Data Center Interconnects. Tony Sue HP Storage SA David LeDrew - HPN

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1 Data Center Interconnects Tony Sue HP Storage SA David LeDrew - HPN

2 Gartner Data Center Networking Magic Quadrant 2014 HP continues to lead the established networking vendors with respect to SDN with its SDN portfolio under the Virtual Application Networks banner The vendor remains a strong No. 2 player in the market, with recent launches of new data platforms (such as the FlexFabric Switch), should allow it to increase its presence in many enterprise accounts. HP should be considered for the shortlists for all data center networking requirements, especially for organizations looking to simplify network operations within a converged infrastructure or to take advantage of SDN as part of their data center network evolution. New data center products (such as the FlexFabric and 5930 Switch Series, and the 6125XLG Ethernet Blade Switch) provide HP customers with architectural choice and an ability to simply upgrade software and configurations to take advantage of new architectural approaches, such as fabric technologies and SDN.

3 Drivers for Layer 2 networks Application and server virtualization Virtualization of servers and applications is highly dependent on Layer 2 technology Network virtualization Virtualization demands increased control of traffic flows, efficient use of bandwidth, and reduced network elements for virtual backbones Geographic redundancy Virtual Layer 2 backbones eliminate the need for Layer 3 tunneling to extend both Layer 2 heartbeat traffic and private IP address space between separate data center locations Performance Ever-increasing need for more bandwidth. The deployment of Layer 2 virtualized backbones can reach far higher theoretical throughputs than their predecessors, which relied upon either STP or Layer 3 to manage traffic flow and flat Layer 2 network designs Majority of network traffic in contemporary data centers is horizontal from server to server which is more efficient in a Layer 2 environment If a VM is moved from one data center to another, the IP address and default gateway has to be changed manually. In a Layer 2 solution, this can be achieved without having to change any IP addresses, resulting in a simpler VM management environment

4 Data center interconnection (DCI) Various methods for interconnecting data centers Ethernet LAN extension Extends Ethernet natively over dark fiber or DWDM Mostly applies to point-to-point deployments, where the sites are connected via dedicated dark fiber links or protected DWDM optical circuits Requires users have optical fiber or transmission resources. Enterprise customer who own or manage their own dark fiber or DWDM service, or acquires a service from a provider Layer 2 Interconnections using VPLS / MPLS Uses MPLS technologies to provide L2 connectivity services over a L3 network service. VPLS can simulate an Ethernet switch among multiple data centers in MPLS network to make inter-layer 2 port forwarding decisions based on MAC address or the combination of MAC address + VLAN ID Ethernet virtual interconnect (EVI): IP-based solution option extremely useful in simplifying data center interconnect Runs over existing network transport such as Internet, private IP network or MPLS infrastructure so it can be deployed without requiring changes to an existing infrastructure Allows Layer 2 connectivity across the network without having to deal with Layer 3 networking dependencies Connect up to eight globally-located data centers and supports over four thousand VLANs

5 Overlay Networking Endpoint A Endpoint B Endpoint C Virtual Switch EDGE WWAS15 Hardwar e Switches EDGE Endpoint D

6 Underlay Underlay Endpoint A Endpoint B Endpoint C Virtual Switch WWAS15 Hardwar e Switches Endpoint D

7 VXLAN Outer Header VXLAN frame Outer Header VXLAN frame Encapsulation HostA = VTEP Hypervisor A IP VNI 1001 VNI 1000 Underlay Network Switch C IP Hypervisor B IP Decapsulation HostB = VTEP VM 1 VM 2 VM n Encapsulation/De VM frame capsulation frame Switch = VTEP Physical Server 5 VM n

8 Overlay Networking Technologies Let s have a look at VxLAN - Architecture - Encapsulation - Addressing (locating endpoints) - The control plane Underlay network Endpoint B Endpoint A Overlay network

9 Overlay Networking Technologies VxLAN architecture Hypervisor Endpoint A VTEP VTEP Endpoint VTEP B Hypervisor VTEP A VTEP B Tunnel endpoints: Virtual Tunnel End Point Responsible for encapsulation and de-encapsulation of packets They can exist in the Hypervisor They can also exist on the Underlay network, typically on the ToR access switch And a mixed environment

