![]() ![]() Therefore, USB CDC-NCM adaptors are the recommended choice for use with DVS. In USB CDC-NCM, packets take a much more direct route (through kernel space once only), which is hardware-optimised – meaning the route is faster (enabling lower latency settings), and inherently more stable. In the first model, USB CDC-ECM, audio packets arriving via the Ethernet adapter have to take a fairly complex route through the computer’s logical architecture (‘kernel space’ twice, and also ‘user space’) before arriving at DVS – and the same (but reversed) route when travelling from DVS to the adaptor. There are two main USB driver standards for Ethernet support: USB CDC-ECM (Ethernet Control Model), and USB CDC-NCM (Network Control Model), which is a newer and more advanced standard. However, as some computers (such as Apple Macbooks) don’t provide built-in adaptors, an external USB Ethernet adaptor is required – the most popular type being USB-C. Generally, built-in Ethernet adaptors are recommended for use with Dante Virtual Soundcard (DVS). If the issue is still present with a direct connection, try a USB to Ethernet adapter in place of the built-in Ethernet port, which should resolve the problem. To confirm this as the issue, connect a Dante enabled hardware device directly to the computer so the switch is bypassed. This issue may also be due to the Mac’s built-in Ethernet port blocking communication from the leader clock. Your switch configuration may be different, please contact the switch manufacturer or your network admin for assistance with this configuration. This example is for a Cisco SG300 network switch. However, assuming the Mac has a Gigabit port, you should be fine. The easiest solution is to ‘Forward All’ multicast to the Mac. In effect, that disables IGMP snooping for that port. This can prevent DVS achieving PTP sync with the network, which in turn prevents reliable audio transmission. In some macOS and switch configurations, IGMP snooping can interfere with PTP traffic to the computer’s network interface. This FAQ will be updated if this situation changes. Remediation: None necessary at this time. ![]() We will continue to systematically evaluate these for exposure and take remediation action as appropriate. Our investigation continues, but Audinate products and services have no known direct exposure to this vulnerability at this point in time.īeyond Audinate’s core products and services, Audinate utilises software products & cloud services from a range of third parties across our business. ![]() Audinate has looked for and not identified the use of the Log4j library in any of our public products and services. This FAQ will be updated if this situation changes.ĭetails: There have been recent concerns regarding the widespread exploitation of a critical remote code execution vulnerability (CVE-2021-44228) affecting Apache Log4j, a Java logging framework. Summary: Audinate products and services have no known exposure to the Apache Log4j security vulnerability (CVE-2021-44228) at this time. Affected Products / Versions: None known at this time. ![]()
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