6716 VIA16 Manual
6716-200-REV1
2018-05-25
14
If changes are made to the ring configuration while the ring is active, it may be necessary to
reboot all switches for the changes to take effect.
Rapid Spanning Tree
Property
Description
RSTP Enable
Enable / Disable The Rapid Spanning Tree Protocol (RSTP).
Warning: Rapid Spanning Tree must be enabled on all switches to detect loops correctly.
Network loops created through un-managed switches may not be detected correctly.
Pathway's implementation of Rapid Spanning Tree Protocol should be inter-operable with
other switch manufacturer's implementations.
The Rapid Spanning Tree algorithm detects and prevents network loops. The interaction
between RSTP and the Ring Protect system may cause long network re configuration times
when the ring topology is changed. For this reason, it is recommended that RSTP be used
during setup and then disabled after verifying there are no loops present.
For more information, please refer to the Appendix.
Art-Net Alternate Mapping
This feature is used in conjunction with the “Art-Net Trap-and-Convert to sACN”, feature. It
does not affect unicast Art-Net packets.
The Art-Net protocol uses two hexadecimal numbers, a ‘subnet’ and a ‘universe’, to define
its DMX universe numbering. Numbering is usually shown as # - # and the valid range is from
0 - 0 (zero-zero) to F- F.
However, most other common protocols, including sACN, do not have a universe ‘zero’. The
issue is compounded because some Art-Net implementations are shown in a straight
decimal representation (1, 2, 3, 4…) without any indication if “1” corresponds to Art-Net
universe 0-0 or to 0-1.
By default, Art-Net Universe 0-0 is ignored by the VIA and the packets discarded. When
Alternate Art-Net Mapping is enabled, VIA switches will map Art-Net Universe 0-0 to sACN
Universe 1. When Alternate Art-Net Mapping is disabled, Art-Net Universe 0-0 will be ignored
by the VIA and Art-Net Universe 0-1 will be routed as sACN Universe 1.
