Alcatel-Lucent OmniSwitch 6250, Cli Reference Manual, Page: 564 / 2018

Distributed Spanning Tree Commands
page 16-124 OmniSwitch 6250 CLI Reference Guide November 2009
-> bridge mode 1x1
-> show spantree cist
Per Vlan Spanning Tree is enforced !! (1x1 mode)
INACTIVE Spanning Tree Parameters for Cist
Spanning Tree Status : ON,
Protocol : IEEE Multiple STP,
Priority : 32768 (0x8000),
System Max Age (seconds) = 20,
System Forward Delay (seconds) = 15,
System Hello Time (seconds) = 2
output definitions
STP Status The Spanning Tree state for the instance ( on or off ).
Protocol The Spanning Tree protocol applied to the CIST ( STP, RSTP, or
MSTP ). Configured through the bridge protocol command.
Mode The Spanning Tree operating mode for the switch ( 1x1 or flat ). Config-
ured through the bridge mode command.
Priority The Spanning Tree bridge priority for the instance. The lower the num-
ber, the higher the priority. Configured through the
bridge priority
command.
Bridge ID The bridge identifier for this Spanning Tree instance. Consists of the
bridge priority value (in hex) concatenated with the dedicated bridge
MAC address.
CST Designated Root The bridge identifier for the root of the flat mode CIST instance. This
field only appears when MSTP is active on the switch.
Cost to CST Root The cost of the path to the root of the flat mode CIST instance. This
field only appears when MSTP is active on the switch.
Next CST Best Cost The cost of the next best root port for the flat mode CIST instance. This
field only appears when MSTP is active on the switch.
Designated Root The bridge identifier for the root of the Spanning Tree for this instance.
Cost to Root Bridge The cost of the path to the root for this Spanning Tree instance.
Root Port The port that offers the lowest cost path from this bridge to the root
bridge for this Spanning Tree instance.
Next Best Root Cost The cost of the next best root port for this Spanning Tree instance.
Next Best Root Port The port that offers the next best (second lowest) cost path to the root
bridge for this Spanning Tree instance.
Tx Hold Count The count to limit the transmission of BPDU through the port.
Topology Changes The number of topology changes detected by this Spanning Tree
instance since the management entity was last reset or initialized.
Topology age The amount of time (in hundredths of seconds) since the last topology
change was detected by this Spanning Tree instance (
hh:mm:ss or dd
days and hh:mm:ss ).
Max Age The amount of time (in seconds) that Spanning Tree Protocol informa-
tion is retained before it is discarded. Configured through the
bridge
max age command.