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(Click for frequent words.) 70 Cisco IOS XR 67 Cisco XR 67 ScreenOS 65 Juniper JUNOS 65 ATCA blade 63 Virtual Chassis 63 NX OS 63 CloudLinux OS 63 Cisco IOS Software 63 IOS XE 63 ACUCOBOL GT 62 OpenScape Voice 62 TigerLogic XDMS 62 ZebOS 62 z OS V#.# [001] 62 FastIron SuperX 62 NexusWare Core 62 PlateSpin Orchestrate 62 JUNOS ® 62 VoIP softswitch 62 HDS arrays 62 Nitix 62 XORP 62 CUCM 61 OpenStack cloud 61 Cisco IOS ® 61 PIX firewall 61 Linux kernels 61 Forefront UAG 61 CoreDirector 61 MeshConnex 61 Data OnTap 61 FTOS 61 Catalyst switches 61 Cisco ISR 61 iNSP 61 6WINDGate software 61 WANScaler 61 Cisco Nexus #V 61 Borderless Networks architecture 61 Force# switches 61 Citrix NetScaler 61 nCite 61 Cisco ONS 61 GateD 61 SelfReliant 61 mainline Linux kernel 61 Symmetrix V Max 61 embeddedMIND 61 TCP acceleration 60 Cisco Carrier Routing 60 VN Link 60 iGateway 60 Vo Fi 60 Nexus #V 60 IBM z VM 60 JUNOS software 60 Inkra 60 F Secure SSH 60 ExtremeXOS ® 60 Hyper V virtualisation 60 ftServer 60 Core Router 60 NexusWare 60 FabricPath 60 Enea LINX 60 Intelligent Switching 60 NetScreen 5GT 60 multi pathing 60 iDiSX 60 FortiOS 60 multichassis 60 BigIron 60 multipathing 60 QNX Neutrino 60 ONTAP 60 Windows Embedded Handheld 60 XenClient 60 HP ProCurve ONE 59 FortiSwitch 59 POWER5 microprocessor 59 3PAR InServ Storage Servers 59 Data ONTAP GX 59 KVM virtualization 59 Tensilica processors 59 SSA Baan 59 Snort intrusion detection 59 Symantec i3 59 vShield 59 zEnterprise System 59 Unisys ES# 59 RedHat Linux 59 H VPLS 59 JUNOS 59 i5/OS V#R# 59 Solaris Unix 59 AnyConnect 59 Intel Itanium architecture 59 Enterasys Matrix 59 SLES9 59 IBM Tivoli Netcool 59 Cisco CRS 1 59 ARM TrustZone 59 Atheros chipset 59 3GPP IMS 59 ServerIron 59 uniquely architected 59 hypervisor virtualization 59 WANJet 59 TCP IP offload 59 HP BladeSystem Matrix 59 OpenFabrics Enterprise Distribution OFED 59 Load Balancer 59 Mobiliti 59 VPN router 59 stackable switches 59 embedded processor cores 59 VMware vMotion 59 stackable switch 59 IBM zSeries mainframes 59 NetScaler MPX 59 Prestera DX 59 nPulse 59 GemFire Enterprise 59 #.#.# Linux kernel 59 Pattern Matching 59 Foundry FastIron 59 Sun Netra 59 InterNiche 59 #/#G [002] 59 NetApp Data ONTAP 59 NetApp filers 59 PowerQUICC III 59 Xen virtualization 58 FICON connectivity 58 #Gb Fibre Channel 58 iShaper 58 Marathon everRun 58 Windows Azure AppFabric 58 ETERNUS storage 58 SiteProtector 58 MetroMesh 58 HP NonStop server 58 Unify Shared Edition 58 SAN Copy 58 Cirrus Softswitch 58 ADO.Net 58 binary compatible 58 Egenera PAN Manager 58 NGFW 58 IPv#/v# 58 ConfD 58 VERITAS Storage Foundation 58 fault tolerant architecture 58 SOLUTION Update 58 IBM eServer BladeCenter 58 NetIron XMR 58 datacenter automation 58 Brocade FastIron 58 vSMP Foundation Standalone 58 iMB 58 3Com VCX 58 1.X 58 Wyse VDA 58 symmetric multiprocessing SMP 58 #G ATCA 58 AppFabric 58 Xiotech