Setting The Spanning Tree Mode; Configuring An Mst Region - HP 3100 Series Configuration Manual

Task
Configuring Digest Snooping
Configuring No Agreement Check
Configuring TC snooping
Configuring protection functions
Disabling the device to reactivate edge ports shut down by BPDU guard

Setting the spanning tree mode

The spanning tree modes include:
•
STP mode—All ports of the device send STP BPDUs. Select this mode when the peer device
of a port supports only STP.
•
RSTP mode—All ports of the device send RSTP BPDUs. A port in this mode automatically
transitions to the STP mode when receiving STP BPDUs from the peer device, and a port in this
mode does not transition to the MSTP mode when receiving MSTP BPDUs from the peer
device.
•
MSTP mode—All ports of the device send MSTP BPDUs. A port in this mode automatically
transitions to the STP mode when receiving STP BPDUs from the peer device, and a port in this
mode does not transition to the RSTP mode when receiving RSTP BPDUs from the peer
device.
•
PVST mode—The device sends PVST BPDUs through all ports and maintains a spanning tree
for each VLAN. The number of VLANs that PVST can maintain instances for depends on the
switch model. Suppose the number is n, which is 16 on the HPE 3100 v2. When you configure
PVST on devices of different models in a network, to avoid network failures, make sure that the
number of VLANs for which PVST maintains instances does not exceed the lowest n.
The MSTP mode is compatible with the RSTP mode, and the RSTP mode is compatible with the STP
mode. The PVST mode's compatibility with the other spanning tree mode varies by port type:
•
On an access port, the PVST mode is compatible with any other spanning tree mode in any
VLAN.
•
On a trunk or hybrid port, the PVST mode is compatible with any other spanning tree mode in
only VLAN 1.
To set the spanning tree mode:
Step
Enter system view.
1.
Set the spanning tree mode.
2.

Configuring an MST region

Two or more spanning tree devices belong to the same MST region only if they are configured to
have the same format selector (0 by default, not configurable), MST region name, MST region
revision level, and the same VLAN-to-instance mapping entries in the MST region, and they are
connected via a physical link.
Command
system-view
stp mode { stp | rstp | mstp | pvst }
65
Remarks
Optional
Optional
Optional
Optional
Optional
Remarks
N/A
MSTP mode by default.