Smart Link Configuration Task List - 3Com S7906E Configuration Manual

S7900e family release 6600 series

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Command reference manual (2327 pages)

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configured with role preemption, GE2/0/1 takes over to forward traffic as soon as the former master link

recovers, while GE2/0/2 is automatically blocked and placed in the standby state.

Load sharing mechanism

A ring network may carry traffic of multiple VLANs. Smart link can forward traffic of different VLANs in

different smart link groups, thus implementing load sharing.

To implement load sharing, you can assign a port to multiple smart link groups (each configured with

different protected VLANs), making sure that the state of the port is different in these smart link groups.

In this way, traffic of different VLANs can be forwarded along different paths.

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

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.

For more information about the CC function of CFD, refer to Connectivity Fault Detection Configuration

in the High Availability Volume.