Dell Networking X1000 And X4000 Series Switches User Guide
Dell Networking X1000and X4000 Series SwitchesUser GuideFILE LOCATION: C:\Users\gina\Desktop\Checkout new\Dell Astute\UserGuide\Dell AstuteCover.fmDELL CONFIDENTIAL – PRELIMINARY 8/9/16 – FOR PROOF ONLYTemplate Last Updated -03/06/2010
FILE LOCATION: C:\Users\gina\Desktop\Checkout new\Dell Astute\User Guide\Dell AstuteCover.fmNotes, Cautions, and WarningsNOTE: A NOTE indicates important information that helps you make better use ofyour computer.CAUTION: A CAUTION indicates either potential damage to hardware, or loss ofdata and tells you how to avoid the problem.WARNING: A WARNING indicates a potential for property damage, personalinjury, or death. Copyright 2016 Dell Inc. All rights reserved. This product is protected by U.S. and internationalcopyright and intellectual property laws. Dell and the Dell logo are trademarks of Dell Inc. in theUnited States and/or other jurisdictions. All other marks and names mentioned herein may betrademarks of their respective companies.August 2016P/NRev. A06DELL CONFIDENTIAL – PRELIMINARY 8/9/16 – FOR PROOF ONLY
FILE LOCATION: C:\Users\gina\Desktop\Checkout new\Dell Astute\UserGuide\Dell AstuteUG PrintTOC.fmTable of ContentsTable of Contents1Preface2Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MAC Address Capacity Support .Layer 2 Features. . . . . . . . . . . . . . . . . . . . .18Quality of Service Features. . . . . . . . . . . . . . .Security Features19. . . . . . . . . . . .21. . . . . . . . . . . . . . .23. . . . . . . . . . . . .24. . . . . . . . . . . . . . . . . . . .27Device Management Features.Hardware Description . . . . . . . . . . . . . .33. . . . . . . . . . . . . . . . . . . . .34Device Structure . . . . . . . . . . . . . . . . . . . .35. . . . . . . . . . . . . . . . .36. . . . . . . . . . . . . . . . . . . . . . .36. . . . . . . . . . . . . . . . . . . . . . . . . . .37Managed Mode ButtonReset ButtonFans1517Spanning Tree Protocol FeaturesDevice Models .13. . . . . . . . . . . .VLAN Supported Features .33LED Definitions. . . . . . . . . . . . . . . . . . . . .Contents373
FILE LOCATION: C:\Users\gina\Desktop\Checkout new\Dell Astute\UserGuide\Dell AstuteUG PrintTOC.fmPower Supplies4Using the GUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Starting the Application. . . . . . . . . . . . . . . . .Understanding the Interface .Dashboard. . . . . . . . . . . . . . . . . . . . . . . .45Field Definitions. . . . . . . . . . . . . . . . . .45. . . . . . . . . . . . . . . . . . .46. . . . . . . . . . . . . . . . . . . . .47Common GUI Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4849Overview . . . . . . . . . . . . . . . . . . . . . . . .50Interfaces . . . . . . . . . . . . . . . . . . . . . . . .51. . . . . . . . . . . . . . . . . . .53. . . . . . . . . . . . . . . . . . . . . . . .55Switch Information .Resources. . . . . . . . . . . . . . . . . .57. . . . . . . . . . . . . . . . . . . . . . .58Recent Logged EventsActive AlertsPorts and VLANs. . . . . . . . . . . . . . . . . . . . .Configuration Wizards .4Contents4444Information ButtonsDashboard43. . . . . . . . . . . . . .Saving Configurations539. . . . . . . . . . . . . . . . .5960
FILE LOCATION: C:\Users\gina\Desktop\Checkout new\Dell Astute\UserGuide\Dell AstuteUG PrintTOC.fm6Switch Management. . . . . . . . . . . . . . . .71IP Addressing Overview . . . . . . . . . . . . . . . .71. . . . . . . . . . . . . . . . . . .72IPv4 Addressing. . . . . . . . . . . . . . . . . . . . .73IPv6 Addressing. . . . . . . . . . . . . . . . . . . . .75Switch InformationFile Update and Backup . . . . . . . . . . . . . .98. . . . . . . . . . . . . . . . . .100Domain Name System (DNS)Time SynchronizationManagement Security .7Logs and AlertsOverview .Logs110. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .125. . . . . . . . . . . . . . . . . . . . . . . .125. . . . . . . . . . . . . . . . . . . . . . . . . . .126Login History .Statistics .127. . . . . . . . . . . . . . . . . . .Statistics and DiagnosticsMonitoring .127. . . . . . . . . . . . . . . . . . . . . .Remote Log Servers883. . . . . . . . . . . . . . . . . . . . . . . . .129. . . . . . . . . . . . . . . . . . . . . . .129. . . . . . . . . . . . . . . . . . . . . . . .135Diagnostics. . . . . . . . . . . . . . . . . . . . . . .Contents1405
