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

CX11x, CX31x, CX710 (Earlier Than V6.03), and CX91x Series Switch Modules V100R001C10 Configuration Guide 12

The documents describe the configuration of various services supported by the CX11x&CX31x&CX91x series switch modules The description covers configuration examples and function configurations.
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).
Principles of Monitor Link

Principles of Monitor Link

This section describes the principles of Monitor Link.

Basic Concepts

Monitor Link monitors the uplink interface status and changes the downlink interface status when the uplink interface status changes. The uplink interface and downlink interfaces form a Monitor Link group.

Figure 11-77 Networking of Monitor Link
Monitor Link Group

A member of the Monitor Link group can be a single interface, static aggregation group, manual aggregation group, or Smart Link group. A Smart Link group can only function as the uplink interface. The downlink interface status changes with the uplink interface status. As shown in Figure 11-77, Interface1 and Interface2 form a Monitor Link group, and Interface3 and Interface4 form a Monitor Link group.

Uplink Interface

An uplink interface is monitored by the downlink interfaces in a Monitor Link group. If all uplink interfaces fail, the Monitor Link group is faulty, and all the downlink interfaces in the Monitor Link group are forcibly shut down. As shown in Figure 11-77, Interface1 and Interface3 are uplink interfaces. When a Smart Link group is used as the uplink interface, the uplink interface is considered as faulty only when both the master and slave interfaces of the Smart Link group are in inactive or Down state. As shown in Figure 11-78, the Smart Link group is used as the uplink interface of the Monitor Link group.

Figure 11-78 Hybrid networking of Smart Link and Monitor Link
Downlink Interface

Downlink interfaces monitor the uplink interface in the same Monitor Link group. The fault of a downlink interface does not affect the uplink interface or the other downlink interfaces. As shown in Figure 11-77, Interface2 and Interface4 are downlink interfaces.

Implementation

Figure 11-79 Networking of Monitor Link

After a Monitor Link group is configured, the uplink interface is monitored in real time. When all uplink interfaces fail (link fault, 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 restore to the Up state.

As shown in Figure 11-79, if the uplink of Interface1 fails, Monitor Link forcibly switches Interface2 to 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.

NOTE:
  • When a Smart Link group is used as the uplink interface, the uplink interface is considered as 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.

Translation
Download
Updated: 2019-08-09

Document ID: EDOC1000041694

Views: 57160

Downloads: 3617

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