BLADE OS™ Command Reference HP GbE2c L2/L3 Ethernet Blade Switch Version 5.1 Advanced Functionality Software

BLADE OS 5.1 Command Reference

 Chapter 4: The Information Menu BMD00114, August 2009

/info/l2/stg

RSTP/MSTP Information

The switch software can be set to use the IEEE 802.1w Rapid Spanning Tree Protocol (RSTP) or the

IEEE 802.1s Multiple Spanning Tree Protocol (MSTP). If RSTP/MSTP is turned on (see page 273),

you can view RSTP/MSTP bridge information for the Spanning Tree Group and port-specific RSTP

information.

The following table describes the STP parameters in RSTP or MSTP mode.

Spanning Tree Group 1: On (RSTP)

VLANs: 1

Current Root: Path-Cost Port Hello MaxAge FwdDel

ffff 00:13:0a:4f:7d:d0 0 21 2 20 15

Parameters: Priority Hello MaxAge FwdDel Aging

61440 2 20 15 300

Port Prio Cost State Role Designated Bridge Des Port Type

---- ---- ---- ------ ---- ------------------- -------- ----

1 0 0 DSB

2 0 0 DSB

3 0 0 DSB

4 0 0 DSB

...

* = STP turned off for this port.

Table 27 RSTP/MSTP Parameter Descriptions

Parameter Description

Current Root The Current Root shows information about the root bridge for the

Spanning Tree. Information includes the priority (in hexadecimal format)

and MAC address of the root.

Priority (bridge) The bridge priority parameter controls which bridge on the network will

become the STP root bridge.

Hello The hello time parameter specifies, in seconds, how often the root bridge

transmits a configuration bridge protocol data unit (BPDU). Any bridge

that is not the root bridge uses the root bridge hello value.