Standby Supervisor Module Boot Variable Version; Standby Supervisor Module Bootflash Memory; Standby Supervisor Module Boot Alert; Verifying The Status Of A Module - Cisco MDS 9000 Series Configuration Manual

Managing Modules

Standby Supervisor Module Boot Variable Version

If the standby supervisor module boot variable images are not the same version as those running on the active
supervisor module, the software forces the standby supervisor module to run the same version as the active
supervisor module.
If you specifically set the boot variables of the standby supervisor module to a different version and reboot
the standby supervisor module, the standby supervisor module will only load the specified boot variable if
the same version is also running on the active supervisor module. At this point, the standby supervisor module
is not running the images set in the boot variables.

Standby Supervisor Module Bootflash Memory

When updating software images on the standby supervisor module, verify that there is enough space available
for the image using the dir bootflash://sup-standby/ command. It is a good practice to remove older versions
of Cisco MDS NX-OS images and kickstart images.

Standby Supervisor Module Boot Alert

If a standby supervisor module fails to boot, the active supervisor module detects that condition and generates
a Call Home event and a system message and reboots the standby supervisor module approximately 3 to 6
minutes after the standby supervisor module moves to the loader> prompt.
The following system message is issued:
%DAEMON-2-SYSTEM_MSG:Standby supervisor failed to boot up.
This error message is also generated if one of the following situations apply:
• You remain at the loader> prompt for an extended period of time.
• You have not set the boot variables appropriately.

Verifying the Status of a Module

Before you begin configuring the switch, you need to ensure that the modules in the chassis are functioning
as designed. To verify the status of a module at any time, issue the show module command. The interfaces
in each module are ready to be configured when the ok status is displayed in the show module command
output. A sample screenshot output of the show module command follows:
switch# show module
Mod
---
2
4
5
6
8
9
Mod
---
OL-29291-02
Ports Module-Type
----- ------------------------------- ------------------ ------------
8 IP Storage Services Module
0 Caching Services Module
0 Supervisor/Fabric-1
0 Supervisor/Fabric-1
0 Caching Services Module
32 1/2 Gbps FC Module
Sw Hw World-Wide-Name(s) (WWN)
----------- ------ --------------------------------------------------
Standby Supervisor Module Boot Variable Version
Model
DS-X9308-SMIP
DS-X9530-SF1-K9
DS-X9530-SF1-K9
DS-X9560-SMAP
DS-X9032
Cisco MDS 9000 Family NX-OS Fundamentals Configuration Guide
Status
ok
ok
active *
ha-standby
ok
ok
163