ADDER AdderLink ALIF2000T Guia do Utilizador descarregar pdf (Página 35)

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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 Querier.

• EnableSpanning Tree Protocol (STP) on all switches and importantly also

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 are enabled on all switches.

• Chooseanappropriateforwardingmodeonallswitches.UseCut-through

if available, otherwise Store and forward.

• 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rmwareversion(at

least v2.1).

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ADDER AdderLink ALIF2000T Guia do Utilizador Página 35