H3C Technologies H3C S10500 Series Switches - Manual (Page 51)

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Configuring fabric reconfiguration
IMPORTANT:
The fabric reconfiguration feature takes effects only when the fabric configuration feature is enabled.
The fabric reconfiguration occurs in one of the following situations:
• A network reconstruction (for example, two fabrics are merged).
• An external intervention (for example, the administrator uses a command to initiate
reconfiguration).
The fabric reconfiguration triggers principal switch selection, domain ID assignment, and FC address
assignment throughout the fabric.
The fabric reconfiguration includes the following types:
• Disruptive reconfiguration—Floods Reconfigure Fabric (RCF) frames throughout the fabric, and
notifies all switches to perform a disruptive reconfiguration. During the reconfiguration procedure,
each switch clears all data and performs renegotiation. Data transmission in the fabric is disrupted.
• Nondisruptive reconfiguration—Floods Build Fabric (BF) frames throughout the fabric, and notifies
all switches to perform a nondisruptive reconfiguration. During the reconfiguration procedure, each
switch tries to save the last running data for its domain ID to remain unchanged. Thus, data
transmission in the fabric is not disrupted.
Depending on the triggering conditions, the fabric reconfiguration includes auto reconfiguration and
manual reconfiguration.
• When two fabrics are merged:
{
The switches automatically perform a disruptive reconfiguration if the domain ID lists overlap.
{
The system automatically performs a nondisruptive reconfiguration when the following
conditions exist:
− The principal switch information of the two fabrics is different.
− The domain ID lists are not empty or do not overlap.
{
You can manually initiate a disruptive reconfiguration to trigger the fabric reconfiguration if
ports are isolated and priority values of switches are modified.
• When the principal switch in a fabric is down, the system automatically performs a nondisruptive
reconfiguration.
Configuring the auto fabric reconfiguration feature
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter VSAN view. vsan vsan-id N/A
3. Enable the auto fabric
reconfiguration feature.
domain auto-reconfigure enable
By default, the auto fabric
reconfiguration feature is disabled.