Enterasys D2 D2G124-12P User Manual

D-Series CLI Reference 10-1
10
Port Priority and Rate Limiting Configuration
ThischapterdescribesthePortPriorityandRateLimitingsetofcommandsandhowtousethem.
Port Priority Configuration Summary
TheD‐SeriesdevicesupportsClassofService(CoS),whichallowsyoutoassignmission‐critical
datatohigherprioritythroughthedevicebydelayinglesscriticaltrafficduringperiodsof
congestion.Thehigherprioritytrafficthroughthedeviceisservicedfirstbeforelowerpriority
traffic.TheClassofServicecapability
ofthedeviceisimplementedbyapriorityqueueing
mechanism.ClassofServiceisbasedontheIEEE802.1D(802.1p)standardspecific ation,and
allowsyoutodefineeightpriorities(0 through 7)and assignthemtotransmitqueuesforeach
port.
Apriority0through7canbesetoneachport,with0being
thelowestpriority.Aportreceivinga
framewithoutpriorityinformationinitstagheaderisassignedapriorityaccordingtothedefault
prioritysettingontheport.Forexample,ifthepriorityofaportissetto4, theframesreceived
throughthatportwithoutapriorityindicated
intheirtagheaderareclassifiedasapriority4and
transmittedaccordingtothatpriority.Inaddition,thedevice’sratelimitingcapabilitiesallowyou
tofurtherprioritizetrafficbylimitingtherateofinboundtrafficonaperport/prioritybasis.
For information about... Refer to page...
Port Priority Configuration Summary 10-1
Configuring Port Priority 10-2
Configuring Priority to Transmit Queue Mapping 10-4
Configuring Quality of Service (QoS) 10-6
Configuring Port Traffic Rate Limiting 10-9
Note: When CoS override is enabled using the set policy profile command as described in “set
policy profile” on page 9-4, CoS-based classification rules will take precedence over priority
settings configured with the set port priority command described in this section.

Enterasys D2 D2G124-12P Specifications

General

Brand	Enterasys
Model	D2 D2G124-12P
Category	Network Router
Language	English