Luxul XMS-1024, User Manual

Page: 23 / 40

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User Guide
23
5.7 QoS
„
QoS„functions„can„be„implemented„through„a„combination„of„priority„mode„
settings„and„priority„control„options.„The„XMS-1024„supports„packet„mapping„by„4„
priority„levels„(low,„normal,„medium„and„high)„and„3„priority„setting„modes:„Type„of„
Service„(ToS)„Priority,„802.1P„Tag„Priority,„and„802.1P„Default„Priority„
„ „
QoS priority setting modes are in the following order from highest to
lowest:
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ToS„Priority:„If„“ToS„Priority”„is„enabled,„the„switch„automatically„reads„an„8-bit„
ToS„tag„from„the„IPv6/IPv4„packet.„If„the„priority„tag„indicates„a„high„priority,„
this„packet„is„mapped„to„high„priority„for„priority„processing.„When„the„switch„
becomes„busy,„it„processes„the„packets„marked„with„a„high„priority„first.„
„ w
802.1P„Tag„Priority:„If„“802.1Q„Tag„Priority”„is„enabled,„the„switch„automatically„
reads„a„3-bit„priority„tag„from„the„packet„with„a„valid„VLAN„tag.„If„the„priority„
tag„indicates„a„high„priority,„the„packet„is„mapped„to„high„priority.„When„the„
switch„becomes„busy,„it„processes„the„packets„marked„with„a„high„priority„first.„
„ w
802.1P„Default„Priority
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Port„Priority:„If„“Port„Priority”„is„enabled„and„high„priority„is„assigned„to„a„physi-
cal„port,„all„packets„passing„this„port„are„mapped„to„high„priority.„As„a„result,„
the„switch„processes„the„packets„received/transmitted„by„this„port„first.
„ „
Description of QoS Configuration:
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Port„ID:„Selects„the„port„to„be„set„
„ w
Port„Priority:„Select„“low”,„“normal”,„“medium”„or„“high”„for„the„desired„port„
priority„