LANAUDIO
Contents
Troubleshooting LANAUDIO (AES67 / Livewire)
"Nothing received" :
- UDP port ?
- if VLAN used : is same VLAN ?
- Switch IGMP snooping enable
Clocking problem
(audio clics and many "samples added/removed/overrun" in logs) :
- Check Synchro Reference Clock
- Check Synchro Status : must be stable "LOCKED"
- if VLAN used : is same VLAN for clock ?
- Switch QOS
- Switch IGMP snooping enable
- If SOUND4 is always Clock Master, better configure "Ref Clock internal" to use the clean low drift quartz (if not, may be too far from true 27MHz, and sync may not be possible)
Latency Problem
(audio clics and few "samples added/removed/overrun" in logs) :
- Switch QOS
- increase Buffer in Profile
Audio Packet Loss
- Check Audio Channel Status : must be stable "Stream OK"
- Switch QOS
- Switch IGMP snooping enable : board should not receive other audio streams than the ones configured. Check AES67/LIVEWIRE logs for "Dropped packets" with the faulty IP in hexa.
Tools
RAV2SAP
Translate Ravenna mDNS <=> Dante SAP
May be used to diagnose advertisement problems (SDP SAP)
https://www.ravenna-network.com/aes67/rav2sap/
EBU LIST (Live IP Software Toolkit)
The Live IP Software Toolkit is a suite of software tools that help to inspect, measure and visualize the state of IP-based networks and the high-bitrate media traffic they carry.
It allows the user to:
- evaluate the utilization of a given network
- measure the impact of new equipment connected to the network
- pinpoint problems in an IP-based live production facilityLIST can decode network streams and can be used to inspect basic and deep level network properties.
