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Configuration Guide - Ethernet Switching

CloudEngine 8800, 7800, 6800, and 5800 V200R003C00

This document describes the configuration of Ethernet services, including configuring MAC address table, link aggregation, VLANs, MUX VLAN, Voice VLAN, VLAN mapping, QinQ, GVRP, VCMP, STP/RSTP/MSTP, VBST, SEP, RRPP, ERPS, LBDT, and Layer 2 protocol transparent transmission.
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Licensing Requirements and Limitations for MSTP

Licensing Requirements and Limitations for MSTP

Involved Network Elements

Other network elements are not required.

Licensing Requirements

MSTP is a basic feature of a switch and is not under license control.

Version Requirements

Table 10-9 Products and minimum version supporting MSTP

Product

Minimum Version Required

CE8860EI

V100R006C00

CE8861EI/CE8868EI

V200R005C10

CE8850-32CQ-EI

V200R002C50

CE8850-64CQ-EI

V200R005C00

CE7850EI

V100R003C00

CE7855EI

V200R001C00

CE6810EI

V100R003C00

CE6810-48S4Q-LI/CE6810-48S-LI

V100R003C10

CE6810-32T16S4Q-LI/CE6810-24S2Q-LI

V100R005C10

CE6850EI

V100R001C00

CE6850-48S6Q-HI

V100R005C00

CE6850-48T6Q-HI/CE6850U-HI/CE6851HI

V100R005C10

CE6855HI

V200R001C00

CE6856HI

V200R002C50

CE6857EI

V200R005C10

CE6860EI

V200R002C50

CE6865EI

V200R005C00

CE6870-24S6CQ-EI/CE6870-48S6CQ-EI

V200R001C00

CE6870-48T6CQ-EI

V200R002C50

CE6875-48S4CQ-EI

V200R003C00

CE6880EI

V200R002C50

CE5810EI

V100R002C00

CE5850EI

V100R001C00

CE5850HI

V100R003C00

CE5855EI

V100R005C10

CE5880EI

V200R005C10

Feature Limitations

  • On networks that run STP, RSTP, MSTP, or VLAN-based Spanning Tree (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 an STP root bridge change, causing short service interruptions.

  • When MSTP is enabled on a ring network, MSTP 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 MSTP.

  • When MSTP multi-instance is configured, more MSTIs indicate longer MSTP BPDUs. MSTP BPDUs are sent independently in each MSTP process. When MSTP multi-process is configured, the number of outgoing MSTP BPDUs increases. When MSTP multi-instance and multi-process are configured, the default CPCAR of STP cannot meet requirements. You need to increase the default CPCAR of STP. If the default CPCAR of STP is not increased, MSTP BPDUs may be discarded.

  • BPDU protection takes effect for only the manually configured edge ports.

  • Loop protection and root protection cannot be configured on the same interface together.

  • 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.
  • For CE6870EI, In V200R001C00, the bpdu bridge enable command is not supported on the VXLAN network. 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.

    For CE switches excluding CE5880EI, CE6870EI, CE6875EI and CE6880EI, in versions earlier than V200R001C00, if the bpdu bridge enable command is configured on an access-side port on the VXLAN network connected to an STP network, BPDU packets cannot traverse the VXLAN network. This causes loops on the STP network. In V200R001C00 and later versions, 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 or a later version. 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.

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Updated: 2019-05-08

Document ID: EDOC1100004351

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