CHAPTER 27
Replacing Switch Fabric Components
•
Upgrading an MX240 SCB on page 347
•
Replacing an MX240 SCB on page 355
Upgrading an MX240 SCB
1.
Preparing for the Upgrade on page 347
2.
Upgrading the SCB in the Backup Routing Engine on page 349
3.
Upgrading the SCB in the Master Routing Engine on page 351
4.
Completing the SCB Upgrade on page 353
Preparing for the Upgrade
NOTE: Do not make other changes to the CLI during the entire upgrade
process. You can ensure that you will not make such changes by opening a
telnet sessionto the masterRE CLIoperational modeand issuingthe configure
exclusive command. This command locks the configuration procedure.
TIP: To prevent traffic loss during the upgrade process, we recommend that
you operate the line cards at 50% line rate. This 50% limit must be
maintained per PFE on each line card.
To prepare the MX240 router for the Enhanced MX Switch Control Board (MX SCBE)
upgrade:
347Copyright © 2017, Juniper Networks, Inc.
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