Zte ZXR10 2910E-PS User Manual

ZXR102900ESeriesCongurationGuide
Figure4-9MSTPTopologicalStructure
SpanningTreeProtocol(STP)cancalculateaccordingtotheprotocol.Portsaredivided
intodifferentparts:
lMaster:TheporttypeisintroducedinMSTPprotocol.Whenthemultipledifferent
areasexist,themainportistheminimalpathcostportpointtotheroot.
lRoot:Theportthathastheminimalcosttorootbridgeandtakeschargeinforwarding
datatorootnode.Whenmultipleportshavethesamecosttotherootbridge,then
theportwiththelowestportprioritybecomestotherootport.
lDesignated:Theporttransmitsdatatoswitchdownward,andsendsSTPprotocol
messagetomaintainthestateofSTP .
lBackup:TheportreceivestheSTPmessage,whichprovesthatthereexitsaloop
routetotheportitself.
lAlternate:TheportreceivesexcessSTPprotocolmessagefromotherequipment.
However,whentheoriginallinkabnormallylost,theportunderthisstatecantransfer
totransmittingstateandmaintainthenetworkinsteadoftheportlapsed.
lEdged:Theportisusedtoconnecttheterminalequipment,suchasPC.Theport
doesnotparticipateincalculationbeforeSTPisstable,andthestatecanbeswitched
fast.
Accordingtoportrole,thestateafterthecalculationbeingsteadyisshowninT able4-1.
Table4-1PortRoleandPortState
PortrolePortstate
MasterForward
RootForward
DesignatedForward
4-34
SJ-20120409144109-002|2012-07-02(R1.0)ZTEProprietaryandCondential

Zte ZXR10 2910E-PS Specifications

General

Brand	Zte
Model	ZXR10 2910E-PS
Category	Switch
Language	English