FILE LOCATION: C:\Users\gina\Desktop\Checkout new\Dell Astute\UserGuide\Dell AstuteUG PrintTOC.fm9Network Administration: VLAN. . . . . . .143VLAN Overview. . . . . . . . . . . . . . . . . . . .143Standard VLAN . . . . . . . . . . . . . . . . . . . .147. . . . . . . . . . . . . . . . . . . . . .156Voice VLAN .10 Network Administration: Port SettingsPorts.161. . . . . . . . . . . . . . . . . . . . . . . . . .161Address Tables .UDLD. . . . . . . . . . . . . . . . . . . .173. . . . . . . . . . . . . . . . . . . . . . . . . .17511 Network Administration: Spanning Tree and LAG185Spanning Tree. . . . . . . . . . . . . . . . . . . . .Link Aggregation (LAG). . . . . . . . . . . . . . . .18519612 Network Administration: Link Layer DiscoveryProtocol (LLDP) . . . . . . . . . . . . . . . . . . 207Overview . . . . . . . . . . . . . . . . . . . . . . .LLDP Properties. . . . . . . . . . . . . . . . . . . .LLDP Port Settings. . . . . . . . . . . . . . . . . . .209210. . . . . . . . . . . . . . . . . . .211Neighbors Information .6Contents208. . . . . . . . . . . . . . . . .MED Network PolicyMED Port Settings207. . . . . . . . . . . . . . . .213
FILE LOCATION: C:\Users\gina\Desktop\Checkout new\Dell Astute\UserGuide\Dell AstuteUG PrintTOC.fm13 Network Administration: Route Settings 215System Routing Mode. . . . . . . . . . . . . . . . . .215IPv4 Route Settings. . . . . . . . . . . . . . . . . . .216IPv6 Route Settings. . . . . . . . . . . . . . . . . . .22014 Network Administration: Quality of Service 227Overview .227. . . . . . . . . . . . . . . . . . . . . . . .Global Settings. . . . . . . . . . . . . . . . . . . . .228QoS Mapping. . . . . . . . . . . . . . . . . . . . . .233QoS Statistics. . . . . . . . . . . . . . . . . . . . . .24215 Network Administration: Security .Dot1x Authentications .245. . . . . . . . . . . . . .255. . . . . . . . . . . . . . . . . . . . . .256Dynamic ARP Inspection (DAI)ACL and ACE .245. . . . . . . . . . . . . . . . .Storm Control Configuration .Port Security . . . . . . . . . . . . . . . .258. . . . . . . . . . . . . . . . . . . . . .26116 Network Administration: SNMP Monitoring 277SNMP Overview . . . . . . . . . . . . . . . . . . . .SNMP Global Parameters .View Settings277. . . . . . . . . . . . . . .279. . . . . . . . . . . . . . . . . . . . . .281Contents7
FILE LOCATION: C:\Users\gina\Desktop\Checkout new\Dell Astute\UserGuide\Dell AstuteUG PrintTOC.fmAccess Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .283. . . . . . . . . . . . . . . . . . . . . .284User Security Model .CommunitiesNotification Filter. . . . . . . . . . . . . . . . . . .Notification Recipients. . . . . . . . . . . . . . . .17 Network Administration: MulticastOverview .282286287. . . .289. . . . . . . . . . . . . . . . . . . . . . .289. . . . . . . . . . . . . . . . . .291. . . . . . . . . . . . . . . . . . . .292Global Parameters .Multicast GroupMulticast Forward All. . . . . . . . . . . . . . . . .293. . . . . . . . . . . . . . . . . . . .294. . . . . . . . . . . . . . . . . . . . .297IGMP Snooping.MLD SnoopingUnregistered MulticastMulticast TV VLAN . . . . . . . . . . . . . . . .298. . . . . . . . . . . . . . . . . .29918 Network Administration: DHCP Snooping andDHCP Relay . . . . . . . . . . . . . . . . . . . . . . 301DHCP SnoopingDHCP Relay .8Contents. . . . . . . . . . . . . . . . . . . .301. . . . . . . . . . . . . . . . . . . . . .306
FILE LOCATION: C:\Users\gina\Desktop\Checkout new\Dell Astute\UserGuide\Dell AstuteUG PrintTOC.fm19 Network Administration: DHCP ServerOverview .309309. . . . . . . . . . . . . . . . . . . . . . . .DHCP Server Properties . . . . . . . . . . . . . . . .310. . . . . . . . . . . . . . . . . . . . . .311. . . . . . . . . . . . . . . . . . . . . . .313Network PoolStatic HostsAddress Binding .315. . . . . . . . . . . . . . . . . . . .Excluded Addresses .316. . . . . . . . . . . . . . . . . .20 Network Administration: Power Management 317Green Ethernet .Power Over Ethernet (PoE)Using the CLI . . . . . .323. . . . . . . . . . . . . . . . . . . . .327327. . . . . . . . . . . . . . . . . . . . . .CLI Command ConventionsIPv6 Address Conventions .330. . . . . . . . . . . . . . .Accessing the Device Through the CLI23 CLI320. . . . . . . . . . . . . . .21 Network Administration: sFlow .22 Using the CLI317. . . . . . . . . . . . . . . . . . . . . . . . . . . . .331. . . . . . . . . . . . . . .331. . . . . . . . . . . . . . . . . . . . . . . . . . . . .333clear counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333Contents9
