Overview Of Supervisor Modules - Cisco Nexus 9504 Hardware Installation Manual

Managing the Switch

Overview of Supervisor Modules

The switch has one or two supervisor modules of the following types:
• Supervisor A (N9K-SUP-A) modules with four cores, 4 executable threads, 16 GB of memory, and 64
• Supervisor A+ (N9K-SUP-A+) with four cores, 8 executable threads, 1.8 GHz, 16 GB of memory, and
• Supervisor B (N9K-SUP-B) with six cores, 12 executable threads, 2.2 GHz, 24 GB of memory, and 256
• Supervisor B+ (N9K-SUP-B+) with six cores, 12 executable threads, 1.9 GHz, 32 GB of memory, and
When a switch has two supervisors, one supervisor is automatically active while the other is in standby mode.
If the active supervisor goes down or is disconnected for replacement, the standby supervisor automatically
becomes active. If you replace one of two installed supervisor modules with another module, you can do so
without interrupting operations. The supervisor that you are not replacing becomes the active supervisor and
retains the kickstart configuration while you replace the other supervisor. If the switch has just one supervisor,
you can install the new supervisor in the open supervisor slot during operations. You can make that supervisor
active after the installation.
Note
Supervisor modules are automatically powered up and started with the switch.
To understand the terms that are used for the supervisors, see the following table.
Module Terms
module-27 and module-28
GB of SSD)
64 GB of SSD
GB of SSD
256 GB of SSD
If there are two supervisors that are installed in the chassis, both must be the same type as shown in the
following table:
Table 2:
Active Supervisor
Supervisor A
Supervisor B
Supervisor A+
Supervisor B+
A Cisco Nexus 9504 chassis with -R line cards requires supervisor B or B+ modules.
Usage
Fixed
Standby Supervisor
Supervisor A
Supervisor B
Supervisor A+
Supervisor B+
Description
• Module-27 refers to the supervisor module in chassis
slot 27 (labeled as SUP 1 on the chassis).
• Module-28 refers to the supervisor module in chassis
slot 28 (labeled as SUP 2 on the chassis).
Cisco Nexus 9504 NX-OS Mode Switch Hardware Installation Guide

Overview of Supervisor Modules

Is Combination Allowed?
Yes
Yes
Yes
Yes
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