IT for AVs | media networks for events
Online Training
Duration: 2 weeks | 30hrs | 9 live training classes
Comprehensive
No previous knowledge necessary
FREE
3hrs live teaching
“Try-Before-Buy”
- Fundamentals introduction
- 1st live teaching session for free (3hrs)
- Check if you like the concept & trainer
- UPGRADE DURING SHOW COSTS EXTRA 50€
BASIC
17hrs live teaching
Best for all AV technicians
- Fundamentals
- Network monitoring
- 5 live teaching sessions
- 17hrs live teaching
- Excercises and learning goal control
STANDARD
30hrs live teaching
Best for audio technicians
- System Design & Dante Audio
- 9 live teaching sessions
- 30hrs live teaching
- Excercises and learning goal control
- Practical exercises on your own hardware
PREMIUM
90hrs live teaching
Best for perfectionists
- Standard plan +
- Repeat each live session 2 times at future courses
- Up to 3x 30hrs live teaching
- Select the date of participation from all future shows (within 2 years)
- Separate Q&A sessions for Premium participants
- 1hrs 1:1 training with Bodo Felusch
U P C O M I N G E V E N T S
Dates
Waiting list
B O O K I N G vs. T I M E T A B L E
Break-even
Minimum number of participants
10
If the minimum number of participants is not reached, the participation fees will be fully reimbursed. Further claims are excluded
P R O O F O F C O N C E P T
Experience
6 years teaching IT For AVs
Optimization
Over 70 live in person trainings
Like-minded
IT at eye-level of audio-engineers

T E S T I M O N I A L S
O V E R V I E W
The live training class “IT For AVs” is the new standard for teaching online. Within 2 weeks you will attend in 9 live teaching sessions and get over 30h live training with classmates, ask questions directly and join Q&A sessions. Combined with exercises, homework and tests you will experience a learning courve way beyond actual standards. This training is based on the german industry standard “Netzwerktechnik für Veranstaltungstechniker” established in 2013 by Bodo Felusch. The live in person training is a three-day seminar and can also be booked for a local hosting in your company. All topics are also covered by the online version without bombing your mind for 8hrs sitting on a computer.
The online seminar is addressed to technicians, operators, engineers and designers working with audiovisual media using IEEE 802 Ethernet networks for signal transport. The participants do not need any previous knowledge and are introduced to the IT technology from scratch. In the training, they learn to understand the language of the IT professionals at a high level, focusing on the topics relevant to the everyday practice of the participants. The basic level of the seminar are comprehensive and suitable for audio, lighting and video specialists alike. The standard level is sector-specific for sound engineers with particular focus on Dante Audio. The premium version gives you the chance to attend to the complete standard plan dates you have booked plus participating in any future date up to two times each live session. This enables you not only to repetite in the timeslots you need but only to switch to a different trainer if possible.

Trainer
Bodo Felusch
Audio technician, Audio over IP specialist and initiator of the seminars “Lake Training” since 2008 and “Media networks for events” since 2013.
Motto: “No panic! …it is only a network”

Trainer
Johannes Krämer
Audio consultant, live sound operating since 1980 and audio over IP specialist.
Motto: “There is a solution, we will find it.“
D E T A I L S
Why networks?
IT components of the signal chain are not a trend that’s going to disappear. The advantages over old-fashioned analog or digital direct connections are one of the reasons for this. For example, the physical connection is no longer the same as the logical connection. Once set up, the physical location of the devices no longer plays any role. Sender and receiver communicate directly with each other as soon as they find themselves in the network and make it possible to have different physical locations with the same signal routing without service. Redundancies can be realized cost-effectively and required bandwidths for the mixed operation by different technical crews are scalable. Ethernet networks are subject to rapid technological progress, are highly available, and planning skills are a matter of course internationally.
How do I understand networks?
