Smart Link Collaboration Mechanisms; Smart Link Configuration Task List - H3C S5820X SERIES High Availability Configuration Manual

You can configure protected VLANs for a smart link group by referencing MSTIs.

Smart Link collaboration mechanisms

Collaboration between Smart Link and Monitor Link
Smart Link cannot sense by itself when faults occur on the uplink of the upstream devices, or when faults
are cleared. To monitor the uplink status of the upstream devices, you can configure the Monitor Link
function to monitor the uplink ports of the upstream devices. Monitor Link adapts the up/down state of
downlink ports to the up/down state of uplink ports, triggering Smart Link to perform link switchover on
the downstream device.
NOTE:
For more information about Monitor Link, see the chapter "Monitor link configuration."
Collaboration between Smart Link and CC of CFD
Smart Link cannot sense by itself when faults (for example, unidirectional link, misconnected fibers, and
packet loss) occur on the intermediate devices or network paths, or when faults are cleared. To check the
link status, Smart Link ports need to use link detection protocols. When a fault is detected or cleared, the
link detection protocols inform Smart Link to switch over the links.
With the collaboration between Smart Link and the Continuity Check (CC) function of Connectivity Fault
Detection (CFD) configured, CFD notifies the ports of fault detection events on the basis of detection
VLANs and detection ports. A port responds to a continuity check event only when the control VLAN of
the smart link group to which it belongs matches the detection VLAN.
NOTE:
For more information about the CC function of CFD, see the chapter "CFD configuration."

Smart Link configuration task list

Complete the following tasks to configure Smart Link:
Task
Configuring a smart link
device
Configuring an
associated device
Configuring protected VLANs for a smart link group
Configuring member ports for a smart link group
Configuring role preemption for a smart link group
Enabling the sending of flush messages
Configuring the collaboration between Smart Link and CC of CFD
Enabling the receiving of flush messages
96
Remarks
Required
Required
Optional
Optional
Optional
Required