FILE LOCATION: C:\Users\gina\Desktop\Checkout new\Dell Astute\UserGuide\Dell AstuteUG PrintTOC.fmclear logging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333configure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334copy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334crypto certificate generate . . . . . . . . . . . . . . . . . . . . . . . 338crypto certificate import. . . . . . . . . . . . . . . . . . . . . . . . . 340crypto certificate request . . . . . . . . . . . . . . . . . . . . . . . . 343crypto key generate dsa . . . . . . . . . . . . . . . . . . . . . . . . . 345crypto key generate rsa . . . . . . . . . . . . . . . . . . . . . . . . . 346crypto key import. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 347debug-mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 349delete . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 350dir . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 350do . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 351enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 353end . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 353exit (EXEC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354exit (Configuration) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 355help. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 355interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 356ip address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 357ip default-gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 358ip https certificate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 359ip routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 360ip ssh server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 361lldp transmit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 362lldp receive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363login . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36410Contents
FILE LOCATION: C:\Users\gina\Desktop\Checkout new\Dell Astute\UserGuide\Dell AstuteUG PrintTOC.fmping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 364power inline legacy support disable . . . . . . . . . . . . . . . 368power inline usage-threshold. . . . . . . . . . . . . . . . . . . . . 368reload . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 369show bootvar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 371show crypto certificate. . . . . . . . . . . . . . . . . . . . . . . . . . 372show crypto key. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 373show interfaces counters . . . . . . . . . . . . . . . . . . . . . . . . 374show interfaces status . . . . . . . . . . . . . . . . . . . . . . . . . . 377show ip dhcp tftp-server . . . . . . . . . . . . . . . . . . . . . . . . 378show ip https . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 379show ip interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 380show power inline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 381show power inline consumption . . . . . . . . . . . . . . . . . . 384show running-config . . . . . . . . . . . . . . . . . . . . . . . . . . . 385show system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 386show tech-support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 387show version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 388show vlan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 388spanning-tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 390username . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 391vlan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 392write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39424 Getting Help . . . . . . . . . . . . . . . . . . . . .Contacting Dell. . . . . . . . . . . . . . . . . . . . .Locating Your System Service Tag. . . . . . . . . . .395395395Contents 11
FILE LOCATION: C:\Users\gina\Desktop\Checkout new\Dell Astute\UserGuide\Dell AstuteUG PrintTOC.fmDownloading Drivers, Firmware, and Software.Related Documentation. . .396. . . . . . . . . . . . . . . .396Documentation FeedbackGlossary12Contents. . . . . . . . . . . . . . .396. . . . . . . . . . . . . . . . . . . . . . . . . . . .399
