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Configuration Menu 114
Table 113 802.1x Global Configuration Menu options
Command Description
cur Displays current global 802.1x parameters.
Rapid Spanning Tree Protocol / Multiple Spanning Tree Protocol
configuration
Command: /cfg/l2/mrst
[Multiple Spanning Tree Menu]
cist - Common and Internal Spanning Tree menu
name - Set MST region name
version - Set Version of this MST region
maxhop - Set Maximum Hop Count for MST (4 - 60)
mode - Spanning Tree Mode
on - Globally turns RSTP/MSTP ON
off - Globally turns RSTP/MSTP OFF
cur - Display current MST parameters
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.
You can configure up to 32 spanning tree groups on the switch. MRST is turned off by default.
NOTE: When Multiple Spanning Tree is turned on, VLAN 1 is moved from Spanning Tree Group 1 to the
Common Internal Spanning Tree (CIST). When Multiple Spanning Tree is turned off, VLAN 1 is moved back to
Spanning Tree Group 1.
The following table describes the Multiple Spanning Tree Configuration Menu options.
Table 114 Multiple Spanning Tree Configuration Menu options
Command Description
cist Displays the Common Internal Spanning Tree (CIST) Menu.
name <1-32 characters> Configures a name for the MSTP region. All devices within a MSTP region must
have the same region name.
rev <0-65535> Configures the revision level for the MSTP region. The revision level is used as a
numerical identifier for the region. All devices within a MSTP region must have the
same revision level number. The range is 0-65535.
maxhop <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.
mode rstp|mstp Selects either Rapid Spanning Tree mode (rstp) or Multiple Spanning Tree mode
(mstp). The default mode is RSTP.
on Globally turn RSTP/MSTP ON.
NOTE: When RSTP is turned on, the configuration parameters for STP group 1 apply to RSTP.
off Globally turn RSTP/MSTP OFF.
cur Displays the current RSTP/MSTP configuration.
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.
• IEEE 802.1s MSTP supports rapid convergence using IEEE 802.1w RSTP.
• PVST+ does not support rapid convergence in current versions.