Manually allocating the traditional stack MAC address

Beginning with FastIron release 08.0.20, when a stack is enabled, “hitless-failover enable” configuration is added, and a default stack MAC address is assigned if none is configured. The address assigned is the MAC address of the unit as shown in the output of the show stack command.

If necessary, you can manually configure your traditional stack to use a specific MAC address.

NOTE

The stack mac command may be useful for administration purposes; however, it should be used with caution to prevent duplication of MAC addresses.

ICX7750-26Q Router# configure terminal
ICX7750-26Q Router(config)# stack mac 0000.0000.0011
ICX7750-26Q Router(config)# show running-config
Current configuration:
!
ver 08.0.40b1T203
!
stack unit 1
  module 1 icx7750-20-qxg-port-management-module
  module 2 icx7750-qsfp-6port-qsfp-240g-module
  module 3 icx7750-6q-6port-qsfp-240g-module
  priority 255
  stack-port 1/2/1 1/2/4
stack unit 2
  module 1 icx7750-20-qxg-port-management-module
  module 2 icx7750-qsfp-6port-qsfp-240g-module
  module 3 icx7750-6q-6port-qsfp-240g-module
  priority 240
  stack-port 2/2/1 2/2/4
stack enable
stack mac 0000.0000.0011
!

To configure a stack MAC address manually, enter the following command in device configuration mode.

device# configure terminal
device(config)# stack mac 0000.0000.0011

The MAC address is a hexadecimal number in the format xxxx.xxxx.xxxx.

NOTE

Enter the no form of this command to revert to the use of the active controllers' MAC address.

The following example shows the stack MAC address being configured manually as confirmed in the show running-config command output.

ICX7750-26Q Router# configure terminal
ICX7750-26Q Router(config)# stack mac 0000.0000.0011
ICX7750-26Q Router(config)# show running-config
Current configuration:
!
ver 08.0.40b1T203
!
stack unit 1
  module 1 icx7750-20-qxg-port-management-module
  module 2 icx7750-qsfp-6port-qsfp-240g-module
  module 3 icx7750-6q-6port-qsfp-240g-module
  priority 255
  stack-port 1/2/1 1/2/4
stack unit 2
  module 1 icx7750-20-qxg-port-management-module
  module 2 icx7750-qsfp-6port-qsfp-240g-module
  module 3 icx7750-6q-6port-qsfp-240g-module
  priority 240
  stack-port 2/2/1 2/2/4
stack enable
stack mac 0000.0000.0011
!

To display the stack MAC address, enter the show chassis command.

ICX7450-48F Router# show chassis
The stack unit 1 chassis info: 

Power supply 1 (AC - Regular) present, status ok
        Model Number:   23-0000144-02
        Serial Number:  0L8      
        Firmware Ver:    A
Power supply 1 Fan Air Flow Direction:  Front to Back
Power supply 2 not present

Fan 1 ok, speed (auto): [[1]]<->2
Fan 2 ok, speed (auto): [[1]]<->2

Fan controlled temperature: 62.5 deg-C

Fan speed switching temperature thresholds:
                Speed 1: NM<----->63       deg-C
                Speed 2:       53<-----> 80 deg-C (shutdown)

Fan 1 Air Flow Direction:  Front to Back 
Fan 2 Air Flow Direction:  Front to Back 
Slot 1 Current Temperature: 44.5 deg-C (Sensor 1), 62.5 deg-C (Sensor 2), 52.0 deg-C (Sensor 3), 41.5 deg-C (Sensor 4), 54.5 deg-C (Sensor 5)
Slot 2 Current Temperature: 41.0 deg-C (Sensor 1)
Slot 3 Current Temperature: 45.0 deg-C (Sensor 1)
Slot 4 Current Temperature: 45.0 deg-C (Sensor 1)                 
        Warning level.......: 70.0 deg-C
        Shutdown level......: 80.0 deg-C
Boot Prom MAC : cc4e.246d.1378
Management MAC: cc4e.246d.1378

NOTE

For field descriptions of the show chassis command, refer to Displaying traditional stack chassis information.

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Manually allocating the traditional stack MAC address