As a media-creating user, one must master the fundamentals of the technology to ensure safe commissioning and troubleshooting. Recently, when production-relevant signals such as Dante Audio, Art-Net Light or SDVoE video streams are transported exclusively over Ethernet networks, the basic knowledge of network technology should be part of the standard repertoire of responsible technicians, because in practice Layer-3 management in complex redundant networks has long been part of everyday business.
But who can share this knowledge? Several years of training as a network administrator do not seem to be effective here! Unfortunately, those who are perfectly familiar with network technology usually speak a different language than an event technician because their workspace is completely different. This circumstance is taken into account by presenting the knowledge in a clear and accessible way. The practical relevance to the daily work of sound, light and video technicians is here a top priority.
What is part of the free plan?
The free plan is like an open door to the training room. You can enter the room. You be part of the class and can interact with your classmates. You can attend the first live training class wich gives you full access to the knowledge of 3 hours live teaching, you will find the covered topics at the content section below. For 3 hours, you are a full member of the class and can ask any question and more, BUT after these 3 hours you will be kicked out of the classroom and your account will be deleted.
- You don´t know if you can understand IT topics?
- You don´t know if an online training is a good choice compared to an in person training?
- You don´t know if you like listening to the trainer?
WE HAVE THE ANSWER -> CHECK IT OUT!
The free option is perfect for you if you answer at least one of the questions above with “yes I´m struggling with it”
But, after the first live session, you can update to any of the other plans but there is a update fee of extra 50€.
So, if you don´t struggling with any of the above questions, go for another plan and join the group as a full member.
What is part of the basic plan?
The openness and compatibility of IEEE Ethernet is often publicized, but in practice this ideal world of compatibility quickly reaches its limits. Limits that the participants of the seminar get to know as well as how to build working solutions for mixed production networks. Here, different ambits are to be separated via VLANs and transported via common and redundant backbone lines in different topologies. The choice of the right cable plays a particular role in the harsh everyday life of the event industry, the differences between copper and fiber optic cables and their construction forms are discussed extensively. The participants understand why there are drastic performance differences between different cables and why network cables are basically always partially defective, but thanks to ruthless oversizing it is not a problem to securely transmit the required bandwidths. In order to increase the bandwidth between the different network positions, link aggregation groups are set up and data are given priority by means of Quality of Service. Typical bandwidths of audio, light and video signals in the IP world are discussed, and an outlook on changing requirements with SDVoE (Software Defined Video over IP) is given. Different protocols such as TCP, UDP and AVB are studied as well as different data transmission types like unicast, multicast and broadcast are discussed to understand what role IGMP or ACL filters play in multicast networks.
In addition to bandwidth planning, the Network Monitoring is also a separate half-a-day thematic block, so the participants get to know the functionality of SNMP and how to use it in practice with PRTG software. The live monitoring of the IT status of switches, ports, cable redundancies and bandwidth monitoring is comprehensibly developed in PRTG. The participants are then able to set up their own PRTG maps for visual monitoring of the event’s IT.
In practical presentations the participants apply their acquired knowledge. They design and configure a layer-3 switch for the mixed operation of Dante Audio, Art-Net lighting and production networks and learn how to understand a switch via web interface and focus on complex menu structures. With practical exercises on the devices, dual redundant networks are put into operation, errors are sought and provoked to get to know their effects.
The basic plan IT fundamentals part that is equally suitable for audio, lighting and video technicians and is culminated with the introduction of useful tools for network practice. In addition, the selection process of suitable switches is discussed and supplemented with valuable practical tips for configuration and documentation, because in the end, it is not enough to understand the technology and have created a working setup for yourself. During the productions, colleagues must also be able to understand what they have in front of them to ensure safe use and failure detection.
What is part of the standard plan?
A1? Go ahead!
