Appendices
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A.4 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 ServSwitch Agility 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 ServSwitch Agility 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ServSwitchAgility transmitters:
• Ifcolorqualityisimportant,thenleaveColordepth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 Colordepth.
• Wherescreensarequitestatic,tryincreasingtheBackgroundRefreshintervaland /orincreasingtheFrameskippingpercent-
age setting.
Make changes to the ServSwitch Agility 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ServSwitchAgilityunitsarefullyupdatedtothe latestfirmwareversion(atleastv2.1).