10 Overlay Networking Technologies VxLAN encapsulation MAC header 6 bytes 6 bytes 2 bytes 12 bits 4 bits Destination MAC Source MAC 00:00:00:00:00:02 00:00:00:00:00:01 Type 0x8100 VLAN ID CoS bytes Type 0x0800 CoS: IEEE802.1p IHL: Inner Header Length (20 bytes) IP header 18 bytes 4 bits 4 bits 1 byte 2 bytes 2 bytes 3 bits 13 bits 1 byte 1 byte 2 bytes 4 bytes 4 bytes MAC Version IHL ToS Length Identification Flags Offset TTL Protocol ChecksumDestination IP Source IP 0x4 DSCP Payload F/DF Fragment128-0 UDP: 0x UDP header 18 bytes 20 bytes MAC IP 2 bytes 2 bytes 2 bytes 2 bytes Source port Destination port Length Checksum VxLAN:0x4789 VxLAN header 18 bytes 20 bytes MAC IP UDP 8 bytes 1 byte 3 bytes 3 bytes 1 byte Flags Reserved VxLAN Network IdentifierReserved 24 bits means 16 million identifiers Means VNI present 18 bytes 20 bytes 8 bytes 8 bytes 32 bits VxLAN packet MAC IP UDP VxLAN FCS

11 Introduction: Traditional L2VPN Access Difficulty: It is impossible to completely integrate different access methods and different operator networks. Access IP / IPsec MPLS or IP IP / IPsec FR / ATM Broadband ATM FR / ATM Broadband Ethernet SONET Ethernet 11

12 Introduction: MPLS L2VPN Access L2VPN solution: The MPLS L2VPN technology is applied in the core network. Various access solutions can be completely integrated, no matter whether the operator network is an MPLS or IP network. Access IP / IPsec MPLS or IP IP / IPsec FR / ATM Broadband FR / ATM Broadband Ethernet Ethernet 12

13 Introduction: L2VPN Customer Site Tunnel Customer Site PE1 Pseudo Wires PE2 Customer Site Customer Site The L2VPN technology is used to transparently transmit L2 user data on a core network (as indicated by the blue box in the figure). As viewed by users, the core network is an L2 switching network through which L2 connections can be established between sites. Simply speaking, in the point of view of users, the devices of the two sites are directly connected with each other.

14 HP 5500 Switch Series Delivering scalability, agility, full enterprise feature set and low TCO 5500 HI 48G Enables business continuity with redundant management modules, hitless failover & nonstop switching Delivers outstanding resiliency, security, and multiservice support capabilities at the edge layer of large campus and branch networks. MPLS/VPLS, which is available on the 5500 HI Series Switches for Metro Ethernet deployments No software license required Stacking up to nine switches in a ring (up to 70 km distance); Fully featured L3 functionality, including RIP, OSPF, ISIS, BGP, and PIM Covered under our lifetime Warranty HI 24G 2 OR 4 FIXED SFP+ 10G UP-LINKS UP TO 9 Switches in a stack UP TO 1440W OF PoE+

15 Ethernet Virtual Interconnect EVI encapsulates traffic and transports it across a GRE Tunnel. It s standard MACoGRE (MAC over GRE) Each EVI network has A unique network ID Extends a unique list of VLAN s Has a separate control plane Has a separate forwarding plane Uses EVI IS-IS to propagate MAC info DC-01 DC-02 EVI DC-04 DC-03

16 DCI - Ethernet Virtual Interconnect (EVI) With EVI, enterprises are able to: Accelerate the delivery workload mobility with remote vmotion Increase applications performance with multipathing and load balancing Allow organizations to scale to up to 16 geographically dispersed data centers without requiring them to change the underlying network Simplify the L2 connection by encapsulating traffic over GRE and automatically isolate Spanning Tree Protocol Achieve optimum degrees of high availability and disaster recovery for valuable data Allows clients to have a simple set of L2 routing extensions that can provide data interconnectivity in minutes rather than the months of legacy approaches like VPLS

