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[Subscriber Management] How to set dynamic-profile-options versioning under BRAS operation condition



Article ID: KB31134 KB Last Updated: 01 Apr 2021Version: 3.0

This article explains how to enable dynamic-profile-options versioning during the subscriber's login/logout process on an MX device.

A user may want to modify the dynamic profile. Any subscriber that logs in after a dynamic profile modification uses the latest version of the dynamic profile. Subscribers that are already active continue to use the older version of the dynamic profile until they log out or their session terminates. However, after the dynamic profiles are configured, you cannot enable or disable them.

user@MX480-re0# set system dynamic-profile-options versioning 

user@MX480-re0# commit 
error: Cannot modify dynamic-profile-option versioning, dynamic profile is configured.
configuration check succeeds
error: foreign reconfiguration failed
error: remote commit-configuration failed on re1
Under the operational MX device, dynamic-profile has been configured and it is in use by the subscriber. For this reason, after deleting dynamic profile related configuration, "commit" will still failed.

{MASTER}[edit groups jw-ae-pppoe dynamic-profiles]
user@MX480-re0# commit 
error: Modified profile: pppoe-ae is in use by subscriber
error: foreign file propagation (ffp) failed

This procedure includes loading "factory-default." Take the following steps from the CLI:

  1. Save the current configuration:

  2. user@MX480-re0# save 2016-08-30.conf
    Wrote 135667 lines of configuration to '2016-08-30.conf'
    user@MX480-re0# run file list 

  3. Check the subscriber slot:

  4. user@MX480-re0> show subscribers summary slot 
    Interface           Count 
    ae0: xe-0           3428               
    ae0: xe-2           3428               

  5. Offline the subscriber slot and make sure there are no subscribers on this device:

  6. user@MX480-re0> request chassis fpc offline slot 0 
    user@MX480-re0> request chassis fpc offline slot 2    
    Offline initiated, use "show chassis fpc" to verify
    user@MX480-re0> show chassis fpc 
                         Temp  CPU Utilization (%)   Memory    Utilization (%)
    Slot State            (C)  Total  Interrupt      DRAM (MB) Heap     Buffer
      0  Offline         ---Offlined by cli command---
      2  Offline         ---Offlined by cli command---
    user@MX480-re0> show subscribers summary slot 
    Total Subscribers: 0            

  7. Load the factory-default configuration and commit. Then set the root-authentication password, which is a mandatory configuration.

  8. user@MX480-re0#load factory-default 
    warning: activating factory configuration
    user@MX480-re0# set system root-authentication plain-text-password
    New password:
    Retype new password:
    user@MX480-re0# set system login user user class super-user
    user@MX480-re0# commit 
    error: WARNING: Chassis configuration for network services has been changed. A system reboot is mandatory.  Please reboot the system NOW. Continuing without a reboot might result in unexpected system behavior.
    commit complete            

  9. Load merge the saved configuration and commit. Before load merge saved configuration, the user should be created first. After the user is created, you can find the configuration file.

  10. user@MX480-re0# run file list /var/home/user
    error: no local user:user
    user@MX480-re0# set system login user user class super-user
    user@MX480-re0# commit 
    user@MX480-re0# load merge 2016-08-30.conf 
    load complete
    user@MX480-re0# commit 
    warning: uid changed for labroot (2000->2012)
    configuration check succeeds
    commit complete
    commit complete           

  11. Check the configuration status since the saved configuration has no "fpc power off" knob. After commit, those offline FPC will be online automatically.

  12. user@MX480-re0# run show subscribers summary slot 
    Interface           Count 
    ae0: xe-0           4991               
    ae0: xe-2           4991               
    Total Subscribers: 4991            
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