Zte ZXR10 2918E 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 2918E Specifications

General

VLANs	4K
Jumbo Frame	9K
Power Supply	AC: 100~240V, 50~60Hz
Operating Temperature	0°C~45°C
Storage Temperature	-40°C~70°C
Operating Humidity	10% to 90% non-condensing
Storage Humidity	5%~95% (non-condensing)
Power Consumption	<=25W