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Cisco Performance Routing Engine (ESR-PRE2) Upgrade Installation
OL-24535-01
Description
Warning
Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Statement 1030
Caution
Always wear a grounding wrist strap to avoid ESD damage to the module.
Description
The Cisco Performance Routing Engine (ESR-PRE2) is a single-slot module that performs Layer 2 and
Layer 3 packet routing and forwarding using Parallel eXpress Forwarding (PXF).
Upgrading to a PRE2
This upgrade should be performed by a qualified engineer who is familiar with the Cisco router console
interface.
Upgrade Considerations
•
This is a service-impacting hardware upgrade. The router will not be available for user traffic during
the upgrade, and traffic cannot resume until the upgrade is complete.
•
PREs or PRE1s cannot operate with a PRE2 in the same chassis and should never be installed in a
chassis together.
•
PRE2 modules to be installed must have the helper image (eboot) stored in the onboard boot flash,
no configuration, and must be set to boot into ROMMON. Individual PRE2 modules ship in this
state.
•
The new PRE2 image must exist on the TFTP server.
Saving the Startup and Running Configuration Information
When the PRE or PRE1 is removed from the chassis, any local configuration is lost. You must save your
configuration information to the TFTP server or media card before removing the module.
If you plan to use the media card from your current PRE or PRE1, you can save your startup
configuration, running configuration, and the latest PRE2 image (from the TFTP server) to the media
card.
Saving to a Media Card
Step 1
Connect the console to the primary PRE or PRE1.
Step 2
Copy the startup configuration and running configuration to the existing removable media card.
Step 3
Download the full PRE2 image from the TFTP server to the media card.
Step 4
If you have a redundant PRE or PRE1, save this information on the redundant PRE or PRE1 media card.
