Description

An MX BRAS device continuously reports a syslog message caused by an invalid license.

Symptoms

An MX BRAS device continuously reports the following syslog message:

Nov 9 11:10:11 2016 MX960-1-re0 rshd[19888]: root@re1 as root: cmd='rcp -T -f /config/usage.db'
Nov 9 11:10:21 2016 MX960-1-re0 rshd[19892]: root@re1 as root: cmd='rcp -T -f /config/usage.db'

There was no impact to service. After disabling GRES/NSR, the syslog messages stopped being reported.

Solution

The usage.db file is used to store the license usage information. It is stored under /config. This syslog message may be caused by license synchronizing failure. Checking the system license status, it was discovered that one license became invalid. 

user@MX960-1-re0> show system license 
License usage: 
                                 Licenses     Licenses    Licenses    Expiry
  Feature name                       used    installed      needed 
  ...
  scale-subscriber                  13554        32000           0    invalid
  ...

{BACKUP.EN_US}
user@MX960-1-re1> show system license 
License usage: 
                                 Licenses     Licenses    Licenses    Expiry
  Feature name                       used    installed      needed 
  ...
  scale-subscriber                  13561        32000           0    invalid
  ...

To find the reason for why a license becomes invalid and how to reinstall a license, refer to  KB26839 - [Subscriber Management] scale-subscriber license starts showing expiry when subscribers are reaching license limit [juniper.net]

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