A - VPLS Edge Design Attachement Circuits tree - Spanning Based Option 1 Option 2 Option 3 MPLS MPLS MPLS Root Root Root Intrusive to local STP design Not intrusive to local STP Not intrusive to local STP for VLANs extended design design Concern : Concern : Inter flow for POD - : Concern On DCI VSS failure root extend VLAN go thru DCI VSS failure On STP implies no control - is Benefit : there autostate - plane to VLAN STP convergence ensure flapping PW No STP convergence flapping 1.5 s for 200 VLAN No VLAN No flapping PW recommanded Not Acceptable Sturdy design with STP STP with design with design STP 27 2840 - BRKDCT Cisco Public © 2007 Cisco Systems, Inc. All rights reserved.

28 – Deployment consideration A - VPLS Dedicated VSS for DCI GW GW Si Si Si Si IP Si Si Si Si +MPLS Si Si Si Si Core GW GW Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si GW GW Si Si Si Si Si Si Si Si Si Si Si Si 1. PW is not supported in current release - Routed or routed A VLAN can either be xconnected SXJ Q2CY11 ) (12.2(33) Should be supported in Max VPLS neighbors = 32 2. 3. Max VLAN number 2000 (technically 4000) (initially tested for 500 without FHRP isolation) 28 2840 © 2007 Cisco Systems, Inc. All rights reserved. BRKDCT - Cisco Public

29 Agenda  DCI Business Drivers and Solutions Overview  LAN Extension Deployment Scenarios Ethernet based solutions MPLS based solutions EoMPLS • A • - VPLS - • H VPLS IP based solutions Path Optimization   Q&A 29 © 2007 Cisco Systems, Inc. All rights reserved. 2840 - BRKDCT Cisco Public

30 - like Enterprises - Providers or SP Service Centric Point of Presence (POP) DCI Service Enterprise DC Interconnection models: Provider DC to Provider DC • Enterprise DC to Provider DC • • Enterprise DCI POP / WAN Edge service initiation  Multi - tenants  MPLS  High Scale Cloud DCI Multi - tenant SP DC (Hosting Service) 30 © 2007 Cisco Systems, Inc. All rights reserved. 2840 - BRKDCT Cisco Public

31 Flexible Ethernet Virtual Circuit Ensure Service Granularity The Key Feature to Flexible frame classification Local VLAN significance /F SubI L3 Double tag awareness Routing Flexible VLAN tag translation PW VPLS Multiple Services on same port Bridging PW services L3 L2 + IRB per - H QoS VLAN PW X Security , OAM, High Availability and so on ... IRB Bridging X Routing and Bridging multiplexing. Flexible service mapping and Support all standard based services concurrently on the same port local connect and EoMPLS P2P L2   - point local bridging and H - Multi L2 VPLS&VPLS L2 - - L3 and IRB interface, and Integrated  sub L3 Regular 31 2840 - BRKDCT Cisco Public © 2007 Cisco Systems, Inc. All rights reserved.

32 MPLS TE for link bundle balancing How to improve balancing versus ECMP Parallel TE tunnels TE or FRR Protection repartition load ith w Selective trunk Multi grooming o f VLANs 32 © 2007 Cisco Systems, Inc. All rights reserved. 2840 - BRKDCT Cisco Public

33 MPLS DCI Conclusion A mature solution is an easy point to point solution EoMPLS   VPLS DCI is having two flavors: 1. A - VPLS based on node clustering Simplicity Very fast convergence Only available today with Catalyst 6500 2. H - VPLS based on mLACP attachment High end devices (7600 / ASR9K, ...) - Multi - tenant features High scale High SLA features Standard based 33 - © 2007 Cisco Systems, Inc. All rights reserved. BRKDCT Cisco Public 2840