1PrefaceThis guide contains the information needed for configuring and maintainingthe Dell Networking X1000 and X4000 Series devices through the DellNetworking Administrator.For explanation of acronyms, refer to the Glossary.DELL CONFIDENTIAL – PRELIMINARY 8/9/16 - FOR PROOF ONLYTemplate Last Updated - 2010Preface13
FILE LOCATION: C:\Users\gina\Desktop\Checkout new\Dell Astute\UserGuide\Dell Astute Prefix.fmDELL CONFIDENTIAL – PRELIMINARY 8/9/16 - FOR PROOF ONLY14Preface
2FeaturesThis section describes the features of the Dell Networking X1000 andX4000 Series devices.For a complete list of all updated device features, see the Release Notesincluded in the latest version of software released at dell.com/support.This section provides a brief description of the following features: IP Version 6 (IPv6) Support Head of Line Blocking Prevention Back Pressure Support Virtual Cable Testing (VCT) Auto-Negotiation MDI/MDIX Support MAC Address Capacity Support Layer 2 Features IGMP Snooping MLD Snooping Port and VLAN Mirroring Broadcast Storm Control VLAN Support Spanning Tree Protocol Features Link Aggregation Quality of Service Features Device Management Features Security Features DHCP Server Protected Ports Proprietary Protocol FilteringDELL CONFIDENTIAL – PRELIMINARY 8/9/16 - FOR PROOF ONLYTemplate Last Updated - 2010Features15
FILE LOCATION: C:\Users\gina\Desktop\Checkout new\Dell Astute\UserGuide\Dell Astute Features.fm UDLD Static Routing IPv6 Router sFlowIP Version 6 (IPv6) SupportThe device functions as an IPv6-compliant host, as well as an IPv4 host (alsoknown as dual stack). This enables device operation in a pure IPv6 network aswell as in a combined IPv4/IPv6 network.For more information, see IPv6 Addressing.Head of Line Blocking PreventionHead of Line (HOL) blocking results in traffic delays and frame loss causedby traffic competing for the same egress port resources. The switch preventsHOL blocking by queueing packets, such that packets in the front of a queuedo not block the packets behind if they are to be sent to different ports.Back Pressure SupportOn half-duplex links, the receiving port prevents buffer overflows byoccupying the link so that it is unavailable for additional traffic.For more information, see Back Pressure.Virtual Cable Testing (VCT)VCT detects and reports copper link cabling faults, such as open cables andcable shorts.For more information, see Diagnostics.Auto-NegotiationAuto-negotiation enables the device to advertise modes of operation. Theauto-negotiation function enables an exchange of information between twodevices that share a point-to-point link segment, and automaticallyconfigures both devices to take maximum advantage of their transmissioncapabilities.DELL CONFIDENTIAL – PRELIMINARY 8/9/16 - FOR PROOF ONLY16Features
FILE LOCATION: C:\Users\gina\Desktop\Checkout new\Dell Astute\UserGuide\Dell Astute Features.fmThe devices enhance auto-negotiation by providing port advertisement. Portadvertisement enables the system administrator to configure the port speedsthat are advertised.For more information, see Network Administration: Port Settings.MDI/MDIX SupportStandard wiring for end stations is known as Media-Dependent Interface(MDI), and standard wiring for hubs and switches is known as MediaDependent Interface with Crossover (MDIX).If auto-negotiation is enabled, the device automatically detects whether thecable connected to an RJ-45 port is MDIX (crossed) or MDI (straight). Thisenables both types to be used interchangeably.If auto-negotiation is disabled, only MDI (straight) cables can be used.For more information, see MDI/MDIX.MAC Address Capacity SupportMAC Address Capacity SupportAll SKUs support up to 16K MAC addresses except for the X4012 thatsupports 32K addresses. They reserve specific MAC addresses for system use.For more information, see Address Tables.Static MAC EntriesMAC entries can be manually entered in the Bridging Table, as an alternativeto learning them from incoming frames. These user-defined entries are notsubject to aging and are preserved across reset to reboots.For more information, see Address Tables.Self-Learning MAC AddressesThe device enables controlled MAC address learning from incoming packets.The MAC addresses are stored in the Dynamic Address Table.For more information, see Address Tables.DELL CONFIDENTIAL – PRELIMINARY 8/9/16 - FOR PROOF ONLYFeatures17