Magnitude 3D 58 Stratus ftServer 58 Promentum ATCA 58 AIX Linux 58 Trusted Solaris 58 SCOx 58 DVCS 58 StarFabric 58 Jaluna OSware 58 NEBS compliant 58 SANtricity 58 SIParator 58 NexTone SBC 58 NetApp FAS 58 PowerVM virtualization 58 aggregation switches 58 Netscaler 58 pSeries servers 58 AppFlow 58 HyperShare 58 FreePBX 58 midrange arrays 58 UBDR Gold 58 #Gbps Ethernet [001] 58 eServer p5 58 SoftGrid Application Virtualization 58 INTEGRITY Secure Virtualization 58 Voltaire Grid Director 58 Virtual HBA 58 Juniper routers 58 CloudBurst 58 MetaFrame Presentation Server 58 ArchestrA technology 58 Fireware Pro 58 Cisco IOS 58 NBBS 58 #Gbit Ethernet 58 1U rack mountable 58 Novell SLES 58 FIPS compliant 58 MVTS Pro 58 HP NonStop 58 EMC CLARiiON AX# 58 JBoss jBPM 58 Cluster Server 58 Windows Embedded POSReady 58 source Xen hypervisor 58 Brekeke PBX 58 converged IP MPLS 58 MirrorView 58 EAP FAST 58 VMware VMsafe 58 HP Serviceguard 58 CDMA femtocell 58 WAN optimization appliance 58 Xen virtualisation 58 HiPath OpenScape 58 OSGi framework 58 iNAV 58 ProxySG Virtual Appliance 58 Java APIs 58 ThinkCAP 58 ZigBee protocol 58 pNFS 58 Unisys ES# server 57 BlackDiamond #K 57 #.#-# WiMAX 57 IBM zSeries mainframe 57 IPSec encryption 57 #zl 57 Storage Router 57 Ixia IxNetwork 57 SIP Servlet 57 vApp 57 Novell PlateSpin 57 Neoteris IVE 57 VERITAS Cluster Server 57 CentOS Linux 57 Xandros Server 57 symmetric multiprocessing 57 MACsec 57 SS7 signaling 57 VPN firewall 57 iSCSI adapters 57 IPPBX 57 ActiveStor 57 BladeCenter H 57 HiveManager 57 FC HBAs 57 Kbox 57 XNV 57 Ciena ActivFlex 57 Tivoli Provisioning Manager 57 Packet Core 57 Lasser Raab 57 iSN 57 OpenOnload 57 vFabric 57 Arista EOS 57 Thunder #V 57 Enterasys switches 57 Windows XPe 57 Fault tolerant 57 Gigabit Ethernet switches 57 TIBCO Rendezvous 57 Secure Desktop 57 #Gbit s Ethernet [002] 57 CMTSs 57 IBM zSeries 57 xStack 57 FASTPATH 57 InsydeH2O 57 TPSDA 57 Mercury QuickTest Professional 57 POWER5 processor 57 Nortel ERS 57 VPN concentrators 57 Maxxan 57 Pervasive PSQL Summit 57 CounterPath softphone 57 Dell PowerEdge M# 57 Oracle RAC 57 WMP# [002] 57 Adaptive Threat Defense 57 Nortel Common Photonic 57 mSwitch 57 Juniper Networks routers 57 VPN Firewall 57 Interaction SIP Proxy 57 Asterisk telephony 57 XVM 57 PowerPath 57 OpenFrame 57 ATCA chassis 57 Agilent N2X 57 RadiSys ATCA 57 Stratus fault tolerant 57 Juniper SSL VPN 57 3Leaf V 57 IxN2X 57 Aricent ISS 57 iSCSI protocol 57 HBAnyware 57 femtocell gateway 57 TCP IP networking 57 Gbps InfiniBand 57 embedded hypervisor 57 #.#.