Advanced Traffic Management Guide K/KA/KB.15.15

spanning tree
MSTP
active path, 123
BPDU, 78, 81, 84, 123
broadcast storm, 119
change VLAN instance, 78
CIST, 81
CIST root, 84
compatability with RSTP or STP, 127
compatibility mode, 80
configuration steps, 77
CST, 124
CST status, 99
debug counters, 113, 114, 115
default settings, 78
display statistics and configuration, 98
enabling a region, 93
enabling, disabling, 93
fault tolerance, 122
forward delay, 80
forwarding state, 83
general operation, 119
hop count, 81
in a switch mesh, 122
instance, 78, 90
instance mapping, 96
instance status, 100
instance types, 125
instance VLAN, 95
IST instance, 90, 96
IST port priority, 92
loop protection, 129
meshing, 182
MIB support, 98
MSTI port priority, 92
operating rules, 125
operation, 121
pending configuration, 104
pending option, 80
per-port parameters, 83
planning for, 77
port states, 123
preconfigure VLANs in instance, 95
priority, 78
priority resolution, 91
priority, device, 82
PVST filtering , 129
PVST protection , 128
redundant links, 123
region, 119
region configuration, 103
region name, 79
regions, 122
root history, 111
root switch instance, 91
routed traffic, 123
saving current configuration, 97
traps, 83
troubleshooting, 110
trunked link, 101, 124
viewing global configuration, 101
VLAN instance assigned, 91
VLAN membership, 124
VLAN range option, 96
with legacy STP and RSTP, 124
with VLANs, 124
RPVST+
admin edge port, 134
auto edge port, 134
BPDU filtering, 135, 136
BPDU protection, 135, 137
BPDU status, 147
comparison, 163
configuration steps, 131
debug, 162
debug counters , 157
debug counters per-port per-VLAN, 159
debug counters per-VLAN, 158
debug output, 160
default, 166
enabling, disabling, 135
event log messages, 161
forward delay, 132
global configuration, 152
global configuration per port, 154
global configuration per port per VLAN, 155
global configuration per VLAN, 153
global settings, 132
global status, 143
history of root bridges, 156
ignore PVID inconsistency, 139
loop guard, 140
mode selection, 131
operation, 163
per-port per-VLAN settings, 133
per-port settings, 134
per-VLAN settings, 132
priority, 133
root bridge, 133
root guard, 135
sample network, 166
status for a port list, 145
status for a port list and VLAN, 146
status for a VLAN, 144
TCN guard, 135
traps, 156
troubleshooting, 155
VLAN and vPort limits, 148
VLAN effect on, 61
stacking
3500, 3500yl, 6200yl and 6600 switches
benefits, 261
default settings, 281
manually controlling joining, 263
minimum software versions, 261
primary VLAN, 261, 266
SNMP community names, 263
transmission interval, 282
458 Index