Availability:
This feature was introduced in M2000 V200R009.

Summary:

Dual homing is a disaster tolerance mechanism that prevents the disconnection of SoftX3000
services in the managed domain due to switch or system breakdown or system faults to ensure
the secure and reliable operation of core networks.

Benefits:

Dual homing configuration management simplifies operations and facilitates the management
of NEs configured with dual homing relationships.

Description:

In dual homing networking mode, one MGW is controlled by two SoftX3000 devices. The
two SoftX3000 devices are referred to as a dual homing pair. Normally, each MGW is
registered only on the active SoftX3000. When the active SoftX3000 is faulty, the MGW can
be registered on the standby SoftX3000 to ensure the continuous and normal network
communication services. The active and standby SoftX3000 devices check the status of each
other through heartbeats.

The M2000 can automatically detect dual homing relationships and displays the relationships

in the topology view.

As one type of the basic data of the SoftX3000, dual homing data is used to define virtual

nodes, working modes, heartbeat links, and backup routes of dual homing. The M2000
supports the consistency check of dual homing data and generates comparison reports. Based
on the check result, the M2000 can modify inconsistent NE data, or users can synchronize
correct data from one switch to another switch. Users can also manually correct the
inconsistent NE data, which must be different according to requirements, in a dialog box, and
send the corrected data to the NE. This ensures data consistency between switches in a dual
homing pair. 

Users can send dual homing MML commands to both SoftX3000 devices in the dual homing

pair but not through broadcast. In addition, users can send the MML commands either to one
or both SoftX3000 devices in the pair .

Enhancement:

None

Dependency:

None

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