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54 Nortel Ethernet Routing Switch 2500 Series stacking
Ensure that the new switch is set to factory default values. Then,
if the unit is a standalone ERS 2500 switch, ensure that a valid
stacking license.dat file is installed on the switch and the rear ports
are operating in Stacking Mode. If the unit is a Stack Enabled
ERS 2500 switch, then the unit is ready for adding or replacing.
For information on installing a stacking license, see "Standalone
configuration with license files" (page 40).
3
Download the configuration file to the new unit.
Manually insert the new unit in the stack. Turn off the new unit
inserted into the stack and manually replace the failed unit in the
stack. Plug in the stack cables into the appropriate cascade ports.
4
Power up the new unit in the stack.
The new unit joins the stack and the configuration of the failed unit is
replicated onto it. Once the replication is completed, the new unit
is reset and rejoins the stack automatically.
—End—
If the base unit is being replaced, remember that the stack elected a
temporary base unit. The new unit cannot automatically resume operation
as the base unit even with the Unit Select switch set to Base. To restore the
stack to its original running state with the new unit set to Base using the
Unit Select switch, the switch stack must be reset.
Auto Unit Replacement
The Auto Unit Replacement (AUR) feature enables users to replace a unit
from a stack while retaining the configuration of the unit. This feature
requires the stack power to be on during the unit replacement.
The main feature of the AUR is the ability to retain the configuration (CFG)
image of a unit in a stack during a unit replacement. The retained CFG
image from the old unit is restored to the new unit. Because retained CFG
images are kept in the DRAM of the stack, the stack power must be kept on
during the procedure.
ATTENTION
In order for AUR to function properly, the new unit and the existing units in the
stack must all be running the same version of software (Release 4.1 software
or later).
Nortel Ethernet Routing Switch 2500 Series
Overview — System Configuration
NN47215-500 (323162-B) 02.02 Standard
4.1 19 November 2007
Copyright © 2007, Nortel Networks
.