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Catalyst 2950 Desktop Switch Software Configuration Guide
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Chapter 10 Configuring LRE
Upgrading LRE Switch Firmware
Global Configuration of LRE Upgrades
Beginning in privileged EXEC mode, follow these steps to perform a system-wide upgrade to configure
the LRE binary to apply to a target device and upgradable hardware element combination:
Note The lre upgrade default mode command essentially overrides the system default selection of an LRE
binary for a specified family of CPE devices (target devices).
Controller Configuration of LRE Upgrades
Beginning in privileged EXEC mode, follow these steps to explicitly direct the LRE binaries to be
applied to either the local controller or a specific VDSL link:
You can use the upgrade configuration command in the controller submode to override the system
default selection of an LRE binary that will be applied on either end of a particular LRE link. Controller
configurations take precedence over global upgrade configurations.
The preserve keyword causes the LRE upgrade mechanism to not upgrade the local controller on which
preserve is configured or any of the CPE devices connected to that controller. If you want to preserve
(in other words, not upgrade) some of the CPE devices connected to a particular controller but allow
upgrades to others, you can enter controller upgrade configuration commands for the links you want to
upgrade.
The no form of the command removes the command for applying a particular LRE binary. To resume
default upgrade behavior for a given controller, do not configure the custom upgrade commands on that
controller.
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
lre binary default target_device LRE_binary Enter the device to which the LRE binary should be applied; and
the LRE binary to be applied.
Step 3
end Return to privileged EXEC mode.
Step 4
show lre upgrade version Verify the change.
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
controller lre chipset_number Enter the particular LRE local chipset on the switch to be applied.
Step 3
upgrade <[remote lo x/y] LRE_Binary |
preserve>
Enter the LRE binary to be applied, or set preserve, which
prevents the upgrade of any CPE devices connected to a
controller or local chipset.
Step 4
end Return to privileged EXEC mode.
Step 5
show lre upgrade version Verify the change.