Third TCU (TCU2) card in a system is showing as Out of Service

Asset ID:	1-71-2017490.1
Update Date:	2017-05-09
Keywords:

Solution Type Technical Instruction Sure

Solution 2017490.1 : Third TCU (TCU2) card in a system is showing as Out of Service

Applies to:

Net-Net 9200 - Version S-D7.1.0 to S-D7.2.3 [Release S-D7.0]
Information in this document applies to any platform.

Goal

Enable 2 + 1 redundancy for the TCUs in a 9200

Solution

# show status

Slot   Type      State           Role          Temperature CPU       Memory
4    TCU0      CARD RUNNING    STANDBY       Normal      Normal    Normal
5    TCU1      CARD RUNNING    ACTIVE        Normal      Normal    Normal
6    TCU2      CARD RUNNING    OOS           Normal      Normal    Normal <------------- show Out Of Service

We should check if tcu-double-active is set as disable, if it is, it will show slot6 as OOS, completely unavailable.

(configure)# system
(system)# system-config
(system-config)# show

tcu-double-active                 disabled   <--- set this as enabled

To set slot6 as standby, we should set tcu-double-active as enable:

(configure)# system
(system)# system-config
(system-config)# tcu-double-active enabled
(system-config)# done
(system-config)# exit
(configure)# exit
# save config
# activate
# reboot

Not real time configurable (RTC), so a reboot is required.

Slot6 will be redundancy for slot4 or slot5 as below:

# show status

Slot   Type      State           Role          Temperature CPU       Memory
4    TCU0      CARD RUNNING    ACTIVE        Normal      Normal    Normal
5    TCU1      CARD RUNNING    ACTIVE        Normal      Normal    Normal
6    TCU2      CARD RUNNING    STANDBY       Normal      Normal    Normal <------- Now you can take the day off and celebrate :D

If after the reboot it is still in OOS state, we should replace the TCU.

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