Zte ZXR10 5250 Series - Figure 5-37 Diagram of the Master Node Blocking Its Secondary Port When the Ring Is in up State; Figure 5-38 Diagram of the Master Node Opening Its Secondary Port When the Ring Is in down State

Chapter5ServiceConguration
Figure5-37DiagramoftheMasterNodeBlockingitsSecondaryPortWhentheRing
isinUPState
Figure5-38DiagramoftheMasterNodeOpeningitsSecondaryPortWhentheRing
isinDOWNState
AsshowninFigure5-37,alllinksoperateproperly,theringisinUPstate,thesecondary
portofthemasternodeisblocked,andtrafcneedstogothroughswitchCandswitchD.
AsshowninFigure5-38,thelinkbetweenswitchBandswitchCisdisconnected,thering
stateischangedtoDOWN,ZESRrapidlytransitsthesecondaryportofthemasternode
toForwardingstate,andtrafcisswitchedquicklytoswitchAwithoutgoingthroughswitch
CandswitchD.
WhenthelinkbetweenswitchBandswitchCrecoversfromdisconnection,thesecondary
portofthemasternodeisblockedagain,theringisswitchedtoUPstate,andtheentire
ZESRregionreturnstothestateshowninFigure5-37.
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SJ-20131111172707-002|2013-11-27(R1.0)ZTEProprietaryandCondential