iii 
display port-isolate group····································································································································· 89 
port-isolate enable················································································································································· 90 
MSTP configuration commands·································································································································92 
MSTP configuration commands ···································································································································· 92 
active region-configuration··································································································································· 92 
bpdu-drop any ······················································································································································· 92 
check region-configuration··································································································································· 93 
display stp ······························································································································································ 94 
display stp abnormal-port····································································································································· 99 
display stp bpdu-statistics ···································································································································100 
display stp down-port··········································································································································103 
display stp history················································································································································104 
display stp region-configuration ························································································································105 
display stp root ····················································································································································106 
display stp tc························································································································································107 
instance ································································································································································108 
region-name ·························································································································································109 
reset stp ································································································································································109 
revision-level·························································································································································110 
stp bpdu-protection··············································································································································111 
stp bridge-diameter ·············································································································································111 
stp compliance·····················································································································································112 
stp config-digest-snooping ··································································································································113 
stp cost··································································································································································113 
stp edged-port······················································································································································114 
stp enable·····························································································································································115 
stp loop-protection···············································································································································116 
stp max-hops ························································································································································117 
stp mcheck····························································································································································118 
stp mode·······························································································································································119 
stp no-agreement-check ······································································································································119 
stp pathcost-standard ··········································································································································120 
stp point-to-point ··················································································································································121 
stp port priority ····················································································································································122 
stp port-log ···························································································································································122 
stp priority ····························································································································································123 
stp region-configuration ······································································································································124 
stp root primary ···················································································································································124 
stp root secondary···············································································································································125 
stp root-protection················································································································································126 
stp tc-protection····················································································································································127 
stp tc-protection threshold ···································································································································127 
stp timer forward-delay·······································································································································128 
stp timer hello·······················································································································································128 
stp timer max-age ················································································································································129 
stp timer-factor ·····················································································································································130 
stp transmit-limit ···················································································································································131 
vlan-mapping modulo ·········································································································································131 
BPDU tunneling configuration commands ············································································································· 133 
BPDU tunneling configuration commands ·················································································································133 
bpdu-tunnel dot1q ···············································································································································133 
bpdu-tunnel tunnel-dmac·····································································································································134