FILE LOCATION: C:\Users\gina\Desktop\Checkout new\Dell Astute\UserGuide\Dell Astute Features.fmAutomatic Aging for MAC AddressesMAC addresses from which no traffic is received for a given period, are agedout. This frees Bridging Table resources for learning new MAC addresses.For more information, see Address Tables.VLAN-Aware MAC-Based SwitchingThe device always performs VLAN-aware bridging. VLAN-aware bridgesperform VLAN-based MAC address learning and forwarding. Framesaddressed to a unknown destination MAC address are flooded to all ports ofthe relevant VLAN.This is a standard feature.MAC Multicast SupportMulticast service is a service that enables one-to-many and many-to-manycommunication for information distribution. In Layer 2 Multicast service, asingle frame is addressed to a specific Multicast address, from which copies ofthe frame are transmitted to the relevant ports. When Multicast groups arestatically enabled, you can set the destination port of registered groups, aswell as define the behavior of unregistered Multicast frames.For more information, see Network Administration: Multicast.Layer 2 FeaturesIGMP SnoopingInternet Group Management Protocol (IGMP) Snooping examines IGMPframe contents, when they are forwarded by the device from work stations toan upstream Multicast router. From the frame data, the device identifies workstations configured for Multicast sessions, and which Multicast routers aresending Multicast frames. The IGMP Querier simulates the behavior of aMulticast router. This enables snooping of the Layer 2 Multicast domain evenif there is no Multicast router.For more inform
the Dell Networking X1000 and X4000 Series devices through the Dell Networking Administrator. For explanation of acronyms, refer to the Glossary. 14 Preface FILE LOCATION: C:\Users\gina\Desktop\Checkout_new\Dell Astute\User Guide\Dell_Astute_Prefix.fm
Dell EMC Networking S4148F-ON 2.2 Dell EMC Networking S4248FB-ON The Dell EMC Networking S4248FB-ON is a 1-RU, multilayer switch with forty 10GbE ports, two 40GbE ports, and six 10/25/40/50/100GbE ports. Two S4248FB-ON switches are used as leaf switches in the examples in this guide. Dell EMC Networking S4248FB-ON 2.3 Dell EMC Networking Z9100-ON
TOSYM.123 Dell 1320C-593-10258 HY BK DELL 1320C/2130CN/2135CN 2.000 9,50 TOSYM.124 Dell 1320C-593-10259 HY C DELL 1320C/2130CN/2135CN 2.000 9,80 TOSYM.125 Dell 1320C-593-10260 HY Y DELL 1320C/2130CN/2135CN 2.000 9,80 TOSYM.126 Dell 1320C-593-10261 HY M DELL 1320C/2130CN/2135CN 2.000 9,80 TOSYM.251 Dell 593-10493 BK Dell 1230C Color Laser/1235CN Multifunction Colour Laser 1.500 .
Introduction 4 Order Number: 329866-001US 1 Introduction The Intel Quark SoC X1000 processor is the next generation secure, low-power Intel Architecture (IA) SoC for deeply embedded applications. The SoC integrates the Intel Quark SoC X1000 Core plus all the required hardware components to run off- the-shelf operating
monitor switch features, refer to the User Configuration Guide, which is available on the Dell EMC Support website at dell.com . NOTE: Switch administrators are strongly advised to maintain Dell EMC Networking switches on the latest version of the Dell EMC Networking Operating System (DNOS). Dell EMC Networking continually improves the .
Dell KACE K1000 as a Service Dell Mobile Workspace Dell Desktop Workspace Security & Infrastructure Dell Data Protection Dell SonicWALL Secure Remote Access, Secure Mobile Access, Next-Gen Firewall Dell One Identity Manager Dell Networking W-Series and ClearPass Applications Application development services
cluded "Break Forth O Beauteous Heavenly Light," by Bach; "Cradle Song of the Shepherds," an old folk melody; and "Good News from Hea-ven" by Bach. H1 X. RAich WIins Folk Song Medley X4000 Gener al Foods Fellows ip The first presentation of a 4000 General Foo
7 Dell EMC Networking and Cisco Spanning Tree Interoperability 1.1 Hardware Overview 1.1.1 Dell EMC Networking S4128F-ON The Dell EMC Networking S4128F-ON is a 1-Rack Unit (RU) switch with 28 fixed 10GbE SFP ports and to fixed 100GbE QSFP28 ports. Two of these switches are used in the de
Andreas Wagner1, Wolfgang Wiedemann1, Thomas Wunderlich1 1 Chair of Geodesy, Faculty of Civil, Geo and Environmental Engineering, Technical University of Munich, Munich, Germany, a.wagner@tum.de .
