No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

Configuration Guide - Ethernet Switching

S7700 and S9700 V200R012C00

This document describes the configuration of Ethernet services, including configuring MAC address table, link aggregation, VLANs, VLAN aggregation, MUX VLAN, VLAN termination, Voice VLAN, VLAN mapping, QinQ, GVRP, VCMP, STP/RSTP/MSTP, VBST, SEP, RRPP, ERPS, LBDT, HVRP, and Layer 2 protocol transparent transmission.
Rate and give feedback :
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
(Optional) Configuring the Root Bridge and Secondary Root Bridge

(Optional) Configuring the Root Bridge and Secondary Root Bridge

Context

Although the root bridge of a spanning tree is usually and automatically calculated, you can also manually configure a root bridge or secondary root bridge. The following provides more details regarding configuring a root bridge or secondary root bridge:
  • Configuring a root bridge: A spanning tree can have only one effective root bridge. When two or more devices are specified as root bridges for a spanning tree, the device with the smallest MAC address is elected as the root bridge.
  • Configuring a secondary root bridge: You can specify multiple secondary root bridges for each spanning tree. When the root bridge fails or is powered off, a secondary root bridge becomes the new root bridge. If a new root bridge is specified, the secondary root bridge will no longer be the root bridge. If there are multiple secondary root bridges, the one with the smallest MAC address becomes the root bridge of the spanning tree.
NOTE:
It is recommended that you specify the root bridge and secondary root bridge when configuring STP/RSTP.

Procedure

  • Configure a device as the root bridge.
    1. Run system-view

      The system view is displayed.

    2. Run stp root primary

      The device is configured as the root bridge.

      By default, a device does not function as the root bridge. After you run this command, the priority value of the device is set to 0 and cannot be changed.

  • Configure a device as the secondary root bridge.
    1. Run system-view

      The system view is displayed.

    2. Run stp root secondary

      The device is configured as the secondary root bridge.

      By default, a device does not function as the secondary root bridge. After you run this command, the priority value of the device is set to 4096 and cannot be changed.

Translation
Download
Updated: 2019-01-18

Document ID: EDOC1100038843

Views: 93694

Downloads: 67

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Share
Previous Next