HomeRun Training Switching I 1999, Cisco Systems, Inc.

Transcription

1 Switching I Reto Burger reto.burger@burger-inf.ch 1999, Cisco Systems, Inc. 1 Ethernet and CSMA / CD Bus CS: Carrier Sense (everybody s listening) MA: Multiple Access 2 Ethernet and CSMA / CD CD: Collision Detection Jamming! Bus 3 Cisco Systems (Schweiz) AG 1

2 Ethernet and CSMA / CD Bus After a Collision both Devices wait and retransmit, they calculate their waiting time with the unique MAC-Address 4 Ethernet Constraints Limited users within segment No security 5 Switch vs. Hub 6 Cisco Systems (Schweiz) AG 2

3 The Internetworking Model Application Layer: Programm <=> Programm (Mail, FTP) <= Transport Layer: End to end connections => <= Sockets => <= Network Layer: Addresses and best path => <= IP Adresse => <= Data Link Layer: Access to media => <= Ethernet Adresse => <= Physical Layer: Binary transmission => <= => Router => packets Switch => frames Hub => bits 7 Hubs (Shared Ethernet) Flood all ports with incoming information Shared Ethernet 10 8 LAN Switches Enables dedicated access Eliminates collisions and increases capacity Supports multiple conversations at a time Switched Ethernet 10 Application Presentation Session Transport Network Data Link Data Link 9 Cisco Systems (Schweiz) AG 3

4 Layer 2 Switching A 99B0 Source Dest Frame Packet Switching Table MAC Address A 99B0 Output Interface Ethernet Switching II Reto Burger reto.burger@burger-inf.ch 1999, Cisco Systems, Inc. 11 Early Warning Signs Very slow file transfers Print server timeouts High hub utilization rates High collision rates Thinking about using multimedia SLOW Mbps 12 Cisco Systems (Schweiz) AG 4

5 Broadcasts Consume Bandwidth Apple TCP/IP Resolve addresses Distribute route information Find network services 13 Switching (Dedicated Media) Workstation 10/100 Mbps dedicated SWITCH 14 Using Full-Duplex Halfduplex Full-duplex HUB Node must Be directly attached to a dedicated switched port Have installed adapter that supports full-duplex 15 Cisco Systems (Schweiz) AG 5

6 Fast/Giga EtherChannel Switch to Switch Switch to Server Switch to Router Solution: Scalable bandwidth up to 800 MB FDX or 8 GB FDX True load balancing across links Si Si 800 MB 8 GB 400 MB 4 GB Si 16 Fast EtherChannel Partners Enterprise Servers Network Interface Cards Fast EtherChannel 17 VLAN Overview VLAN 1 VLAN 2 Broadcast Domain 1 Broadcast Domain 2 18 Cisco Systems (Schweiz) AG 6

7 Interswitch VLAN (Inter Switch Link) Cisco ISL Protocol DA SA VLAN Colour/ID Fast Ethernet Data CRC VLAN1 VLAN 2 VLAN1 VLAN 2 19 ISL (Inter-Switch Link) ISL Enables VLANs Across the Backbone Low-latency mechanism for passing VLAN packets across fast Ethernet backbones Effective between switches, routers, intelligent server nics Non-intrusive to client stations Applicable across all protocol types Effective for managing broadcasts, spanning tree, security, redundancy to and from servers VLAN Tag Added by Incoming Port VLAN Tag Stripped by Forwarding Port Interswitch Link (ISL) Carries VLAN identifier 20 Virtual LANs VLAN 1 VLAN 2 VLAN 3 Server Farm One broadcast domain within switch VLANs help manage broadcast domain Can be defined on port groups, users or protocols for broadcast control, firewall protection, and simplified adds, moves, and changes 21 Cisco Systems (Schweiz) AG 7

8 Switching Methods Cut-through Switch checks DA and immediately begins forwarding frame Store-and-forward Complete frame is received before forwarding Frame Frame Frame Frame 22 Spanning Tree Protocol The Spanning Tree Protocol stops Loops (caused through several possible paths). this is reached by obstruction of a Ports. Nevertheless, the option sticks on an alternative-path (Failover) with cancellation of a network-component. 23 SPAN Port A single port can be configured to monitor one, all, or any group of other switch ports Monitors traffic seen on the switch bus only Useful for an RMON probe or sniffer Uses configured switching mode 24 Cisco Systems (Schweiz) AG 8

