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  • Reducing Network TiersFlattening the Network

    Kevin Ryan

    Director Data Center Solutions

    www.extremenetworks.com

  • The New Computer

    Data center capacity, not server capacity, is the new metric

    Consolidation

    High Computational Density Physical Location Consolidation

    Green

    Efficient Power Management

    Virtualization

    On Demand Provisioning Hardware Independence / High Availability

    Location Independence

    Network / Storage Convergence

    Data Center Trends

    2010 Extreme Networks, Inc. All rights reserved.

  • A Four Phase Solution

    NetworkTopology

    ReduceNetwork

    Tiers

    Bandwidth andPerformance

    Fixed andModularPlatforms

    Robust andFlexibleStacking

    Integration withVM Platforms

    Provision1,000s ofSwitches

    across MultipleSites

    AutomatedConfiguration

    NetworkProfiles for

    VMs

    Heterogeneous(Best-of-Breed)

    support forVirtual

    Machines

    Network management

    software, single pane of

    glass

    Direct Attach

    1G 10G 40G 100G

    ApplicationAwareness &

    Support

    User GeneratedScripts

    XML-enabledInfrastructure

    Open APIs

    Program &ApplicationIntegration

    2010 Extreme Networks, Inc. All rights reserved.

  • A Four Phase Solution

    NetworkTopology

    ReduceNetwork

    Tiers

    Bandwidth andPerformance

    Fixed andModularPlatforms

    Robust andFlexibleStacking

    Integration withVM Platforms

    Provision1,000s ofSwitches

    across MultipleSites

    AutomatedConfiguration

    NetworkProfiles for

    VMs

    Heterogeneous(Best-of-Breed)

    support forVirtual

    Machines

    Network management

    software, single pane of

    glass

    Direct Attach

    1G 10G 40G 100G

    ApplicationAwareness &

    Support

    User GeneratedScripts

    XML-enabledInfrastructure

    Open APIs

    Program &ApplicationIntegration

    2010 Extreme Networks, Inc. All rights reserved.

  • Some Networking

    Challenges

  • Network Architecture Challenges

    Growing Tiers from 2 or 3 to 5 Traditional network tiers

    Core, distribution, access Blade Switch Tier

    Typically used instead of pass through to address cabling challenges

    Virtual Switch Tier

    Each tier adds:

    Oversubscription

    Latency

    Power

    Heterogeneity across and between switching tiers

    Management overhead Conflicting best practices

    Flat Layer 2 versus segmented MAC address explosion

    Driven by Virtualization and flatter networks

    2010 Extreme Networks, Inc. All rights reserved.

  • Network boundary between switch and server has blurred

    Switching at multiple levels

    Virtual switchNIC cardsBlade switchesNetwork switchesDistributed virtual switches

    Coexistence of different virtual switch models a challenge

    Virtualization: A Networking Problem

    2010 Extreme Networks, Inc. All rights reserved.

  • The Direct Attach Data Center

    Virtualization and Blade switches have introduced complexity to the network Additional 1 or 2 tiers

    Connect servers directly into EoRchassis Leverage high fan out I/O modules

    Leverage high-density MRJ21 connectors

    Eliminate blade switch

    Eliminate ToR switch

    Simplify cable management

    Collapse multiple tiers in the data center Reduce latency

    Reduce oversubscription

    Simplify management

    Reduce power

    2010 Extreme Networks, Inc. All rights reserved.

  • Standard Data Center Architecture

    Sample 12 Rack DC Network will have 5 Layers!

    384 vSwitches

    24 Blade Switches

    12 TOR Switches

    2 Agg Switches

    2 Core Switches

    A total of 424 Switches!!!

    2010 Extreme Networks, Inc. All rights reserved.

    Blade Chassis

    VSwitch

    Blade Chassis

    Blade Chassis

    Blade Chassis

    12 Racks

    Blade Switch

    TOR Switch

    Aggregation Switch

    Core Switch

    384 Blade Servers

    VSwitch

    VMVM

  • Server Virtualization: A Networking Problem

    Data Center Core

    VM1 VM2

    vSwitch

    Todays Inter-VM Switching

    Who manages and troubleshoots the virtual switch? Vswitch tools owned by server administrators Requires networking expertise and network

    coordinationVirtual switch heterogeneity leads to

    complexityProblem of scale

    Virtual switch in every server leads to explosion of managed switches in data center

    Troubleshooting and security challenges No network visibility into inter-VM traffic

    Inconsistency of policy between physical and virtual switches VM sprawl becoming a challenge

    2010 Extreme Networks, Inc. All rights reserved.

  • VM2

    Direct Attach Enabled Switch

    Host: Fedora 12Hypervisor: QEMU-KVM

    Guest OS: UbuntuActive applications: gnome-system-monitor

    for network and CPU utilization

    tcpdump to monitor attack traffic from VM1

    VM1

    Guest OS: UbuntuActive applications: gnome-system-monitor

    for network and CPU utilization

    hping to generate DoS attack targeted at VM2

    Inter-VM traffic is transmitted and received on the same network physical port. VM2 CPU and network utilization severely impacted, due to DoS attack.

    CLEAR-Flow enabled to dynamically provision/block DoS traffic. VM2 CPU and network utilization reverts to healthy.

    VM2

    Direct Attach: Eliminate the vSwitch Virtually Reducing Network Tiers

    2010 Extreme Networks, Inc. All rights reserved.

  • Direct Attach Physically Reducing Network Tiers

    High fan-out modules 96 ports on a single I/O module

    Up to 768 ports in one chassis

    No oversubscription Up to 128Gbs per slot

    MRJ 21 cabling 6:1 cabling reduction

    Go straight from Blade Server directly to Aggregation switch

    Eliminate multiple physical network tiers Blade switch

    ToR switch

    2010 Extreme Networks, Inc. All rights reserved.

  • A Four Phase Solution

    NetworkTopology

    ReduceNetwork

    Tiers

    Bandwidth andPerformance

    Fixed andModularPlatforms

    Robust andFlexibleStacking

    Integration withVM Platforms

    Provision1,000s ofSwitches

    across MultipleSites

    AutomatedConfiguration

    NetworkProfiles for

    VMs

    Heterogeneous(Best-of-Breed)

    support forVirtual

    Machines

    Network management

    software, single pane of

    glass

    Direct Attach

    1G 10G 40G 100G

    ApplicationAwareness &

    Support

    User GeneratedScripts

    XML-enabledInfrastructure

    Open APIs

    Program &ApplicationIntegration

    2010 Extreme Networks, Inc. All rights reserved.

  • Forward-looking Statements

    This presentation contains forward-looking statements that

    involve risks and uncertainties, including statements regarding

    our expectations as to products, trends and our performance.

    There can be no assurances that any forward-looking statements

    will be achieved, and actual results could differ materially from

    forecasts and estimates. For factors that may affect our

    business and financial results please refer to our filings with the

    Securities and Exchange Commission, including, without

    limitation, under the captions: Managements Discussion and

    Analysis of Financial Condition and Results of Operations, and

    Risk Factors, which is on file with the Securities and Exchange

    Commission (http://www.sec.gov). We undertake no obligation

    to update the forward-looking information in this release.

    2010 Extreme Networks, Inc. All rights reserved.

  • Thank You

    Kevin Ryan

    Director Data Center Solutions

    www.extremenetworks.com