17 What is CLOS? CLOS Networks are named after Charles Clos who in 1953 published a paper to the Bell Systems Technical Journal entitled A Study of Non-blocking Switching Networks. Crossbar fabrics fell out of favor due to HOL (Head of the Line) blocking due to input queue limitation Limitations with technologies such as spanning tree made Fat Tree (3 tier architectures) inefficient and as network speeds and memory of the switches increased, so did the availability of ECMP technologies (TRILL / SPB, etc )

18 TRILL Data Center WAN Edge TRILL Fabric Core Access L3 L2 boundary

19 Example Of A HP Standards Based DC Fabric L3 Routers Spine Switches Link Aggregation Group (LAG) 2 stage CLOS network design L2 TRILL Fabric Leaf Switches 10/40G interconnects App VMs + VMs that provide services as L3 routing, Firewall, Load Balancer capabilities Servers TRILL is typically deployed in the data center using a CLOS network design with spine and leaf switches Leaf switches connect to spine switches while servers are connected to leaf switches. TRILL expansion is simple by either adding additional spine or leaf switches to increase capacity or performance.

20 HP FlexFabric Portfolio Core Aggregation WAN 12500E / / HSR6800 / 8800 VSR Access BladeSystems Virtual Connect 61xx Blade Switch 5700, 58X0, 59X0 Management IMC Service Orchestration Security TP Core Controller, vcontroller - S5100N IPS, Security Subscription Services

21 FlexFabric Switch Series Data center optimized distributed non-blocking architecture Next generation data center core switches Highest density 10G/40/100 GbE in Flex Fabric portfolio Data center optimized architecture Fully distributed architecture for data center core Data center Comware v7 innovations Modular enterprise networking OS built for resiliency Advanced features for L2/L3 and IPv4/APv6 scalability OpenFLow 1.3 support for SDN environments HP innovations and open standards power with IRF, TRILL, SPB, DCB, FCoE and more FlexFabric FlexFabric TBPS switching capacity Up to 256 wirespeed 40GbE ports Up to 768 wirespeed 1/10GbE ports

22 HP HSR6800 Router Series HSR6802 HSR6804 HSR6808 High performance distributed processing (up to 420 Mpps forwarding, 2 Tbps switch capacity) Comprehensive routing, switching, and security High density WAN (10 GbE, 40/100 GbE ready) IRF Ideal for small to large data center and campus WAN edge, aggregation, and core deployments

23 HP 8800 Router Series HP 8805 HP 8808 HP 8812 Distributed architecture with 4 independent plane separation, three engine forwarding, and non-blocking crossbar technology for high performance routing & scalability up to 864M PPS Comprehensive routing, switching, and security High density WAN/LAN options: Ethernet, 10GbE, OC-3~192, Serial, RPR, POS, CPOS Operates on the WAN edge, aggregation and core layers High reliability to fully meet carrier-level reliability requirements

24 HP VSR1000 Series - Virtual Services Router (VSR) Licensable, Comware 7 software product Runs on a VM created by the hypervisor installed on a COTS physical server. VSR provides the same functions and experience as the physical router. ISO, OVA, and IPE formats License based on: The number of Virtual CPUs (1, 4, 8) Minimal Resource Requirement for VM: 1 vcpu, 1GB RAM, 8GB Disk, 2 vnics VM VM VM VSR Hypervisor Server E1000, VMXNET3, VirtIO VMware vsphere, Linux KVM Standard X86 server

25 Data Center 40GbE Enterprise ToR HP FlexFabric QSFP+ (JG726A) 40 GbE FlexFabric 5930 (JG726A) Leaf 5900 switches Spine 5930 switches - High Density 40 GbE ToR formfactor - 32 Ports of 40 GbE QSFP+ - Up to 104 Ports of 10 GbE via breakout cables. - Support for VXLAN and NVGRE gateway - Enhanced IRF for simpler network management - Full Comware v7 feature set

26 Data Center 10GbE Enterprise ToR Deep Buffer Ultra Deep Buffer FCoE 5900AF-48XG-4QSFP 5900AF-48XGT-4QSFP XG-SFP+ 5920AF-24XG XG-SFP+, FCoE FC / FCoE XGT-8XG-2QSFP XG-2QSFP+ HP FlexFabric 5900CP-48XG-4QSFP+

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