34 Agenda  DCI Business Drivers and Solutions Overview  LAN Extension Deployment Scenarios Ethernet based solutions MPLS based solutions IP based solutions Overlay Transport Virtualization (OTV): Technology Overview Overlay Transport Virtualization (OTV): Deployment Considerations Path Optimization   Q&A 3060 - BRKDCT Public © 2011 Cisco and/or its affiliates. All rights reserved. Cisco 34

35 OTV Terminology Edge Device (ED) : connects the site to the (WAN/MAN) core; responsible  for performing all the OTV functions  Internal Interfaces : interfaces of the ED that face the site.  Join interface : interface of the ED that faces the core. capable interface. It - access multicast - logical multi  : Overlay Interface encapsulates Layer 2 frames in IP unicast or multicast headers. Overlay OTV Interface L3 L2 Core Join Interface Internal Interfaces BRKDCT - 2049 Cisco Public © 2011 Cisco and/or its affiliates. All rights reserved. 35

36 Building the MAC tables The OTV Control Plane  Neighbor discovery and adjacency over • Multicast Q2CY11 • Unicast (Target ) - MAC reachability (control advertises OTV proactively )  plane learning  No specific configuration required - IS is the OTV Control Protocol - IS MAC Addresses OTV OTV Advertisements IP A IP B East West IP C OTV South 3060 - BRKDCT Cisco Public © 2011 Cisco and/or its affiliates. All rights reserved. 36

37 OTV Data Plane Packet Flow Inter Site - 4. The Edge Device on site East receives Layer 2 lookup on the destination MAC. 1. and the packet. decapsulates MAC 3 is reachable through IP B. 5. Layer 2 lookup on the original frame. The Edge Device encapsulates the frame. 2. MAC 3 is a local MAC. The transport delivers the packet to the 3. 6. The frame is delivered to the destination. Edge Device on site East. 3 MAC TABLE MAC TABLE Transport Infrastructure IF VLAN MAC MAC IF VLAN Decap IP A IP B 100 1 Eth 2 MAC 100 1 IP A MAC 4 2 OTV OTV OTV OTV 1 5 Eth 1 MAC 100 2 Encap IP A MAC 2 100 MAC 3 A IP IP MAC 1   MAC 1  MAC 3 B Layer 2 Layer 2 B  IP MAC 3  MAC 1 A IP 3 MAC 100 IP B MAC 100 3 Eth 3 Lookup Lookup IP MAC 4 100 B Eth 4 100 MAC 4  MAC 3 MAC 1 6 West East MAC 1  MAC 1 MAC 3 MAC 3 Site Site BRKDCT - 3060 © 2011 Cisco and/or its affiliates. All rights reserved. Cisco Public 37

38 Spanning Tree and OTV Site Independence topology STP is site transparent: no changes to the  OTV Each site keeps its own STP domain  This functionality is built  no additional in into OTV and - configuration is required Device will send and receive the ONLY on BPDUs An Edge  OTV Internal Interfaces OTV OTV The BPDUs The BPDUs L3 stop here stop here L2 3060 BRKDCT - © 2011 Cisco and/or its affiliates. All rights reserved. Cisco Public 38

39 Unknown Unicast and OTV Preventing Unknown Unicast Storms OTV does not forward unknown unicast frames to the overlay.  without any additional configuration This is achieved points connected to the  The assumption here is that the end - network are not silent or uni - directional MAC TABLE VLAN MAC IF Eth1 100 MAC 1 OTV OTV 2 MAC 100 B IP L3 No MAC 3 in the - - - MAC Table L2 MAC 1  MAC 3 BRKDCT 3060 - © 2011 Cisco and/or its affiliates. All rights reserved. Cisco Public 39

40 Controlling ARP traffic Discovery (ND) Cache ARP Neighbor -  An ARP cache is maintained by every OTV edge device and is populated by snooping ARP replies Initial ARP requests are broadcasted to all sites, but subsequent  ARP requests are suppressed at the Edge Device and answered locally  ARP traffic spanning multiple sites can thus be significantly reduced 2 ARP reply 5 4 on reply ARP Subsequent behalf of ARP requests remote server IP A (IP A) OTV (IP A) Transport OTV Network 1 3 First Snoop & ARP cache request ARP Cache ARP (IP A) MAC A 1 IP reply BRKDCT - 3060 © 2011 Cisco and/or its affiliates. All rights reserved. Cisco Public 40

