Operation Manual

33
CoS Priority Class
WithoutCoS,mosttrafcreceivedbyaSwitchisforwarded
with the same priority it had upon entering the switch. In
manycases,suchtrafcis‘‘normal’’priorityandcompetes
for bandwidth with all other normal-priority trafc,
regardlessofitsrelativeimportancetoyourorganization’s
mission. CoS helps to keep the most important network
trafcmovingatanacceptablespeed,regardlessofcurrent
bandwidth usage. This means you can manage available
bandwidth so that the switch transmits the most important
trafcrst.ClicktheCoSPriorityClasslinkundertheQoS
menutodenewhich802.1p/Qprior-ityclass(low,normal,
medium,orhigh)isappliedtountaggedingresstrafc.
Priority: ShowsthePriorityCodePoint(PCP)thatarefrom
0 to 7.
Class: Select the Class of Service (CoS) that is applied
totrafc.TheCoSsetting letyoumayeachoftheeight
priority levels to one of four internal hardware priority
queues: High, Medium, Normal and Low.
Apply: Click Apply to update system settings.