9 Switching Summary Collision-free Ethernet Simple uplinks to high-speed backbones Quick network response Increased user productivity Allows implementation of VLAN 25 And now: 5 Minuten Pause 1999, Cisco Systems, Inc. 26 Home Run Lab Using Visual Switch Manager 1999, Cisco Systems, Inc. 27 Cisco Systems (Schweiz) AG 9

10 Cisco Visual Switch Manager Device management through Web-based Interface 28 Switch Network View Enables full topology view of the network 29 Cisco Visual Stack Provides stack view of Catalyst 2900 XL switches 30 Cisco Systems (Schweiz) AG 10

11 Cisco Visual Switch Manager (CVSM) 2.0 Enhancements Single IP-address based management Web-based anytime anywhere access Device level monitoring Cluster Management Built-in HTTP server 31 Cluster Builder View Displays network topology of Cluster Cluster members added through simple point and click All Cluster switches have same enable password 32 Cluster Manager Detailed frontpanel view of Switch Cluster Allows selection and configuration of switch ports Member switches can have their own IP address 33 Cisco Systems (Schweiz) AG 11

12 Cluster Software Upgrade Convenient software upgrade to multiple switches at a time Only similar switches can be upgraded as a group 34 LAB Switch Cluster Command Switch 3524 XL 3524 XL EtherChannel Catalyst 2900 series XL 2924 XL 35 LAB Addressing Schema some commands / XL Command / XL Member / XL Member Switch-homerun-1>en Password: cisco Switch-homerun-1#sh run Switch-homerun-1#conf t Switch-homerun-1(config)#in vlan1 Switch-homerun-1#end Switch-homerun-1#disable 36 Cisco Systems (Schweiz) AG 12

13 And now: Try it! 1999, Cisco Systems, Inc. 37 Switching Products For SMB s 1999, Cisco Systems, Inc. 38 Cisco Micro Switch 10/100 Series 39 Cisco Systems (Schweiz) AG 13

14 Catalyst Switch Family Acquisition Price Functionality Standalone 10/100 switch new New Catalyst 3500 XL Catalyst 4912 Catalyst 4000 Catalyst 5500 Catalyst 2948G Catalyst 2900 XL Catalyst 1900 Flexibility 40 Cisco SMB Switch Portfolio (Layer 2) & User Medium Businesses SOHO Small Branch Offices Cisco 1548U 8 port 10/100 SWITCH _08F0_c1 1999, Cisco Systems, Inc User Medium Businesses Larger Branch Offices Cisco 1548M 8 port 10/100 SWITCH Cisco 1538M 8 port 10/100 HUB FastHub or 24 port 10/100 HUB Catalyst or 24 port 10BaseT switch 2 100BaseT uplinks Catalyst 3500 XL 12, 24,48 port 10/100 switch + 2 built in gigabit uplink ports Catalyst 2900 XL 12 or 24 port 10/100 switch 2 module slots GBIC Stacking Clustering Rackmountable SNMP Management 41 Catalyst 1900 Series 12 or 24 switched 10BaseT ports + one switched AUI 1024 MAC addresses Two, fixed 100BaseT ports on all models Two 100BaseTX ports or; One 100BaseTX port and one 100BaseFX port Smaller nine inch-deep footprint SPAN port (Switched Port Analyzer) Optional redundant power supply 42 Cisco Systems (Schweiz) AG 14

15 Catalyst 2900 Series XL Fast Ethernet Switches Standard and Enterprise Editions 43 Catalyst 2900 XL Series Unit Price Catalyst 2912 XL Twelve 10/100 Ports Cisco Switch Clustering (SA6) One RU, Ideal for SMB LAN Catalyst 2924 XL Twenty-Four 10/100 Ports Two fiber uplinks Ports Cisco Switch Clustering (SA6) One RU, Ideal for desktop and server connectivity Catalyst 2924M XL Twenty-Four 10/100 Ports Two versatile module slots Cisco Switch Clustering (SA6) Ideal for LAN aggregation, desktop and server connectivity Standard and Enterprise Editions Standard and Enterprise Editions Standard and Enterprise Editions Low-Port Density High-Port Density Versatile Modularity 44 Catalyst 2912 XL Ideal for small-medium sized networks as LAN aggregator 12 10BaseT/100BaseTX ports ISL/802.1Q VLAN trunking on all ports 2,048 MAC addresses Available in Standard or Enterprise Editions 12 10BaseT/100BaseTX Ports 45 Cisco Systems (Schweiz) AG 15

