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.


Configuration Guide - Reliability

S1720, S2700, S5700, and S6720 V200R010C00

This document describes the configuration of BFD, DLDP, VRRP, SmartLink, CFM, EFM, Y.1731 and MAC swap loopback to ensure reliability on the device.
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).


Figure 6-11  Example of Monitor Link implementation

After a Monitor Link group is configured, the uplink interface is monitored in real time. When the uplink interface fails (link failure, unidirectional OAM connectivity, or failure to establish OAM connections), all the downlink interfaces in Up state in the Monitor Link group are forcibly shut down. When the uplink recovers, the downlink interfaces are restored to the Up state.

In Figure 6-11, if the uplink of Interface1 fails, Monitor Link forcibly switches Interface2 to Error-Down state. Then SwitchC detects that a fault has occurred on the link between SwitchB and SwitchA. When the uplink of Interface1 recovers, Monitor Link unblocks Interface2.

When a Smart Link group is used as the uplink interface, the uplink interface is considered faulty only when both the master and slave interfaces of the Smart Link group are in inactive or Down state. When downlink interfaces are in an aggregation group, all the interfaces in the aggregation group are forcibly shut down if the uplink interface fails. When the uplink interface recovers, all the downlink interfaces in the aggregation group recover.

Updated: 2019-08-21

Document ID: EDOC1000141941

Views: 90508

Downloads: 512

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