ProLiant BL p-Class GbE2 Interconnect Switch Browser-based Interface Reference Guide

Configuring the switch 141
MSTP/RSTP General Configuration
To display the following form, select Layer 2 > MSTP/RSTP > General.
HP ProLiant BL p-Class GbE2 Interconnect Switch supports the IEEE 802.1w Rapid Spanning Tree Protocol (RSTP)
and IEEE 802.1s Multiple Spanning Tree Protocol (MSTP). MSTP allows you to map many VLANs to a small
number of spanning tree groups, each with its own topology.
Up to 32 spanning tree groups can be configured on the switch. MSTP/RSTP
is turned off by default.
The following table describes the MSTP/RSTP General Configuration controls:
Table 114 MSTP/RSTP General Configuration controls
Control Description
Region Name Configures a name for the MSTP region. All devices within a MSTP region must have the same
region name.
The Region Name can have a maximum of 15 characters.
Revision Level (1-65535) Configures a version number for the MSTP region. The version is used as a numerical identifier for
the region. All devices within a MSTP region must have the same version number.
Max. Hop Count (4-60) Configures the maximum number of bridge hops a packet may to traverse before it is dropped.
The range is from 4 to 60 hops. The default is 20.
MSTP/RSTP Mode Selects either Rapid Spanning Tree Protocol (RSTP) or Multiple Spanning Tree Protocol (MSTP).
The default mode is RSTP.
MSTP/RSTP State Globally turns RSTP/MSTP on or off.
Note: When RSTP is turned on, the configuration parameters for STP group 1 apply to RSTP.
Default CIST This button resets CIST general parameters to their default values.
NOTE:
•
IEEE 802.1w standard-based RSTP implementation runs on one STG (i.e. same as one spanning tree instance) only. As
a result, if ‘rstp’ mode is selected under the /cfg/mrst/mode command, then only a single RSTP instance (default for
STG 1) is supported for all VLANs, including the Default VLAN 1.
• If multiple spanning tree instances are required, then select ‘mstp’ mode so that multiple VLANs are handled by multiple
spanning tree instances, as specified by IEEE 802.1s standard-based MSTP implementation.
• Only IEEE 802.1s MSTP supports rapid convergence using IEEE 802.1w RSTP.
• PVST+ does not support rapid convergence in current versions.