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

S9300, S9300E, and S9300X V200R012C00 Configuration Guide - Ethernet Switching

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, 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).
Configuring the Maximum Number of Connections in an Eth-Trunk that Affects Spanning Tree Calculation

Configuring the Maximum Number of Connections in an Eth-Trunk that Affects Spanning Tree Calculation

Context

Path costs affect spanning tree calculation and changing path costs triggers spanning tree recalculation. The path cost of an interface is affected by its bandwidth, so you can change the interface bandwidth to affect spanning tree calculation.

In Figure 13-17, SwitchA and SwitchB are connected through two Eth-Trunk links. Eth-Trunk 1 has three member interfaces in Up state and Eth-Trunk 2 has two member interfaces in Up state. Each member link has the same bandwidth, and SwitchA is selected as the root bridge.
  • Eth-Trunk 1 has higher bandwidth than Eth-Trunk 2. After STP calculation, Eth-Trunk 1 on SwitchB is selected as the root port and Eth-Trunk 2 is selected as the alternate port.
  • If the maximum number of connections affecting bandwidth of Eth-Trunk 1 is set to 1, the path cost of Eth-Trunk 1 is larger than the path cost of Eth-Trunk 2. Therefore, the two devices perform spanning tree recalculation. Then Eth-Trunk 1 on SwitchB becomes the alternate port and Eth-Trunk 2 becomes the root port.
Figure 13-17  Configuring the maximum number of connections in an Eth-Trunk

The maximum number of connections affects only the path cost of an Eth-Trunk interface participating in spanning tree calculation, and does not affect the actual bandwidth of the Eth-Trunk link. The actual bandwidth for an Eth-Trunk link depends on the number of active member interfaces in the Eth-Trunk.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run interface eth-trunk trunk-id

    The Eth-Trunk interface view is displayed.

  3. Run max bandwidth-affected-linknumber link-number

    The maximum number of connections affecting the Eth-Trunk bandwidth is set.

    By default, the maximum number of connections affecting the bandwidth of an Eth-Trunk is 8.

Translation
Download
Updated: 2019-01-18

Document ID: EDOC1100038290

Views: 113846

Downloads: 24

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