Licensing Requirements and Limitations for STP/RSTP
Involved Network Element
Other network elements also need to support STP or RSTP.
Licensing Requirements
STP or RSTP is a basic function of the switch, and as such is controlled by the license for basic software functions. The license for basic software functions has been loaded and activated before delivery. You do not need to manually activate it.
Version Requirements
Product |
Minimum Version Required |
|---|---|
CE12804/CE12808/CE12812 |
V100R001C00 |
CE12816 |
V100R003C00 |
CE12804S/CE12808S |
V100R005C00 |
CE12800E |
V200R002C50 |
For details about the mapping between software versions and switch models, see the Hardware Query Tool.
Software version evolution: V100R001C00 -> V100R002C00 -> V100R003C00 -> V100R003C10 -> V100R005C00 -> V100R005C10 -> V100R006C00 -> V200R001C00 -> V200R002C50 -> V200R003C00 -> V200R005C00 -> V200R005C10 -> V200R019C00 -> V200R019C10
Feature Limitations
On networks that run STP/RSTP/MSTP/VBST, configure an optimal core switch as the root bridge to ensure stability of the STP Layer 2 network. Otherwise, new access devices may trigger STP root bridge switching, causing short service interruptions.
- When STP or RSTP is enabled on a ring network, STP or RSTP immediately starts spanning tree calculation. Parameters such as the device priority and port priority affect spanning tree calculation, and changing these parameters may cause network flapping. To ensure fast and stable spanning tree calculation, perform basic configurations on the switch and interfaces before enabling STP or RSTP.
RSTP uses a single spanning tree instance on the entire network. As a result, performance deterioration cannot be prevented when the network scale grows. Therefore, the network diameter cannot be larger than 7.
BPDU protection takes effect only for the manually configured edge port.
Loop prevention and root protection cannot be configured on the same interface.
- In versions earlier than V200R001C00, STP cannot be configured on a user-side interface of a VXLAN tunnel. Starting from V200R001C00, STP can be configured on a user-side interface of a VXLAN tunnel that accesses the VXLAN as a VLAN. In V200R002C50 and later versions, STP can be configured on a user-side interface of a VXLAN tunnel when the device is deployed to provide VXLAN access through a Layer 2 sub-interface or to provide VLAN access.
- In V200R001C00, the bpdu bridge enable command is not supported on the VXLAN network. If this command is configured in a version earlier than V200R001C00, it will be deleted from the device configurations after an upgrade to V200R001C00. To enable BPDU packets to traverse the VXLAN network, run the undo mac-address bpdu [ mac-address [ mac-address-mask ] ] command in the system view. In this command, mac-address specifies the MAC address of BPDU packets that need to traverse the VXLAN network.