The standard plan of the online training seminar is sector-specific. The Audio over IP with Dante topic is introduced and distinguished from other protocols such as AVB and AES67. The basic notions such as redundancies, topologies, link aggregation groups and RSTP are then transferred into practice, since an efficient use of multi-fiber optic cables is also important. A characteristic of Dante networks is the sample-accurate and phase-synchronous transmission of audio data as long as the user has selected the correct latency values. The participants learn how this relates to existing network sizes, where the limits are and how to mix different latency values in complex systems, as well as the effects of wrongly chosen sizes. Another central point is the synchronization or transmission of clocking in the network using the PTP protocol. First, the principle behind PTP is taught, and then the qualitative differences in terms of absolute jitter sizes in PTPv1 and PTPv2 are compared between one another and with reference values and hearing thresholds. How a Dante network synchronizes itself or how the user integrates external clock sources is also discussed here. Dante Audio data can be transmitted via unicast or multicast. Where the differences are and what limits “multi” unicast connections have is explained by using some real-life examples.
In a practical workshop with hardware of the participants, the theoretical knowledge is then applied in practice live on the devices under professional guidance.
What is part of the premium plan?
To make a long story short:
Q: “Can I come again?
A: “YES”
The Premium plan coveres everything that is covered in the standard plan for audio engineers plus additional features. With learning new skills it is a normal thing to forget some details along the way. The standard plan includes tools like muliple choice test and slides to scroll back. But as a premium member you can repeat each live teaching lesson two times at any future shows witin 2 years after booking. This enables you not only to fire new questions live to the teacher but also to interact with any new and active classmates because your account is active until you´re done! Depending on the booking situation we will provide special Q&A sessions with all premium members, you can also attend all of these sessions as long as your account is active. But that’s not all, you can also schedule a 1 hour one on one training session with Bodo Felusch to discuss your hardest topics.
C O N T E N T S
FREE PLAN
Fundamentals of data networks
- What is Ethernet
- OSI Model
- NIC
- MAC Adresse
- Hub
- Switch (Layer 2)
- IP-Address
- Switch (Layer 3)
- Router (Layer 3)
- Subnet mask
- W-LAN Router & Access Point
- PoE
- W-LAN
- Extending the coverage of a W-LAN
- Max. allowed radiated power
- Directional antennas
- SSID Cloning
C O N T E N T S
BASIC PLAN
Fundamentals of data networks
- Shielding
- Cathegories
- Transmission errors
- Damping
- Crosstalk
- Reflexions
- Interferences
- Bandwidth limitations
Optical fiber
- Structure
- Modes
- Multimode vs. Singlemode
- Fiber cathegories / Optical classes
- Patch cable types
- Direct connection systems
- Lens connection systems
Choosing cable in practice
- Mating cycles
- Copper vs. optical fiber
- Max. cable lengths
- Auto Crossover / Auto MDI
- Auto-Sense / Auto-Negotiation
- DHCP
- ACL
- Ports | Port conflicts
- ARP
- IP
- TCP
- UDP
- AVB
- Art-Net
- MA-Network
- Unicast
- Multicast
- Broadcast
- Broadcast storm
- IGMP
- IGMP Snooping
Network topologies
- Point-to-point
- Line
- Ring
- Star
- Tree
- Mesh network
- Backbone
- Mixed operation
- Trunk Ports / Link Aggregation
- Typical bandwidths in media networks
- Headroom recommendations
- STP/RSTP/MSTP
- VLAN
- Port-based VLAN
- Tagged VLAN
- QoS
- Prioritizing with QoS possibilities & limitations
- DSCP/DiffServ
- Identification of media networks
- Apple Bonjour
- Zeroconf
- Clock Jitter
- Packet Jitter
- Energy-saving options
- Green Ethernet
- IEEE 802.3az Energy Efficient Ethernet
Tools for the network practice
- Ping commands
- NetSetMan Pro (Win)
- Angry IP Scanner (Win)
- Wireshark (Win/OSX)
- inSSIDer [Windows] / iStumbler [OSX]
- Cable tester
Which switch is the right one for me?
