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Hierarchy Level


Configure fabric interface specific options in chassis clusters.

The fabric is the data link between the nodes and is used to forward traffic between the chassis. Each node in the chassis requires a fabric interface configured. To create a fabric link between the two chassis requires the creation of a special interface called the fab interface. Node 0’s fabric interface, called fab0, and node 1’s fabric interface, called fab1.

Only the same type of interfaces can be configured as fabric children, and you must configure an equal number of child links for fab0 and fab1.

You can enable and disable the fabric link on SRX1500, SRX4100, SRX4200, and SRX4600 devices.

From configuration mode,

run the set interfaces fab0 disable command to disable the fabric link interface fab0 and set interfaces fab1 disable command to disable the fabric link interface fab1.

run the delete interfaces fab0 disable to enable fabric link interface fab0 and delete interfaces fab1 disable to enable fabric link interface fab1.


When you run the system autoinstallation command, the command will configure unit 0 logical interface for all the active state physical interfaces. However, a few commands such as fabric-options do not allow the physical interface to be configured with a logical interface. If the system autoinstallation and the fabric-options commands are configured together, the following message is displayed:


member-interface-name—Member interface name.

Required Privilege Level

interface—To view this statement in the configuration.

interface-control—To add this statement to the configuration.

Release Information

Statement introduced in Junos OS Release 8.5.