Juniper JUNOS OS 10.3 - SOFTWARE Manual page 1124

Complete Software Guide for Junos
Related
Documentation
Configuring the Timer for the Backup Member to Start Using Its Own MAC Address, as
Master of Virtual Chassis (CLI Procedure)
Related
Documentation
1028
®
OS for EX Series Ethernet Switches, Release 10.3
or "Connecting and Configuring an EX Series Switch (J-Web Procedure)" on page 189
for details.
To configure the VME:
[edit]
user@SWA-0# set interfaces vme unit 0 family inet address /ip-address/mask/
Example: Configuring a Virtual Chassis with a Master and Backup in a Single Wiring
Closet on page 947
Understanding Global Management of a Virtual Chassis Configuration on page 929
When a backup member takes control of a Virtual Chassis configuration because of a
reset or other temporary failure, the backup uses the MAC address of the old master.
This helps to ensure a smooth transition of mastership with no disruption to network
connectivity.
The MAC persistence timer is used in situations when the master is no longer a member
of the Virtual Chassis configuration, because it has been physically disconnected or
removed. If the old master does not rejoin the Virtual Chassis configuration before the
timer elapses, the new master starts using its own MAC address.
The default timer value is 10 minutes. There are no minimum or maximum limits.
Before you begin configuring the timer, ensure that you have at least two member switches
in the Virtual Chassis configuration. To configure or modify the MAC persistence timer,
use the following command:
[edit virtual-chassis]
user@switch# set mac-persistence-timer 30
This command modifies the MAC persistence timer value to specify a timer value of 30
minutes rather than the default timer value of 10 minutes.
Configuring a Virtual Chassis (CLI Procedure) on page 1011
Configuring a Virtual Chassis (J-Web Procedure) on page 1015
Understanding Virtual Chassis Components on page 924
Copyright © 2010, Juniper Networks, Inc.