- Requirements for Dante Audio
- Other requirements
- Equipment test results from Yamaha
- Equipment test results from Q-SYS
- Pros and cons of different models
- D-Link DGS1210-52
- Cisco SG300 Series
- Teqsas cyberTEQ-m
- Luminex GigaCore
Pimp my switch …Practical tips for your own hardware
- Configuration for mixed operation with Dante, Lake and free VLANs
- Configuration documentation for the users
- Practical example Set- & Case Design Gahrens + Battermann GmbH
- ACL VLAN Filtering for Lake and Dante Multicast
- Setup of ACL filter roles in detail – Example.: Linksys SRW224G4
- Setup of ACL filter rols in detail – Example.: D-Link DGS1210-52
- Rules for stress-free networking
Creation of the documented switch configuration example, via web browser
- IP+Subnet
- VLANs
- LAG Trunks & Backbone Ports
- RSTP
- CoS Prioritizing for media networks
- ACL-Filtering
- SNMP-Monitoring
- Saving
- Documenting
- Setting up further devices
Network monitoring
- Introduction, why you need network monitoring
- The players
- The principle
- The details
- How it works
- Monitoring software & example workflow for status monitoring
- Switch status monitoring
- Port status monitoring
- Bandwidths monitoring
- Map setup
- Tips & Tricks to begin
- MikroTik The Dude …short overview
- Paessler PRTG …All You Need To Know
C O N T E N T S
STANDARD PLAN
System Design & Dante Audio
- History & Status Quo
- Dante. Ravenna, AVB, AES67 …what else?
- Compatibility of different protocols
- Differences between different protocols in detail
- Compatibility of the IT infrastructure
- Overview
- Maximum channel number depending on transfer rate
- Audinate Brooklyn II Module & other modules
- Lake Custom Brooklyn Module
- How high is the latency with Dante?
- How is Dante transmitted over the network?
- DSCP/DiffServ configuration for Dante
- Dante and W-LAN
- Segmentation of the signal chain from A/D to D/A conversion
- Maximum network dimensions depending on the latency
- Matching up digital audio signals and network … how does it work?
- Wordclock vs. Clocking in a network
- PTP (Precision Time Protocol IEE1588)
- Differences between PTPv1 and PTPv2 and their requirements to the IT Hardware
- Qualitative differences between PTPv1, PTPv2, Wordclock, MADI etc. | Comparison with reference values and hearing thresholds
- Dante-Master Clock Priority
- Yamaha MY16AUD – Sync LED
- Yamaha MY16AUD – Error LED
- Yamaha MY16AUD – common sources of error
- Summary of Clock Setup
- Automatic Dante Clock Setup
- Manual Dante Clock Setup
- Dual redundant Dante network with star point
- Dual redundant Dante network as line
- Dual redundant Dante network as ring
- Dual redundant Dante network as hybrid ring-tree
- P2P
- P2P with Trunk
- P2P with RSTP Ring
- Simple line
- Line with Trunk
- Line with RSTP Ring
- Dante Dual Redundant Network – P2P
- Dante Dual Redundant Network – Line
- Dante Dual Redundant Network – Trunked Line
- Dante Dual Redundant Network – RSTP Ring
- Dante Dual Redundant Network – RSTP Ring + Tree
- Data rates in Unicast & Multicast
- Dante Audio Channel vs. Audio Flow
- Dante Multicast
- Dante „Multi“ Unicast and system limits on practical examples
Practical Workshop
- Creation of the documented switch configuration, online on the device
- Set up a dual redundant network in ring and LAG configurations
- Dante Controller A-Z
- Playback and recording with Dante Virtual Soundcard
- Virtual Soundcheck with Dante Controller & DVS
- Packet analysis with Wireshark
- Multicast transmission: check the ACL with Wireshark and provoke errors
- Simulate the cable failure
- Bandwidth planning, management & monitoring with PRTG