Cisco Cisco IOS Software Release 12.0(11)S

To globally disable ifIndex persistence after enabling it, use the following command in global 
configuration mode:

After issuing ifIndex persistence commands, the configuration must be saved using the 
copy running-config startup-config EXEC mode command to ensure consistent ifIndex 
values.

To enable ifIndex persistence only on a specific interface, use the following commands, starting in 
global configuration mode:

To disable ifIndex persistence only on a specific interface, use the following commands, starting in 
global configuration mode:

Router(config)# snmp-server ifindex persist

Globally enables ifIndex values which will remain 
constant across reboots.

Router(config)# no snmp-server ifindex persist

Disables global ifIndex persistence.

Router(config)# interface type slot/port

Enters interface configuration mode for the 
specified interface. Note that the syntax of the 
interface command will vary depending on the 
platform you are using.

Router(config-if)# snmp ifindex persist

Enables an ifIndex value which is constant across 
reboots on the specified interface.

Router(config-if)# exit

Exits interface configuration mode.

Router(config)# interface type slot/port

Enters interface configuration mode for the 
specified interface. Note that the syntax of the 
interface command will vary depending on the 
platform you are using.

Router(config-if)# no snmp ifindex persist

Disables an ifIndex value which is constant across 
reboots on the specified interface.

Router(config-if)# exit

Exits interface configuration mode.