Support Support Downloads Knowledge Base Service Request Manager My Juniper Community

Knowledge Base

Search our Knowledge Base sites to find answers to your questions.

Ask All Knowledge Base Sites All Knowledge Base Sites JunosE Defect (KA)Knowledge BaseSecurity AdvisoriesTechnical BulletinsTechnotes Sign in to display secure content and recently viewed articles

[EX] The maximum timer value of 'mac-persistence-timer' has been changed from 12.1R3 or later

0

0

Article ID: KB25650 KB Last Updated: 21 Mar 2013Version: 2.0
Summary:
This article provides information about the mac-persistence timer and how its behavior has been changed from 12.1R3 or later.

Symptoms:

Cause:
  • The purpose of the mac-persistence timer is to allow time for the accidental reboot of master.

  • So, the maximum timer value that can be configured has been changed to 60 minutes from no limit.

  • This change is implemented in11.4R5, 12.1R3, and 12.2R1 Junos versions.

For 12.1R2 or earlier:

  • The default timer value is 10 minutes.

  • There are no minimum and maximum limits.

  • However, if you want to extend it to the maximum value, it recommended to use 3000000.
    root@EX4200VC# set virtual-chassis mac-persistence-timer ?
    Possible completions:
    <timer> MAC persistence time (minutes)
    + apply-groups Groups from which to inherit configuration data
    + apply-groups-except Don't inherit configuration data from these groups

For 12.1R3 or later:

  • The default timer value is 10 minutes.

  • There is no minimum limit; but the maximum timer value is 60 minutes.

  • There is a disable command:
    root@EX4200VC# set virtual-chassis mac-persistence-timer ?
    Possible completions:
    <timer> MAC persistence time (0..60 minutes)
    + apply-groups Groups from which to inherit configuration data
    + apply-groups-except Don't inherit configuration data from these groups
    disable Disable MAC persistence timer
Solution:
As a workaround to configure the value of the mac-persistence timer to more than 60 minutes on 12.1R3 or later, you can disable it with the following command:
set virtual-chassis mac-persistence-timer disable
Comment on this article > Affected Products Browse the Knowledge Base for more articles related to these product categories. Select a category to begin.

Security Alerts and Vulnerabilities

Security Alerts and Vulnerabilities Product Alerts and Software Release Notices Problem Report (PR) Search Tool EOL Notices and Bulletins JTAC User Guide Customer Care User Guide Pathfinder SRX High Availability Configurator SRX VPN Configurator Training Courses and Videos End User Licence Agreement Global Search