#/ZigBee 57 GoAhead SelfReliant 57 SS#/C# 57 Juniper SRX 57 StoneGate IPS 57 NetApp SAN 57 3Com Router 57 DevRocket 57 RTOSs 57 CA Unicenter NSM 57 NetWin 57 CLARiiON CX3 57 rearchitected 57 Gbit Ethernet 57 Btrfs file 57 source PostgreSQL database 57 Session Initiation Protocol 57 Asterisk SCF 57 Juniper Networks EX 57 ISR G2 57 e# cores 57 iServer 57 CiscoWorks 57 TrafficShield 57 Ext4 file 57 OpenSAFfire 57 LightSoft 57 MXV# 57 PoE switches 57 Intel QuickAssist 57 fault tolerant server 57 IPoDWDM 57 Pyxos 57 IPnexus 57 ProLiant server 57 ExpressModule 57 OpenFabrics 57 CS MARS 57 Generic Framing Procedure GFP 57 Brocade BigIron RX 57 LiquidIQ 57 IBM eServer xSeries servers 57 failover clustering 57 Data ONTAP ® 57 SDH PDH 57 HPC clustering 57 VistaFoundation 57 VPN Cubed 57 OfficeConnect 57 Citrix XenDesktop TM 57 NetScaler SDX 57 IPv6 routing 57 iWarp 57 Siemens SURPASS 57 APOXI 57 OSSs 57 JBoss Messaging 57 XFP modules 57 productized 57 iSeries pSeries 57 PlateSpin Migrate 57 Nakina Network 57 FlexPod 57 ExaScale E Series 57 UltraScale 57 Teamcenter PLM 57 softswitching 57 QFabric 57 Windows VistaTM 57 2Gbps Fibre Channel 57 NetVanta routers 57 Application Server #g 57 eServer i5 57 NetIron #G 57 kernel #.#.# 57 Netcool Precision 57 Nterprise Linux Services 56 NAS gateway 56 BounceBack Professional 56 ProCurve switches 56 Cassatt Active Response 56 FlexTCA 56 NEC ExpressCluster 56 3Com NBX 56 Spirent Avalanche 56 FIPS #-# compliant 56 Intel IXP#XX 56 SR IOV 56 vCenter Server 56 Trillium LTE 56 6U cPCI 56 Cisco Wireless LAN 56 Certive 56 VMWare vSphere 56 GuardianOS 56 WLan 56 Active Directory authentication 56 VPN routers 56 CallManager 56 CICS Transaction Server 56 IKEv2 56 4Gbit/sec 56 Ethernet TCP IP 56 Veritas Backup Exec 56 VirtualIQ Pro 56 IronPoint 56 Brocade switches 56 IP Anycast 56 Avaya VENA 56 Redhat Linux 56 Hyper V virtualization 56 Avantellis 56 #G Ethernet switches 56 RoamAbout 56 HP UX #i v2 56 BlueCat Linux 56 virtualized datacenter 56 SM# AH 56 Virsto One 56 #Gb s Fibre Channel 56 M#i [002] 56 Juniper MX# 56 multicore architectures 56 FirePass SSL VPN 56 GlusterFS 56 wireless intrusion prevention 56 Brocade DCX 4S 56 EMC Invista 56 Dynamic Datacenter 56 SilkPerformer 56 Signalware 56 virtualises 56 FastIron GS 56 Infranet 56 IBM AIX Unix 56 Jungo OpenRG 56 distributed caching 56 Remote Desktop Protocol 56 Gigabit Ethernet uplink 56 Object Storage 56 iShared 56 HYDRAstor HS8 56 eServer BladeCenter 56 Oracle Database Lite 56 kdelibs 56 SkyX 56 virtualised servers 56 NEC UNIVERGE 56 Gigabit PON GPON 56 Enea OSE 56 Oracle 9i database 56 CPU# [001] 56 iWARP 56 Spirent Landslide 56 LSI MegaRAID 56 ARMv6 56 Jaluna 56 PowerQUICC III processor 56 Covast EDI Accelerator 56 iSeries servers 56 Cisco TrustSec 56 VMWare ESX 56 ISRs 56 Aepona Causeway 56 #gR# 56 IBM Power6 56 iSCSI HBAs 56 NearStore 56 DirectFLOW 56 WEPOS 56 LANShield Switch 56 uBR# 56 Quick Path Interconnect 56 Ethernet Extender 56 Flashwave 56 multiprocessor architecture 56 Myri #G 56 FWSM 56 VisiBroker 56 SPARC# 56 Mono runtime 56 ARM7TDMI processor 56 QuickPath 56 GeoCluster 56 3Tera AppLogic 56 Optimizeit 56 Oracle9i Application Server 56 interprocess communications 56 IBM WebSphere BEA WebLogic 56 Sun UltraSPARC 56 Linux kernel #.#.#.