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

BLADE OS 5.1 Command Reference
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 Chapter 6: The Configuration Menu BMD00114, August 2009
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, 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.
Note – The following configurations are unsupported or have limitations:
- HP PVST+ (default Spanning Tree setting) is interoperable with Cisco Rapid PVST+ only in
fallback mode: Cisco will fall back to legacy PVST+ when detecting PVST+ BPDUs by default.
- HP MSTP/RSTP (with mode set to either ‘mstp’ or ‘rstp’) is NOT interoperable with Cisco
Rapid PVST+.
The following configurations are supported:
- HP PVST+ (default Spanning Tree setting) is interoperable with Cisco PVST+.
- HP MSTP/RSTP (with mode set to mstp) is interoperable with Cisco MST/RSTP.
- HP PVRST is interoperable with Cisco Rapid PVST+.
mode rstp|mstp|pvrst
Selects the Spanning Tree mode, as follows: Per VLAN Rapid Spanning Tree Plus (pvrst),
Rapid Spanning Tree (rstp), Multiple Spanning Tree (mstp).
The default mode is RSTP.
on
Globally turns RSTP/MSTP/PVRST ON.
Note: When RSTP is turned on, the configuration parameters for STG 1 apply to RSTP.
off
Globally turns RSTP/MSTP/PVRST OFF.
cur
Displays the current RSTP/MSTP/PVRST configuration.
Table 139 MSTP/RSTP/PVRST Configuration Menu Options (/cfg/l2/mrst)
Command Syntax and Usage