16 Catalyst 2924 XL Ideal for desktop connectivity 24 10BaseT/100BaseTX ports ISL/802.1Q VLAN trunking on all ports 2,048 MAC addresses Available in Standard or Enterprise Editions 24 10BaseT/100BaseTX Ports 46 Catalyst 2924C XL Ideal for desktop connectivity with low cost fiber uplinks 22 10BaseT/100BaseTX ports 2 100BaseFX ports ISL/802.1Q VLAN trunking on all ports 2,048 MAC addresses Available in Standard or Enterprise Editions 22 10BaseT/100BaseTX Ports and 2 100BaseFX Ports 47 Catalyst 2924M XL Ideal for desktop connectivity or workgroup aggregation 24 10BaseT/100BaseTX ports Two slots to accommodate available modules ISL/802.1Q VLAN trunking on all ports 8,192 MAC addresses Available in Standard or Enterprise Editions Two Versatile Module Slots 24 10BaseT/100BaseTX Ports 48 Cisco Systems (Schweiz) AG 16

17 Versatile Modularity Two versatile module slots (2924M XL and 2912MF XL) Optional ISL/802.1Q expansion modules: 4-port 10BaseT/100BaseTX switch module 2-port 100BaseFX switch module 4-port 100BaseFX switch module Gigabit Ethernet and ATM interface modules 49 Catalyst 2900M XL Modules ISL/802.1Q VLAN modules 4-port 10/100 TX module 2-port 100BaseFX module 4-port 100BaseFX module ISL/802.1Q support Gigabit Ethernet module Single-port 1000BaseX module with GBICbased media slot ISL/802.1Q support FCS: Q1CY99 ATM modules Single-port OC-3 ATM modules, including: UTP Multi-mode fiber Single-mode fiber, medium reach (10Km) Single-mode fiber long reach (40Km) FCS: Q2CY99 ISL/802.1Q VLAN Modules 50 Backbone for Small to Medium-Sized LAN Small and medium-sized LAN backbone for switch, hub, and server aggregation Legacy 10BaseT Hub Catalyst 2924M XL Servers Gigabit Ethernet, Fast EtherChannel or 100BaseTX FastHub /100 Hub Catalyst 1900 or 2900 XL Switches 51 Cisco Systems (Schweiz) AG 17

18 The New Catalyst 3500 Series XL Product Line new Presentation_ID 52 The New Catalyst 3500 XL Series Unit Price Catalyst 3512 XL Catalyst 3524 XL Catalyst 3548 XL Catalyst 3508G XL Twelve 10/100 Ports Two GBIC-Based GE Ports Cisco Switch Clustering Stackable, One RU Ideal for SMB Aggregation Standard and Enterprise Editions Twenty-Four 10/100 Ports Two GBIC-Based GE Ports Cisco Switch Clustering Stackable, One RU Ideal for Desktop Connections Standard and Enterprise Editions Fourty-Eight 10/100 Ports Two GBIC-Based GE Ports Cisco Switch Clustering Stackable, One RU Ideal for Stack Aggregation Standard and Enterprise Editions Eight GBIC-Based GE Ports Cisco Switch Clustering Stackable, One RU Ideal for Stack Aggregation Standard and Enterprise Editions Low-Port Density Medium-Port Density High-Port Density Switch Gigabit Ethernet Switch 53 Catalyst 3500 Series XL Product Line Overview Exceptional Performance: 10-Gbps switch fabric, 7.5 million pps forwarding rate Revolutionary Cisco Switch Clustering and flexible GigaStack stacking technology Best-in-class management: Web-based Cisco Visual Switch Manager (CVSM 2.0) CiscoWorks 2000 Cisco IOS software provides end-to-end integration Lifetime Limited Warranty 54 Cisco Systems (Schweiz) AG 18

