Zte ZXR10 5900E Series - Page 65

Chapter5STPConguration
St-
ep
CommandFunction
1
ZXR10#showspanning-treeinstance<instance>
Thisshowsdetailsofthe
instance-basedspanning
tree.
2
ZXR10#showspanning-treeinterface<port-name>
Thisshowsspanningtree
informationofadesignated
interface.
3
ZXR10#showspanning-treestatistics<port-name>ThisshowsstatisticsonBPDU
packetssentandreceivedby
adesignatedinterface.
4
ZXR10#showspanning-treeinconsistentportsThisshowsmaintenance
informationofBPDU
protection.
Note:
Inthefollowingthreecases,loopscannotbeenavoidedevenif
STPfunctionofswitchisenabled.
1.Twoswitchesbutmultipleparallellinks.Oneconvergeport
congurationsandtheotherdoesnotdoso.
2.Oneswitchconvergecongurationsofmultipleportsbutone
portintheaggregationportgroupisconnectedtootherports
ofthelocalequipmentinself-loopmode.
3.Twoswitchesbuttwoparallellinks.Duetounknownreasons,
bothofthemcannotreceiveBPDUpacketsfromtheopposite
side.
CondentialandProprietaryInformationofZTECORPORATION55