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


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


NE40E V800R010C10SPC500 Feature Description - IP Services 01

This is NE40E V800R010C10SPC500 Feature Description - IP Services
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).
Interface-based UCMP

Interface-based UCMP

Types of Interfaces Supporting Interface-based UCMP

  • Ethernet interfaces

  • GE interfaces

  • POS interfaces

  • Serial interfaces

Enabling Interface-based UCMP

Interface-based UCMP requires that multiple physical outbound interfaces that support interface-based UCMP exist and UCMP enabled on each interface. If one of these interfaces does not support UCMP, traffic is evenly distributed on all interfaces, regardless of the UCMP function enabled on other interfaces.

To enable the interface board to record bandwidth information about load balancing on each interface, you must run the shutdown and undo shutdown commands to restart the interfaces. As a result, the routing management (RM) module re-advertises routes to the interface board. When advertising routes, the FIB module on the MPU checks whether UCMP is enabled on outbound interfaces and records bandwidth information of the UCMP-enabled interfaces in the messages. The interface board calculates the distribution ratio of traffic according to the bandwidth ratio of interfaces that are used for load balancing.

Interface Bandwidth Change Processing

The bandwidth derives from physical link information of interfaces and cannot be manually changed.


  • If interface-based UCMP is enabled, global UCMP cannot be enabled. Similarly, if global UCMP is enabled, interface-based UCMP cannot be enabled.

  • The bandwidth accuracy for the interface board is Mbit/s, which supports high-speed links.

  • You must run the shutdown and undo shutdown commands in sequence after enabling UCMP on an interface. As a result, traffic is interrupted. Global UCMP avoids this situation by providing more functions.

Updated: 2019-01-03

Document ID: EDOC1100055041

Views: 12537

Downloads: 55

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