Juniper MX240 - Upgrading an MX240 SCB; Preparing for the Upgrade; Figure 158: Installing an SCB

Figure 158: Installing an SCB
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Upgrading an MX240 SCB
1.
Preparing for the Upgrade on page 359
2.
Upgrading the SCB in the Backup Routing Engine on page 361
3.
Upgrading the SCB in the Master Routing Engine on page 363
4.
Completing the SCB Upgrade on page 365
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.
359Copyright © 2017, Juniper Networks, Inc.
Chapter 27: Replacing Switch Fabric Components