19 Standard Edition and Enterprise Edition Features Standard Edition CVSM 2.0 Network Time Protocol (NTP) Port-Based VLANs CGMP Fast Leave Network Port Fast EtherChannel and Gigabit EtherChannel Enterprise Edition All Standard Edition Features plus: ISL and 802.1Q VLAN Tagging Support VLAN Trunking Protocol (VTP) Uplink Fast TACACS p software (future) 55 Catalyst 3512 XL Ideal for desktop connectivity or SMB aggregation 12 10BaseT/100BaseTX ports Two GBIC-based Gigabit Ethernet/stacking ports Nonblocking, wire-speed performance ISL/802.1Q VLAN trunking on all ports Built-in Cisco Switch Clustering 8192 MAC addresses Available in Standard or Enterprise Editions Two GBIC-Based Gigabit Ethernet Ports 12 10BaseT/100BaseTX Ports 56 Catalyst 3524 XL Ideal for desktop connectivity or workgroup aggregation 24 10BaseT/100BaseTX ports Two GBIC-based Gigabit Ethernet/stacking ports Nonblocking, wire-speed performance ISL/802.1Q VLAN trunking on all ports Built-in Cisco Switch Clustering 8192 MAC addresses Available in Standard or Enterprise Editions Two GBIC-Based Gigabit Ethernet Ports 24 10BaseT/100BaseTX Ports 57 Cisco Systems (Schweiz) AG 19

20 Catalyst 3548 XL Ideal for desktop connectivity or as SMB Core Switch 48 10BaseT/100BaseTX ports Two GBIC-based Gigabit Ethernet/stacking ports Nonblocking, wire-speed performance ISL/802.1Q VLAN trunking on all ports Built-in Cisco Switch Clustering 8192 MAC addresses Available in Standard or Enterprise Editions Two GBIC-Based Gigabit Ethernet Ports 48 10BaseT/100BaseTX Ports 58 Catalyst 3548 XL new The Ideal Stackable 10/100 Switch with 48 ports and Integrated Gigabit Ethernet Top price/performance Superior manageability and scalability High density in compact design QoS/VoIP support Gigabit uplink and stacking options 59 Catalyst 3508G XL Ideal for high-performance stack matrix aggregation Eight GBIC-based Gigabit Ethernet/stacking ports Deliver 5-Gbps forwarding rate to a cluster of switches ISL/802.1Q VLAN trunking on all ports Built-in Cisco Switch Clustering 8192 MAC addresses Available in Standard or Enterprise Editions 8 GBIC-Based Gigabit Ethernet Ports 60 Cisco Systems (Schweiz) AG 20

21 Performance Benchmark Test (Mier Communication Inc., May 1999) Full Stack (8 Cisco/Nortel, 4 3com) Throughput Test : No Local / 100% Interswitch Traffic Packet Size Cat 3524XL Nortel 3Com BayStack 450- SuperStack II 24T Gbps 0.43 Gbps 1.08 Gbps Gbps 1.43 Gbps 1.64 Gbps Gbps 1.34 Gbps 1.70 Gbps 61 Catalyst 3500 Series XL Pricing Product Number Base Models Product Description List Price SFr. WS-C3512-XL-EN Catalyst 3512 XL Enterprise Edition WS-C3524-XL-EN Catalyst 3524 XL Enterprise Edition WS-C3548-XL-EN Catalyst 3548 XL Enterprise Edition WS-C3508G-XL-EN Catalyst 3508G XL Enterprise Edition WS-X3500-XL GigaStack GBIC with 50cm stacking cable GigaStack GBIC Versatile, Low-Cost Stacking Solution Presentation_ID 63 Cisco Systems (Schweiz) AG 21

22 Cost-Effective Gigabit Uplinks Cost-effective dual integrated GBIC ports Deployment flexibility SX, LX/LH, ZX, GigaStack 5.4 Gbps forwarding rate Gigabit EtherChannel Higher availability via uplink fast High-speed stack aggregation Catalyst 3508G XL 64 GigaStack Stacking GBIC Gigabit Ethernet stacking technology Plugs into a standard 3500 XL or 2900 XL GBIC slot Copper-based cabling technology (1 meter maximum length) 65 GigaStack GBIC Connection Options Catalyst 3508G XL Daisy Chain at 1-Gbps Forwarding Rate GigaStack GBIC Catalyst 3524/3512 XL OR Point to Point at 2-Gbps Forwarding Rate GigaStack GBIC 66 Cisco Systems (Schweiz) AG 22

