CISCO-STACK-MIB :: sysConfigRegister

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsCISCO-STACK-MIBsysConfigRegister

sysConfigRegister

Module: CISCO-STACK-MIB

OID (symbolic): CISCO-STACK-MIB::sysConfigRegister

OID (numeric): 1.3.6.1.4.1.9.5.1.1.36

Node type: OBJECT-TYPE

Type: OCTET STRING

Access: read-write

Description: The value of configuration register that will be used by the supervisor module when the system is restarted. This MIB object is only supported in systems with supervisor modules having ROMMON support.

The lowest four bits of the configuration register (bits 3,2,1, and 0) form the boot field and the boot field determines whether the system boots from as the following: 0000 -- stay in ROM monitor 0001 -- boot from the first bootable system images on the bootflash 0010 to 1111 -- boot from the first bootable system images specified in the sysBootVariable

The bit 5(0x0020) indicates whether the configuration file specified in sysStartupConfigSourceFile will beused recurringly or not whenever the system resets. If this bit is not set, the configuration file(s) specified in sysStartupConfigSourceFile will only be used once and the value of sysStartupConfigSourceFile will be reset to empty string automatically during the next system reset.

If the bit 6(0x0040) is set, the system will start with default configuration.

The bits 11,12 (0x0800, 0x1000) are used to specify the console line speed in ROM monitor mode as the following: 00 -- 9600 01 -- 1200 10 -- 4800 11 -- 2400

The unspecified bits are not used.

What is sysConfigRegister?

This read-write object sets the configuration register value that the supervisor module will use the next time the system restarts, controlling boot behavior on systems with ROMMON support.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.9.5.1.1.36
snmpwalk -v2c -c public <target> CISCO-STACK-MIB::sysConfigRegister

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.9.5.1.1.36.1
snmpget -v2c -c public <target> CISCO-STACK-MIB::sysConfigRegister.1

Set instance 1 (SNMPv2c):

snmpset -v2c -c private <target> 1.3.6.1.4.1.9.5.1.1.36.1 s <value>

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OID Breakdown

Upper-level ancestors (8 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.6dodAirPair-MIB
1.3.6.1internetAirPair-MIB
1.3.6.1.4privateAirPair-MIB
1.3.6.1.4.1enterprisesAirPair-MIB
1.3.6.1.4.1.9ciscoCAT2600-MIB
1.3.6.1.4.1.9.5workgroupCISCO-ES-STACK-MIB
Numeric OIDNameModule
1.3.6.1.4.1.9.5.1ciscoStackMIBCISCO-STACK-MIB
1.3.6.1.4.1.9.5.1.1systemGrpCISCO-STACK-MIB
1.3.6.1.4.1.9.5.1.1.36sysConfigRegisterCISCO-STACK-MIB