Appendix C: Field-Replaceable Units
7750 SR-a4 and SR-a8 Installation Guide 205
Changing the MDA-a Configuration
If you replace an MDA-a with a different type of MDA-a, you must change the configuration
to reflect the new MDA-a type before the installation. All services and each active port must
be unconfigured and shutdown to remove an MDA-a. Refer to the 7750 SR-OS Interface
Configuration Guide for information about configuring MDA-a cards and ports.
Use the following commands in the config context to shut down ports and remove the
MDA-a from the configuration:
Note:
• MDA-a cards cannot be provisioned if the CPM-a is not preprovisioned.
• Ports cannot be provisioned if the MDA-a is not preprovisioned.
• Services cannot be provisioned if ports are not provisioned.
Command Syntax Example
Shut down ports:
Step 1. port port-id port 1/1 (etc.)
Step 2. shutdown shutdown
Note: The port> shutdown command must be entered for all enabled ports on the MDA.
Step 3. exit exit
Shut down the card and MDA slot:
Step 4. card slot-number card 1
Step 5. mda mda-slot mda 1
Step 6. shutdown shutdown
Step 7. exit exit
Remove the MDA from the configuration:
Step 8. no mda mda-slot no mda 1
Configure the MDA slot and type:
Step 9. mda slot-number mda 1
Step 10. mda mda-type mda maxp1-100gb-cfp
Step 11. no shutdown no shutdown
Step 12. exit exit
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