request chassis sfm master switch

Syntax

Release Information

Command introduced before JUNOS Release 7.4.

Description

(M40e and M160 routers only) Control which Switching and Forwarding Module (SFM) is master.

Options

no-confirm — (Optional) Do not display a switch warning or query.

Additional Information

By default, the SFM in slot 0 (SFM0) is the master and the SFM in slot 1 (SFM1) is the backup. If you use this command to change the master, and then restart the chassis software for any reason, the master reverts to the default setting. To change the default master SFM, include the sfm statement at the [edit chassis redundancy] hierarchy level in the configuration. For more information, see the JUNOS System Basics Configuration Guide.

All installed SFMs are always working together to forward packets. If an SFM fails, the other SFMs take over and traffic continues to flow uninterrupted.

Required Privilege Level

maintenance

Related Topics

show chassis sfm

List of Sample Output

Output Fields

When you enter this command, you are provided feedback on the status of your request.

Sample Output

warning: Traffic will be interrupted while the PFE is re-initialized
Toggle mastership between system forwarding module? [yes,no] (no) yes 

Switch initiated, use “show chassis sfm” to verify

Switch initiated, use “show chassis sfm” to verify