ADDER AdderLink ALIF1000T User Manual page 26

Configuring the switches and devices
The layout is vital but so too is the configuration:
• Enable IGMP Snooping on all L2 switches.
• Ensure that IGMP Fast-Leave is enabled on all switches with ALIF units
connected directly to them.
• Enable the L3 switch as an IGMP
• Enable Spanning Tree Protocol (STP)
enable portfast (only) on all switch ports that have ALIF units connected.
• If any hosts will use any video resolutions using 2048 horizontal pixels (e.g.
2048 x 1152), ensure that Jumbo Frames
• Choose an appropriate forwarding mode on all switches. Use
if available, otherwise Store and
• Optimise the settings on the ALIF transmitters:
• If colour quality is important, then leave Colourdepth at 24 bits and
adjust other controls,
• If moving video images are being shown frequently, then leave Frame
Skipping at a low percentage and instead reduce the Peak bandwidth
limiter and Colourdepth.
• Where screens are quite static, try increasing the Background Refresh
interval and/or increasing the Frame skipping percentage setting.
Make changes to the ALIF transmitters one at a time, in small steps, and
view typical video images so that you can attribute positive or negative
results to the appropriate control.
• Ensure that all ALIF units are fully updated to the latest firmware version (at
least v2.1).
Querier.
on all switches and importantly also
are enabled on all switches.
Cut-through
forward.
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