23 Catalyst 3508 Series XL Catalyst 3524 Series XL Catalyst 3524 Series XL Catalyst 3524 Series XL Catalyst 3524 Series XL Catalyst 3524 Series XL HomeRun Training Gigabit Interface Converter (GBIC) SX SX The The WS-G5484, 1000BaseSX operates on on ordinary multimode fiber optic link link spans of of up up to to m in in length LX/LH The The WS-G5486, 1000BaseLX/LH interfaces interfaces fully fully comply comply with with the the IEEE IEEE 802.3z 802.3z 1000BaseLX standard. standard. However, However, their their higher higher optical optical quality quality allows allows them them to to reach reach km kmover single-mode fiber fiber (SMF) (SMF) versus versus the the 55 km km specified specified in in the the standard standard ZX ZX The The WS-G5487, 1000BaseZX operates operates on on ordinary ordinary single single mode mode fiber fiberoptic link link spans spans of of up up to to km km in in length. length. Link Link spans spans of of up up to to km km are are possible possible using using premiumsingle mode mode fiber fiberor or dispersion dispersion shifted shifted single single mode mode fiber fiber (premium (premium single single mode mode fiber fiberhas has a a lower lower attenuation per per unit unit length length than than ordinary ordinary single single mode mode fiber; fiber; dispersion dispersion shifted shifted single single mode mode fiber fiber has has both both lower lower attenuation per per unit unit length, length, and and less less dispersion) new Supported end of GigaStack Application 1: Independent Stacking Bus Single Daisy-Chain Stacking Bus Up to nine switches can be daisy-chained through GigaStack GBICs Delivers 1-Gbps independent stack bus to the entire stack Supports redundant loop back for added fault tolerance Catalyst 3500 XLs or Gigabit-enabled Catalyst 2900 XLs 68 Application 2: Stack with Catalyst 3508G XL Catalyst 3508G XL Star-Wired Stack Gigabit Ethernet or Gigabit EtherChannel Uplinks High-performance aggregation through Catalyst 3508G XL Delivers 5-Gbps forwarding rate to the stack 2-Gbps full-duplex on each point-to-point connection 69 Cisco Systems (Schweiz) AG 23

24 Catalyst 2900 series XL Catalyst 2900 series XL Catalyst 1900 series Catalyst 2900 series XL Cisco 2600 Catalyst 2900 series XL Catalyst 1900 series Catalyst 2900 series XL Catalyst 2900 series XL HomeRun Training Cluster Application: Medium Business/Large Branch Cat 3508G XL Catalyst 6000, 5500, and 4000 Series Enterprise Switch Cat 3524 XL Cat 3524 XL Cat 3524 XL Cat 3524 XL Cat 3524 XL Cat 2924M XL 70 Cluster Application: Enterprise Workgroup Cat 3508G XL Enterprise Backbone Switch Cat 3524 XL Cat 3524 XL Cat 3524 XL Cat 2924M XL Cat 2924M XL Cat 3524 XL Cat 2924M XL Cat 3524 XL Cat 1924 Cat 3512 XL Cat 2924M XL 71 Cluster Application: Small/Medium Office ISDN Cisco 2621 Cat 3524 XL Server Cat 2924 XL Cat Cisco Systems (Schweiz) AG 24

25 Design Guideline GigaStack GBIC for Incorrect GigaStack GBIC configurations Switch performance degrades Stacking Bus becomes unusable Incompatible GigaStack GBIC cables Do NOT use 1394 (Firewire) cables 73 Cisco Switch Walkthrough (Stackable and Standalone) Desktop Switch Ethernet Fast Ethernet Token Ring Media Media 100BT 100FX FDDI ATM 100BT 100FX GigE FDDI ATM Cat 1912 Cat 2828 Cat 2828 Cat 29xx XL Cat 2924M XL Cat 2924M Cat x 10BT 12/24 x 10/100TX 24 x 10BT 24 x 10/100TX 24 x 10/100TX 2 Uplink Slots 2 x 100TX uplinks 12/24 x 10BT 2 x Uplink Slot 2 x Uplink Slots 2 x Uplink Slot 2 x 100TX FDDI DAS BPS supported Standalone only BPS supported BPS supported FDDI SAS Stackable Stackable Stackable FDDI UTP Cat1912F Cat 35xx Standalone Cat1924F Cat2924C XL 12/24/48 x 10/100TX 24 x 10BT 24 x 10/100TX 2 x GigE (GBIC) 2 x 100FX 2 x 100FX BPS supported No FDDI BPS supported Stackable Cat1912C Stackable Cat 2948G Solution Cat1924C Cat2924M XL 48 x 10/100TX 32 x 10BT 24 x 10/100TX 2 x GigE (GBIC) 1 x 100FX + 1 x 100TX 2 Uplink Slots Standalone only BPS supported Stackable Cat or 24 x 4/16 T/R 2 x 100TX or 2 x 100FX Stackable *BPS = Backup Power Supply 74 Switch Clustering Gigabit Ethernet or Gigabit EtherChannel Catalyst 8500, 6000, 5500, and 4000 Series Enterprise Switches Command Members Catalyst 3508G XL Closet A Catalyst 1900 and 2900 XL Daisy-Chain with Fast EtherChannel Closet B Catalyst 3500 XL Daisy-Chain with GigaStack GBICs Closet C Combination Single IP Managed Domain 75 Cisco Systems (Schweiz) AG 25

