Distributed Spanning Tree Commands
page 16-118 OmniSwitch 6250 CLI Reference Guide November 2009
-> show spantree 1
Spanning Tree Parameters
Spanning Tree Status : ON,
Protocol : IEEE Rapid STP,
mode : FLAT (Single STP),
Priority : 32768 (0x8000),
Bridge ID : 8000-00:d0:95:57:3a:9e,
Designated Root : 8000-00:00:e8:00:00:00,
Cost to Root Bridge : 71,
Root Port : Slot 1 Interface 1,
Next Best Root Cost : 0,
Next Best Root Port : None,
Tx Hold Count : 6,
Topology Changes : 8,
Topology age : 00:00:02,
Current Parameters (seconds)
Max Age = 20,
Forward Delay = 15,
Hello Time = 2
Parameters system uses when attempting to become root
System Max Age = 20,
System Forward Delay = 15,
System Hello Time = 2
output definitions
Spanning Tree Path Cost
Mode
The Spanning Tree path cost mode for the switch (32 BIT or AUTO)
Configured through the bridge path cost mode command.
Bridge The CIST instance, referred to as bridge 1 when either STP (802.1D) or
RSTP (802.1W) is the active protocol in the flat mode.
Spanning Tree Status The Spanning Tree state for the CIST instance (ON or OFF).
Protocol The Spanning Tree protocol applied to the instance (STP or RSTP).
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.
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.
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