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Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
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Chapter 12 Configuring LRE
Upgrading LRE Switch Firmware
Performing an LRE Upgrade
You can upgrade either on a system-wide basis (in other words, upgrading the software on all connected
CPE devices and local LRE chipsets) or on individual CPE device or LRE controllers. By default, a
system-wide upgrade applies the most recent versions of LRE binaries that are most compatible with
each upgradable hardware module. The system-wide upgrade method is the one that you use in almost
all situations.
When executing upgrades, you can elect to upgrade a single CPE device or local controller by using the
hw-module slot module-slot-number upgrade lre [force] [local ctrlr-unit-number | remote
interface-id] privileged EXEC command. If no local or remote option is given, a system-wide upgrade
is performed.
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 family global configuration 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 very-high-data-rate digital subscriber line (VDSL) link:
You can use the upgrade controller configuration command 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.
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 {LRE binary [remote lre-interface] |
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.
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