41 Configuration OTV over a Multicast Transport OTV  Minimal configuration required to get up and running otv feature feature otv site vlan 99 otv - site otv - vlan 99 interface Overlay1 interface Overlay1 - description EAST DC DC - description WEST otv - join /1.10 e1 interface /1 otv join - e1 interface group 239.1.1.1 - control otv otv control - group 239.1.1.1 232.192.1.0/24 group otv - data 232.192.1.0/24 - data otv group extend 150 - vlan 100 otv - 150 - vlan - extend otv 100 OTV OTV feature otv site otv - vlan 99 interface Overlay1 IP A IP B description SOUTH DC - East West otv join - interface Po16 otv control - group 239.1.1.1 - group 232.192.1.0/24 otv data IP C OTV vlan - extend 150 - otv 100 South 2049 - BRKDCT Cisco Public © 2011 Cisco and/or its affiliates. All rights reserved. 41

42 and OTV homing - Multi Fully Automated Solution  The Edge Devices within a site discover each other over the “ otv site vlan ”  OTV Authoritative elects one of the Edge Devices to be the Edge Device (AED) for a subset of the extended VLANs OTV Internal peering for AED election OTV AED 2049 - BRKDCT Cisco Public © 2011 Cisco and/or its affiliates. All rights reserved. 42

43 OTV - homing and Multi VLAN Splitting between Edge Devices  VLANs are split between the OTV MAC TABLE Edge Devices belonging to the same VLAN MAC IF AED site MAC 1 IP A 100 OTV Achieved via a very deterministic algorithm (not 2 MAC B 101 IP Transport Network configurable) Future functionality will allow to tune the IP A behavior OTV IP B - AED  System will ID determines which handle ODD / EVEN VLANs AED Per VLAN traffic load balancing in/out  a specific DC site - ED# show otv site OTV - VLAN: 1999) (* - this Site Adjacency Information (Site device) Overlay100 Site - Local Adjacencies (Count: 2) Hostname - ID Ordinal System ----------------- ---------------- ------- 0 - agg - 7k2 - otv 001b.54c2.e142 dc2a 7k1 - 1 0022.5579.0f42 otv agg - * dc2a - 2049 - BRKDCT Cisco Public © 2011 Cisco and/or its affiliates. All rights reserved. 43

44 OTV and SVI Coexistence Introducing the OTV VDC Currently, on the Nexus 7000 traffic  either belonging to a given VLAN can or be routed (associated with an SVI) OTV OTV VDC VDC extended using OTV - dual This would theoretically require a system L3 L3 solution L2 L2 The VDC feature allows to deploy a - vdc dual solution on the same physical device  Different OTV VDC deployment options Single Model Homed OTV VDC Dual Homed OTV VDC Model 2049 - BRKDCT Cisco Public © 2011 Cisco and/or its affiliates. All rights reserved. 44

45 Single Homed OTV VDC Simple Model  May use a single physical link for Join and Internal interfaces • Minimizes the number of ports required to N7K B - A - N7K VDCs interconnect the - 2 1 Link Link - Po1 convergence AED Link failure will lead to • OTV OTV VDC VDC May double them for sturdiness  Routing VDC Routing VDC  Physical node (or VDC ) failure leads re election - to AED OTV VDC OTV VDC Logical View In the current implementation may cause above 10 seconds of outage (for 50% of N7K B N7K - A - the extended VLANs) - Link Link 2 - 1 Po1  Failure of the routed link to the core Link 3 Link - 4 - is not OTV related Recovery is based on IP convergence Physical View Layer 3 Layer 2 2049 - BRKDCT Cisco Public © 2011 Cisco and/or its affiliates. All rights reserved. 45

