Upgrading Memory For Supervisor 1 Modules - Cisco Nexus 7000 Hardware Installation And Reference Manual

Chapter 10 Installing or Replacing Components
switch# show mod
Mod
---
1
2
switch# show system redundancy ha status
VDC No This supervisor Other supervisor
------ --------------- ----------------
vdc 1 Active with HA standby HA standby
vdc 2 Active with HA standby HA standby
vdc 3 Active with HA standby HA standby
vdc 4 Active with HA standby HA standby

Upgrading Memory for Supervisor 1 Modules

The Cisco Nexus 7000 Series Supervisor 1 modules use either 4 GB or 8 GB of memory. For switches
that have two supervisor modules, each module must have the same amount of memory so that it can
provide redundant services for the other. In order to use 8 GB of memory, a switch must be running Cisco
NX-OS Release 5.1 or later release. If the switch is running an earlier release of Cisco NX-OS, the
supervisor modules must have only 4 GB of memory installed.
The Cisco NX-OS software may require 8 GB of memory, depending on the software version you use
Note
and the software features that you enable. If your switch has Supervisor 1 modules with only 4 GB of
memory, then you might need to upgrade the modules to 8 GB of memory by using the 8 GB supervisor
upgrade kit (N7K-SUP1-8GBUPG=). This upgrade is not needed for switches that have at least 8 GB of
memory (which includes Supervisor 1 modules with 8 GB and all Supervisor 2 and Supervisor 2E
modules).
To determine the amount of memory installed in the active supervisor, use the show system resources
command as shown in
supervisor module, use the system switchover command to make that module active and then use the
show system resources command. This example shows the output for the show system resources
command, which shows 4115768K (4 GB) of memory usage.
Example 10-1 Determining the Amount of Memory used by the active supervisor module.
switch# show system resources
Load average:
Processes
CPU states
Memory usage:
switch#
The following guidelines can help you determine whether or not to upgrade an existing Supervisor 1
module:
•
•
OL-23069-07
Ports Module-Type
----- -----------------------
0 Supervisor module-2
0 Supervisor module-2
Example
1 minute: 0.22
: 860 total, 3 running
: 0.0% user,
4115768K total,
When the switch memory usage exceeds 3 GB (75 percent of total memory), we recommend that
you upgrade the memory to 8 GB.
If you create more than one VDC with XL mode enabled, or if you have more than two VDCs, 8 GB
is required.
Model
--------------
N7K-SUP2E
N7K-SUP2E
10-1. To determine the amount of memory used by the standby
5 minutes: 0.25
6.5% kernel, 93.5% idle
2747512K used,
Cisco Nexus 7000 Series Hardware Installation and Reference Guide
Replacing a Supervisor Module
Status
---------
active
ha-standby
15 minutes:0.15
1368256K free
10-29