Alcatel-Lucent OmniSwitch 6250, Cli Reference Manual, Page: 520 / 2018

Distributed Spanning Tree Commands
page 16-80 OmniSwitch 6250 CLI Reference Guide November 2009
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If a 16-bit path cost value is in use and the path_cost for a link aggregate is set to zero, the following
default values based on link speed and link aggregate size are used. Note that for Gigabit ports the
aggregate size is not applicable in this case:
Examples
-> bridge mode flat
-> bridge 1x1 200 4/1 path cost 4
-> bridge 1x1 300 16 path cost 200000
-> bridge mode 1x1
-> bridge 1x1 400 5/10 path cost 19
-> bridge 1x1 500 1/24 path cost 20000
Release History
Release 6.6.1; command was introduced.
Related Commands
MIB Objects
vStpInsPortTable
vStpInsPortNumber
vStpInsPortPathCost
Link Speed
Aggregate Size
(number of links)
Default Path
Cost Value
10 Mbps 2 60
4 40
8 30
100 Mbps 2 12
4 9
8 7
1 Gbps N/A 3
10 Gbps N/A 1
bridge mode Selects the Spanning Tree operating mode (flat or 1x1) for the switch.
bridge slot/port path cost Implicit command for configuring the Spanning Tree path cost value for
a port or an aggregate of ports that applies to the specified CIST or
VLAN instance.
bridge cist slot/port path cost Explicit command for configuring the Spanning Tree path cost value for
a port or an aggregate of ports for the CIST instance when the switch is
operating in either the 1x1 or flat mode.
bridge msti slot/port path cost Explicit command for configuring the Spanning Tree path cost value for
a port or an aggregate of ports for an MSTI when the switch is operating
in either the 1x1 or flat Spanning Tree mode.