Juniper JUNOS OS 10.3 - SOFTWARE Manual page 1149

mac-persistence-timer
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Copyright © 2010, Juniper Networks, Inc.
mac-persistence-timer minutes;
[edit virtual-chassis]
Statement introduced in Junos OS Release 9.0 for EX Series switches.
If the master is physically disconnected or removed from the Virtual Chassis configuration,
the MAC persistence timer determines how long the backup (new master) continues to
use the address of the old master. When the MAC persistence timer expires, the backup
(new master) begins to use its own MAC address.
There are no minimum or maximum timer limits.
10 minutes
routing—To view this statement in the configuration.
routing-control—To add this statement to the configuration.
Configuring the Timer for the Backup Member to Start Using Its Own MAC Address, as
Master of Virtual Chassis (CLI Procedure) on page 1028
Understanding Virtual Chassis Components on page 924
Chapter 48: Configuration Statements for Virtual Chassis
1053