Upgrade Preserve - Cisco Catalyst 2950 Command Reference Manual

upgrade preserve

upgrade preserve
Use the upgrade preserve controller configuration command to prevent an upgrade from taking place
on a controller in a Long-Reach Ethernet (LRE) switch and on all the devices that remotely connect to
it. Use the no form of the command to allow upgrades on the devices.
This command is available only on a Catalyst 2950 LRE switch.
Syntax Description
This command has no arguments or keywords.
Command Modes Controller configuration
Command History Release
12.1(11)YJ
Usage Guidelines
When you use the upgrade preserve controller configuration command, an LRE switch does not
upgrade a controller and all the devices connected to it during an LRE upgrade. This command does not
affect other controllers in the switch and their connected devices.
Examples
This example shows how to prevent the controller 0, and the CPE devices attached to it, from being
upgraded:
Switch# configure terminal
Switch(config)# controller longreachethernet 0
Switch(config-controller)# upgrade preserve
Related Commands Command
controller longreachethernet
upgrade binary
Catalyst 2950 and Catalyst 2955 Switch Command Reference
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upgrade preserve
no upgrade preserve
Modification
This command was introduced.
Chapter 2
Description
Enter controller configuration mode.
Configures upgrades on either end of an LRE link.
Catalyst 2950 and 2955 Cisco IOS Commands
OL-10102-01