46 OTV Scalability Current and Future Supported Values T anuary 2011): J he following values have been tested and verified (  3 Overlays  3 Sites 128 OTV extended VLANs*   12K MAC Addresses across all the extended VLANs*  1500 Sites’ Multicast Data Groups The values below will be supported in the upcoming 5.2 release (target Q2CY11)*: 16 Overlays  16 Sites  512 OTV extended VLANs** 256  - -  24K MAC Addresses across all the extended VLANs** 16K  3000 Sites’ Multicast Data Groups *Subject to change without notice **Across all configured Overlays 2049 - BRKDCT Cisco Public © 2011 Cisco and/or its affiliates. All rights reserved. 46

47 Placement of the OTV Edge Device Option 1 – OTV in the DC Core vPC Brownfield  Easy deployment for L3 boundary remains at aggregation - L2  vPC VSS SVIs SVIs SVIs SVIs  DC Core devices performs L3 and OTV vPC functionalities May use a pair of dedicated Nexus 7000 VLANs extended from aggregation layer  L2 “Octopus” design Recommended to use separate physical links for L2 & L3 traffic vPC STP and L2 broadcast domains not vPC VSS isolated between PODs SVIs SVIs SVIs SVIs vPC TECDCT - Public 2781 Cisco © 2011 Cisco and/or its affiliates. All rights reserved. 47

48 Placement of the OTV Edge Device Option 2 – OTV in the DC Aggregation L3  L2 - boundary at aggregation  DC Core performs only L3 role  STP and L2 broadcast Domains isolated between PODs  - DC and Inter - Intra DCs LAN extension provided by OTV Requires the deployment of dedicated OTV VDCs SVIs SVIs SVIs SVIs vPC vPC  Ideal for single aggregation block topologies Recommended for Green Field  deployments Nexus 7000 required in aggregation Cisco 2781 - TECDCT Public © 2011 Cisco and/or its affiliates. All rights reserved. 48

49 Agenda DCI Business Drivers and Solutions Overview   LAN Extension Deployment Scenarios Ethernet Based Solutions MPLS Based Solutions IP Based Solutions Path Optimization   Q&A 3060 - BRKDCT Public © 2011 Cisco and/or its affiliates. All rights reserved. Cisco 49

50 Path Optimization Mitigation of latency ISP B Layer 3 Core ISP A DC B DC A Public Network Agg Agg VLAN A Short distances (campus)  Access Access  distances Used for DR A/S for long DB End - Front - Data Base ) L2 Links (GE or 10GE BRKDCT - 3060 © 2011 Cisco and/or its affiliates. All rights reserved. Public Cisco L3 Links (GE or 10GE) 50

51 Egress Path Optimization FHRP Localization Active HSRP HSRP Standby Standby Active HSRP HSRP Layer 3 Core ISP B ISP A Intranet DC B DC A HSRP Filtering HSRP Filtering VACL ACL / Public Network Agg Agg VLAN A  Asymmetrical flows  No Stateful device Access Access Low ingress  traffic Node A VLAN B Private Network VLAN C HA cluster Node B HA cluster Node A Cluster VIP = 10.1.1.100 Preempt L2 Links (GE or ) 10GE Default GW = 10.1.1.1 Cisco Public 3060 - BRKDCT © 2011 Cisco and/or its affiliates. All rights reserved. L3 Links (GE or 10GE) 51

52 Optimization Ingress - Based DNS , ACE and GSS vCenter 144.254.1.100 144.254.200.100 144.254.1.0/24 is advertised into L3 WAN Layer 3 ISP B ISP A B Data Center A Data Center moved MAC Change the [email protected] 144.254.200.100 144.254.1.100 Public Network Agg Agg VLAN A Access Access VM= 10.1.1.100 Default = 10.1.1.1 GW Cisco Public 3060 - BRKDCT © 2011 Cisco and/or its affiliates. All rights reserved. 52