# 56 Xen VM 56 NetApp SnapMirror 56 Gigabit interfaces 56 sipXecs 56 CommandCenter 56 Celerra NSX 56 Multiservice Access 56 Diameter protocol 56 MIPS processors 56 NetApp FAS# [002] 56 BEA WebLogic Portal 56 Forefront Unified 56 Enea Accelerator Platform 56 Cisco IP NGN 56 rPath Linux 56 Juniper EX 56 4Gbps Fibre Channel 56 symmetrical multiprocessing 56 System Storage DS# 56 Soapstone PNC 56 MaxDB 56 Virtual Fabric 56 HP ProCurve switches 56 vMotion 56 Message Passing 56 WSO2 ESB 56 U4EA Fusion 56 Deployment Solution 56 Ximian Red Carpet 56 Emulex HBAs 56 IPMI v#.# 56 IronWare 56 IBM POWER6 56 IONA Artix 56 Solaris Trusted Extensions 56 GateIn 56 #.#aq 56 NAS gateways 56 RPC DCOM 56 O subsystem 56 eServer p# 56 SuSE Linux Professional 56 Intransa StorStac 56 VMware GSX Server 56 Linux #.#.# kernel 56 Netweaver 56 Singl.eView 56 Data ONTAP 7G 56 NexTone MSC 56 Actel FPGAs 56 sHype 56 PlateSpin Forge 56 IPV6 56 MicroTCA TM 56 Brocade Fibre Channel 56 Freescale MPC# 56 8GFC 56 MTOSI 56 HP PolyServe 56 MPC# processor 56 #n APs 56 ADTRAN NetVanta 56 zOS 56 pSeries iSeries 56 Freescale QorIQ 56 WebSphere Message Broker 56 Parallels Virtuozzo Containers 56 8G Fibre Channel 56 Infiniband switches 56 AIX 5L 56 MokaFive Suite 56 SIPxchange ECS 56 Quidway routers 56 HP Integrity NonStop 56 WAN emulation 56 LSI Engenio 56 Fujitsu PRIMEQUEST 56 #GbE connectivity 56 Multilayer Director 56 Cisco AVVID 56 Common Language Runtime 56 Session Initiated Protocol SIP 56 fault tolerant computing 56 Etherjack 56 TCP IP Offload Engine 56 DataSynapse GridServer 56 NetworkManager 56 SonicOS 56 GSX Server 56 Oracle 9i 56 InfiniBand clusters 56 QNX Neutrino RTOS 56 BladeSystem Matrix 56 VMware server virtualization 56 Layer 2/Layer 3 56 stateless offload 56 IPv4 IPv6 56 pluggable module 56 IPsec VPN 56 Symmetra PX 56 DCX Backbone 56 SAS expanders 55 IBM eServers 55 CommandCentral Service 55 WAN router 55 SWsoft Virtuozzo 55 PowerVM 55 midrange disk arrays 55 InterWatch 55 Serial RapidIO Gen2 55 Cisco AON 55 version #.#.#.# [003] 55 SIP Session Initiation Protocol 55 fpgas 55 Cisco CallManager 55 ASR# 55 Klocwork Insight 55 NetIron 55 M7i 55 #GbE interfaces 55 Intel Itanium processors 55 SIPxchange 55 VADI 55 Coraid EtherDrive 55 Application Acceleration Blueprints 55 IBM POWER5 55 Perforce Server 55 Verizon IP Trunking 55 Gigabit Ethernet uplinks 55 Solaris Zones 55 WebLogic Integration 55 Viridian hypervisor 55 #.#X supplicant 55 WiMAX Forum NWG 55 HyperTransport interconnect 55 Symmetrix DMX# 55 ProLiant Essentials 55 DataCore SAN 55 PANTA Systems 55 ARM9 processor 55 Micromuse Netcool 55 Omni3 55 zEnterprise 55 Quartus II 55 GigaSpaces XAP 55 Internetwork Operating System 55 Timbuktu Pro 55 Linksys WRT#GS 55 NPIV 55 LightGAIN 55 Power4 processors 55 Logical Domains 55 optimizing compiler 55 SmartDeploy 55 rackmount server 55 UNIVERGE 55 Cisco ISR G2 55 FCoE switches 55 StorageLink 55 logical partitioning 55 Oracle9i 55 NetIron MLX Series 55 NFP #xx 55 AMCC PowerPC 55 Citrix XenServer