Fibre Optic Networks - Focusrite RedNet Installation Manual

How to set up your switch
To set up the managed switch, the following DSCP values should be given the priority shown in
thetable. Please refer to the user guide of your managed switch for instructions on how to set DSCP
packet priority values. This may be under a section called QoS or Quality of Service.
DSCP Value
CS7
EF
CS1
BestEffort
Where the switch offers it, Trust Ingress DSCP Values must be enabled. For systems with any
multicast data, IGMP Snooping should be switched on.
In addition to these QoS settings it is important that Green Ethernet, or EEE, is switched off as it can
cause audio dropouts. For an example of how to set up the Cisco SG200 series switches, please visit
www.focusrite.com/rednet

FIBRE OPTIC NETWORKS

Using a fibre network can greatly increase the distance across which your audio can be transmitted
and received. RedNet devices cannot themselves connect directly to an optical network, however
many gigabit Ethernet switches provide the provision for optical modules, allowing you to have a
fibre optic infrastructure with the nodes (in this case RedNet devices) connected to the network with
Cat 5e or Cat 6 cable to a local switch.
For details on how to set up a fibre optic network please refer to the documentation supplied with
your gigabit Ethernet switch.
Priority
High
Medium
Low
None
Usage
Time critical PTP events
Audio, PTP
(reserved)
Other traffic
53