26 Management with First-Generation Stacking Initial installation and configuration of each stack/device No integrated management interface Separate troubleshooting for each device Wasted IP addresses Separate firmware upgrade for each stack/device Floor Floor 4 76 Initial installation and configuration of the entire cluster Embedded cluster-wide Web management interface Troubleshooting across entire cluster from a single Web page Conserving IP addresses Rapid firmware upgrade across the cluster Management with Switch Clustering Floor Floor 4 77 Clustering Resolves Traditional Stacking Weaknesses First-Generation Stacking Physical Integration Limited to Single Wiring Rack Proprietary Interconnect Limited Management Interface 4 8 Single IP Domain Size Limited Stack Citizens No Investment Protection Fixed Price/Performance Point Cisco Switch Clustering Logical Integration Location Anywhere on a LAN Open Interconnects Embedded Integrated Management Interface Up to 16 Single IP Domain Size Broad Range of Cluster Members Investment Protection and Future-Proofing Range of Price/Performance Options 78 Cisco Systems (Schweiz) AG 26

27 Solutions SOHO Small Branch Office Medium Business 79 Simple LAN Infrastructure 1548U Micro Switch 1548U 10/100 Micro Switch 10/100 Eight ports Dedicated 10/100 autosensing Fast Ethernet on all ports Low-cost and therefore ideal for price sensitive customers Lifetime limited warranty 80 Simple LAN Infrastructure Target customers: Small office/home office (0-20) Little or no growth in user community expected Ease of installation & maintenance a requirement Provides your customer with: Cheap and Cheerful basic LAN connectivity $395 List 81 Cisco Systems (Schweiz) AG 27

28 Small Branch Office LAN 1538M Micro Hub 10/ M 1548M Micro Hub Switch 10/100 10/100 OR 1548M Micro Switch 10/100 Eight 10/100 auto-sensing switched ports ports Managed High performance Embedded Managed Web-based management Stackable Embedded Web-based management Support for port-based VLANs 82 Small Branch Office LAN Target customers: Branch office (0-20 users) Management from central site a requirement Little or no growth in user community expected Provides your customer with: High performance LAN at an ultra low cost 83 Medium Sized LAN (21-50 User) Catalyst Fast Hub models with 12 or 24 10BaseT ports and choice of 2 100BaseT uplinks Full Low duplex cost, 12 operation or 24 ports, on all Ethernet autosensing and Fast 10/100 Ethernet Fast ports Ethernet Auto-negotiation Provides 100 Mbps on 100BaseTX aggregate ports throughput for selecting half-and-full duplex Congestion Copper and control fiber uplink featuresmodules + integrated stacking interconnections Web-based Powerful, web-based network management Lifetime limited warranty 84 Cisco Systems (Schweiz) AG 28

29 Medium Sized LAN ( User) Catalyst 2900 Catalyst 3500 Exceptional performance: 10-Gbps 3.2-Gbps switch fabric, 7.5 million pps forwarding rate Revolutionary Cisco switch clustering & and flexible GigaStack stacking technology Best-in-class Cisco IOS: provides management: bandwidth Web-based aggregation, CVSM intra-switch 2.0, CiscoWorks2000 VLAN Cisco support, IOS hot swap software modules provides and networked end-to-end multimedia integration support Best-in-class management: Web-based CVSM 2.0 Lifetime Limited Warranty Lifetime Limited Warranty 85 On the Horizon. Wireless LAN Products 86 Wireless LAN Products Cisco Acquires Aironet Wireless Comms 1st Product under Cisco brand Launch scheduled for early May For more information go to : 87 Cisco Systems (Schweiz) AG 29

30 Presentation_ID 88 Cisco Systems (Schweiz) AG 30