virtualization 55 openMosix 55 ActiveScale 55 Xen hypervisor 55 Logical Volume Manager 55 iFCP 55 Xen KVM 55 ExpEther 55 BlueZ 55 P# processor 55 NEBS certified 55 Windows LINUX 55 AcceleNet 55 Veritas Cluster Server 55 HP Oracle Exadata 55 PackageKit 55 Ingate SIParator 55 NonStop server 55 NVIDIA nTune 55 Intel Nehalem processors 55 SFN#F 55 NetApp FAS storage 55 RELvos 55 Sigtran 55 PacketLogic PL# [002] 55 MontaVista Linux Professional 55 CallManager Express 55 Aironet 55 VRRP 55 TI DSP BIOS 55 AX#i 55 LatticeEC 55 ETX #A 55 Solaris Containers 55 Dell EqualLogic SAN 55 LEGATO NetWorker 55 #.#b wireless LAN 55 CommandCenter NOC 55 trixbox CE 55 Fastpath 55 XO SIP 55 HotZone Duo 55 #.x [002] 55 HP BladeSystem c# 55 NAT Traversal 55 NetMail 55 RevChain 55 NET CLR 55 BlueArc Titan 55 VMware ESX hypervisor 55 ActiveMatrix 55 Infor ERP LX 55 NetApp FAS# [001] 55 Services zl Module 55 Multiservice Edge 55 #Gbps optical [001] 55 virtualisation hypervisor 55 Citrix Provisioning Server 55 Microware OS 9 55 CRS 1s 55 H3C S# [001] 55 Power6 chip 55 NSLU2 55 multiservice switching 55 #GbE switches 55 componentised 55 Bluejet 55 SecureStack 55 Gbps interfaces 55 VMware virtualisation 55 vShield Zones 55 EMC SnapView 55 3CX IP PBX 55 FastCGI 55 Zend Core 55 multicore processing 55 UMTS femtocell 55 Ubigate 55 drop multiplexer ROADM 55 PolyServe Matrix Server 55 NaviCloud 55 LTE HSPA + 55 MAC OS X 55 Intel vPro Technology 55 multicore SoCs 55 XRN 55 BladeEngine 55 IBM BladeCenter chassis 55 iDataPlex server 55 NET framework 55 ZyAIR B 55 Aonix PERC 55 Power4 + 55 Juniper Networks IDP 55 AltiVec 55 C#x + DSP 55 AMS# [001] 55 TDMoIP 55 Adaptec RAID 55 softswitch architecture 55 Hyper threading 55 ZENworks Configuration Management 55 RestoreIT 55 Netcool suite 55 PRO/# 55 IP PBXes 55 IBM WebSphere Application Server 55 metro DWDM 55 Firewall VPN 55 PolicyNet 55 TrustSec 55 Cortex A9 processors 55 #.#af compliant 55 Synchronous Ethernet 55 FileData Classifier 55 x# virtualization 55 IEEE #.#x [002] 55 RedHawk Linux 55 virtualization hypervisor 55 EFCM 55 ModSecurity 55 OpenPower 55 BigIron RX 55 MSBG 55 Primergy servers 55 WXC platforms 55 Teknovus EPON 55 RTLinuxPro 55 mainline kernel 55 #Gbit/sec 55 SensorPort 55 uClinux 55 Windows NT/#/XP 55 cable modem termination 55 MicroTCA platforms 55 MIPS processor 55 WLAN switches 55 v#.# firmware [001] 55 OSE RTOS 55 FlexRay controller 55 PowerQuicc 55 Skybox Assure 55 LLDP MED 55 FastIron Edge X 55 DB2 UDB 55 Carrier Routing System 55 iSeries server 55 Gb s Fibre Channel 55 CommVault QiNetix 55 vSMP Foundation 55 x#/x# 55 TimeScale 55 VirusScan Enterprise 55 WiMAX GSM EDGE 55 MetroCluster 55 Nuxeo EP 55 O Virtualization IOV 55 hiT 55 Mobilinux 55 Anycast 55 Integrity rx# 55 CA ARCserve Replication 55 RISC DSP 55 XLink 55 Enomalism 55 ServerIron ADX 55 WebSphere middleware 55 WebVPN 55 femtocell ecosystem 55 Shunra VE 55 Cisco CallManager Express 55 IBM xSeries servers 55 XKMS 