53 Prefix Route Locator - Routing Based Ingress Optimization ( RLOC ) LISP C, D 10.10.10.1 A, B Ingress Tunnel 10.10.10.2 A, B IP_DA 10.10.10.1 Router (ITR) ... ... 1 Encap C, D 10.10.10.5 2 D 10.10.10.6 C, Layer 3 Core IP_DA= A IP_DA = 10.10.10.1 ISP B ISP A Intranet 3 IP_DA= D IP_DA = 10.10.10.1 3 DC B DC A Decap Decap RLOC B A D C IP_DA = 10.10.10.1 IP_DA = 10.10.10.1 Public Network Agg Agg VLAN A point host ID ( ) End - EID Route Locator ( RLOC ) Access Ingress Tunnel Router ( ) Access ITR ) Egress Tunnel Router ( ETR 10.10.10.1 VM= ) L2 Links (GE or 10GE Default GW = 10.10.10.100 3060 Cisco - BRKDCT Public © 2011 Cisco and/or its affiliates. All rights reserved. L3 Links (GE or 10GE) 53

54 Service Normally in Left DC – VMotion Tier Framework and Active Network Services - Optimized Multi or LISP control or LISP control RHI DNS / RHI DNS / ISP B Layer 3 Core ISP A DC B DC A Agg Agg VLAN A  FHRP Isolation Access  Ingress routing optimization Access Move  application tier the whole Optimize the whole path:  Client to Server DB  erver to Server S  Server to Client End Front - Base - Data Cisco Public 3060 - BRKDCT © 2011 Cisco and/or its affiliates. All rights reserved. 54

55 DCI model – Data Center Interconnect VLAN Extension with DC isolation as well as POD isolation Using Path Optimization DCI control + FHRP Isolation - Domain isolation + Storm STP STP STP STP domain domain domain GW ALT ALT ALT GW GW ALT ALT Si Si Si Si Si Si Si Si DC2 DC1 DC3 Public BRKDCT - 3060 Cisco © 2011 Cisco and/or its affiliates. All rights reserved. 55

56 DCI Architectures Internet Branch OTV from aggregation model WAN WAN edge L3 DC1 DC2 Core L3 OTV L3 Aggregation L2 Access L2 Servers OTV is natively matching standard “ L3 Switching” design Cisco 3060 - BRKDCT Public © 2011 Cisco and/or its affiliates. All rights reserved. 56

57 DCI Architectures Internet Branch VPLS “DCI Core” model WAN WAN edge L3 DC1 DC2 VPLS Core L3 L3 Aggregation L2 Access L2 Servers A - VPLS is an easy way to build a dedicated DCI core - BRKDCT Public 3060 Cisco © 2011 Cisco and/or its affiliates. All rights reserved. 57

58 DCI Architectures Internet Branch - VPLS “DCI SP” or “SP like” model WAN with VPLS WAN edge L3 DC1 DC2 Core L3 L3 Aggregation L2 Access L2 Servers H - VPLS allows Multi - tenant DCI with high end SLA control & L3 segmentation Cisco 3060 - BRKDCT Public © 2011 Cisco and/or its affiliates. All rights reserved. 58

59 Data Center Interconnect Where to Go for More Information http://www.cisco.com/go/dci BRKDCT - 3060 Cisco Public © 2011 Cisco and/or its affiliates. All rights reserved. 59

60 Complete Your Online Session Evaluation  Give us your feedback and you could win fabulous prizes. Winners announced daily. Receive 20 Cisco Preferred  Access points for each session evaluation you complete. Complete your session  evaluation online now (open a browser through our wireless network to access our portal) or visit one of the Internet Don’t forget to activate your stations throughout the Cisco Live and Networkers Virtual Convention Center. account for access to all session materials, communities, and on demand - and live activities throughout the year. Activate your account at any internet station or visit www.ciscolivevirtual.com. 3060 - BRKDCT Public © 2011 Cisco and/or its affiliates. All rights reserved. Cisco 60

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