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4 – Index
blocked link … 4-12
blocked port … 4-10
broadcast storm … 4-3
enabling MSTP … 4-40
MSTP
See spanning-tree, 802.1s
VLAN effect on … 2-55
spanning-tree
config-name … 4-43
config-revision … 4-43
instance vlan … 4-42, 4-43
root-history … 4-58
spanning-tree, 802.1s …4-4, 4-6
802.1D and 802.1w connections … 4-16
802.1D as a region … 4-13, 4-16
802.1Q VLANs … 4-12
802.1s standard-compliant … 4-6
802.1w as a region … 4-13
active path … 4-10
active paths … 4-15
bandwidth loss … 4-12
benefit … 4-6
blocked traffic … 4-11
boundary port, region … 4-14, 4-15
boundary port, VLAN membership … 4-11
BPDU … 4-11, 4-19, 4-22, 4-23, 4-27
BPDU requirement … 4-14
BPDU, function … 4-14
bridge … 4-14
bridge, designated for region … 4-14
caution … 4-6, 4-9
CIST … 4-8, 4-13, 4-15
CIST per-port hello time … 4-15
CIST root … 4-27
CIST root, display change history … 4-58
common and internal spanning tree
See CIST.
common spanning tree
See CST.
compatibility … 4-16
compatibility mode … 4-22
configuration … 4-21, 4-40
configuration identifier … 4-14
configuration steps … 4-19
configuration, BPDU port protection … 4-30
configuration, exchanging … 4-40
configuration, MST instance … 4-35
configuration, MSTI per-port … 4-37
configuration, port … 4-26
CST … 4-8, 4-11, 4-13
CST and legacy devices … 4-11
CST, view status … 4-51, 4-52
debug, display counters … 4-61, 4-62, 4-64
default configuration … 4-9
designated bridge … 4-11, 4-14
designated port … 4-11
disabling MSTP … 4-40
display statistics and configuration … 4-49
dynamic VLANs, disallowed … 4-9
edge port … 4-26
enabling a region … 4-40
enabling MSTP … 4-40
example of multiple topologies … 4-10
fault tolerance … 4-6
force protocol version … 4-16
forward-delay … 4-23
forwarding paths … 4-16
forwarding state … 4-26
frame duplication and misordering … 4-16
general operation … 4-4, 4-6
GVRP … 4-8, 4-15
hello-time, CIST root, propagated … 4-15, 4-23
hello-time, override … 4-15
hello-time, propagated … 4-15
hop-count decremented … 4-23
instance … 4-4, 4-15, 4-20
instance, display debug counters … 4-61, 4-62,
4-64
instance, forwarding topology … 4-16
instance, IST … 4-8
instance, type … 4-8
internal spanning tree
See IST.
interoperating with 802.1D and 802.1w … 4-13
IST … 4-8
IST instance … 4-8, 4-35, 4-44
IST root … 4-8, 4-10, 4-14
IST root, display change history … 4-58
IST, defined … 4-13
IST, dynamic VLAN … 4-15
IST, root switch … 4-13
IST, switch membership … 4-13
IST, VLAN membership … 4-8
legacy devices and the CST … 4-11
legacy STP and RSTP … 4-11
mesh environment … 4-6, 4-16