55 Intrusion prevention 55 Windows Server SQL Server 55 SQL Server Visual Studio 55 Oracle9i RAC 55 LDAP authentication 55 IBM S/# 55 iMAP 55 HP Openview 55 Enterprise MRG 55 autoconfiguration 55 Delphi Prism 55 iStoRA 55 GlobalTRACS 55 Virtuozzo Containers 55 webMethods ESB 55 CloudStack 55 AXI TM 55 Concurrent RedHawk Linux 55 VMware Xen 55 VMware hypervisors 55 ShoreTel Unified Communications 55 VLX Developer 55 vStorage 55 IBM BladeCenters 55 UltraBac 55 Oracle VM VirtualBox 55 VMware virtualization software 55 EFT Server 55 Nortel BCM 55 hyperthreading 55 MultiCore 55 Logi ETL 55 High Availability HA 55 ReplicatorX 55 Windows XP Embedded XPe 55 EssentiaESP 55 GridServer 55 SANbox 55 Storage Nodes 55 EMC PowerPath 55 AES encryption algorithm 55 Ciena CN 55 Transitive QuickTransit 55 RangeBooster N 55 reconfigurable optical 55 OEMed 55 SpeedCore 55 IEEE #.#d 55 Aumtech 55 SANWatch 55 stateful inspection firewall 55 Mercury WinRunner 55 JITC certified 55 NVIDIA CUDA TM 55 Adaptive Threat Management 55 Socket AM2 + 54 NetApp NAS 54 Concurrent iHawk 54 Backup Appliance 54 configurable processor 54 sentitO 54 dataplane 54 Dynamic Tracing 54 NetFront Browser v#.# 54 Secure Router 54 Asterisk IP PBX 54 System VDC OS 54 Synopsys Synplify Pro 54 SIMD instructions 54 Foundry ServerIron 54 Novell NetWare 54 WebUI 54 OCS R2 54 Application Oriented 54 SIP PBX 54 IP VPN MPLS 54 Tolapai 54 Citrix StorageLink 54 BroadSoft BroadWorks 54 4Gbps 54 IBM eServer pSeries 54 iSCSI initiators 54 BEA Systems WebLogic 54 Consortium ISC 54 LPARs 54 heterogeneous SANs 54 GateD NGC 54 IPNET 54 NetMotion Wireless Mobility XE 54 Integrity Clientless Security 54 GPON EPON 54 Storage Servers 54 Fibre Channel adapters 54 productised 54 IBM OpenPower 54 HP StorageWorks XP 54 Flash Remoting 54 XenServer ™ 54 dynamically reconfigurable 54 IP Multicast 54 ProVision ASIC 54 OpenSMB 54 intercompany Cisco TelePresence 54 Packeteer PacketShaper 54 standalone hypervisor 54 port #G Ethernet 54 HP ProLiant Essentials 54 ZigBee mesh 54 Tcat Server 54 LSB compliant 54 SessionSuite 54 Juniper T# 54 TrustZone 54 VMware Fault Tolerance 54 ES# server 54 USBConnect 54 WRT#G 54 MontaVista DevRocket 54 ARRIS DOCSIS 54 Channel HBAs 54 SunOS 54 PRIMEPOWER servers 54 VDC OS 54 AIX Solaris 54 OpenScape UC Server 54 QoS mechanisms 54 virtualised desktop 54 AdvancedTCA chassis 54 PowerConvert 54 Bare Metal Restore 54 SPARC Enterprise servers 54 Hyper V Server 54 DataDirect XML Converters 54 Cisco Compatible Extensions 54 AiroPeek NX 54 IBM ThinkPad notebooks 54 Wavelength Division Multiplexing WDM 54 fault tolerant servers 54 BlueSpace 54 XenEnterprise v4 54 multitenancy 54 Contivity 54 OMA compliant 54 rdesktop 54 SANavigator 54 CLARiiON networked storage 54 Lotus Instant Messaging 54 ISaGRAF 54 Digi Connect ME 54 rack mount server 54 SIGTRAN 54 SANTap 54 SmartEdge platform 54 Net Compact Framework 54 autodiscovery 54 multilayer switches 54 Hitachi EPON