Battery Backup Unit (BBU)

Battery Backup Unit Overview

The integrated modular battery backup unit (BBU) is a smart charging and monitoring system. When the system AC power is turned off on the IR8100, the installed BBU supplies power to the router. The BBU also allows graceful shutdown of events on the router based on the configured voltage level thresholds. IR8100 supports up to three BBU units installed on the system.

The BBU Product ID (PID) for the IR8100 is CGR-BATT-4AH.

Configuring BBU Mode

The BBU automatically begins to supply power to the router when it detects that power is not being received from the AC power supply. You may want to disable and enable the BBU for the following reasons:

To inhibit the BBU discharge during storage, shipping or transportation in order to preserve battery life.
To replace the battery in an installed and operating router.

Note

When the BBU is disabled by the request platform hardware battery disable command, the router will shut down if not powered by AC power. The BBU still can be charged when disabled.

Enabling BBU

To enable the BBU in the router:

Procedure

Step 1

Enter the request platform hardware battery enable command:

Example:

Router# request platform hardware battery enable

Step 2

Confirm the action when prompted:

Example:

Proceed with enabling battery?[confirm]
Battery enabled.
 
Router#
Aug 16 22:26:01.473: %BBU-5-CLI_OK: R0/0: bbu: Command Battery enabled

Step 3

To check the BBU status, enter the show platform hardware battery unit command:

Example:

Router#show platform hardware battery unit
Battery pack state: Operational

Battery unit                 0           1           2
----------------------------+-----------+-----------+-----------
Status ...................          Idle        Idle        Full
Battery Mode .............       enabled     enabled     enabled
Charge level .............           90%         91%         96%

Capacity Remaining   (mAh)          5235        5225        5545
Full Charge Capacity (mAh)          5739        5739        5739

Voltage ............. (mV)         11736       11714       11869
Current ............. (mA)             0           0           0

Temperature ......... ('C)            30          31          31

Firmware version .........          1224        1224        1224

Disabling BBU

To disable the BBU in the router:

Procedure

Step 1

Enter the request platform hardware battery disable command:

Example:

Router# request platform hardware battery disable

Step 2

Confirm the action when prompted:

Example:

Router will shut down if not powered by AC Power. Proceed with disabling battery?[confirm]
Battery disabled.
 
Router#
Aug 16 22:26:16.647: %BBU-5-CLI_OK: R0/0: bbu: Command Battery disabled

Step 3

To check the BBU status, enter the show platform hardware battery unit command:

Example:

Router# show platform hardware battery unit
Battery pack state: Operational

Battery unit                 0           1           2
----------------------------+-----------+-----------+-----------
Status ...................          Idle        Idle        Full
Battery Mode .............      disabled    disabled    disabled
Charge level .............           91%         91%         96%

Capacity Remaining   (mAh)          5236        5219        5534
Full Charge Capacity (mAh)          5739        5739        5739

Voltage ............. (mV)         11732       11714       11869
Current ............. (mA)             0           0           0

Temperature ......... ('C)            30          31          31

Firmware version .........          1224        1224        1224

Reset BBU

To reset the BBU in the router:

Procedure

Step 1	Use the request platform hardware battery reset enable command to disconnect the communications with the battery. Example: `Router#request platform hardware battery reset enable`
Step 2	Confirm the action when prompted: Example: `Proceed with enabling reset?[confirm] Battery reset enabled.`
Step 3	Verify the BBU status, with the show platform hardware battery unit command: Example: `Router#show platform hardware battery unit Battery is not ready Battery pack state: Not available`
Step 4	Use the request platform hardware battery reset disable command to reconnect communications with the battery: Example: `Router#request platform hardware battery reset disable`
Step 5	Confirm the action when prompted: Example: `Proceed with disabling reset?[confirm] Battery reset disabled.`
Step 6	Verify the BBU status, with the show platform hardware battery unit command: Example: `Router#show platform hardware battery unit Battery pack state: Operational Battery unit 0 1 ----------------------------+-----------+----------- Status ................... Full Full Battery Mode ............. enabled enabled Charge level ............. 87% 100% Capacity Remaining (mAh) 5907 6875 Full Charge Capacity (mAh) 6821 6944 Voltage ............. (mV) 11996 12244 Current ............. (mA) 0 0 Temperature ......... ('C) 30 31 Firmware version ......... 6273 6273`

Transportation Mode

When the router has the BBU transportation mode set, inhibit discharge is enabled when AC is ON and inhibit discharge is disabled when AC is OFF. So, effectively the battery can be charged, but does not discharge. Transportation mode setting is persistent on system reload.

To enable the BBU to transportation mode in the router:

Procedure

Step 1	Use the request platform hardware battery transportation-mode enable command to enable the transportation-mode: Example: `Router# request platform hardware battery transportation-mode enable`
Step 2	Confirm the action when prompted: Example: `Proceed with enabling transportation-mode?[confirm] Battery transportation-mode enabled.`
Step 3	Verify the BBU status, with the show platform hardware battery unit command: Example: `Router#show platform hardware battery unit Battery pack state: Operational (Transportation mode) Battery unit 0 1 ----------------------------+-----------+----------- Status ................... Full Full Battery Mode ............. enabled enabled Charge level ............. 87% 100% Capacity Remaining (mAh) 5907 6875 Full Charge Capacity (mAh) 6821 6944 Voltage ............. (mV) 11994 12245 Current ............. (mA) 0 0 Temperature ......... ('C) 30 31 Firmware version ......... 6273 6273`
Step 4	Use the request platform hardware battery transportation-mode disable command to disable the transportation-mode. Example: `Router# request platform hardware battery transportation-mode disable`
Step 5	Confirm the action when prompted: Example: `Proceed with disabling transportation-mode?[confirm] Battery transportation mode disabled.`

Upgrade BBU

We recommend that you keep the software up-to-date to ensure that the router works with the latest features and bug fixes.

To upgrade the BBU in the router:

Before you begin

Ensure your device is running IOS-XE 17.9.1 or later before proceeding with the upgrade.

Procedure

Step 1	Create a new directory bbu_fw . You must spell bbu_fw exactly. Example: `Router#mkdir bootflash:/bbu_fw Create directory filename [bbu_fw]? Created dir bootflash:/bbu_fw`
Step 2	Copy the firmware file (BMZ_06273.bin.SPA) to the bbu_fw directory using SCP or another file transfer method. Example: `Router#dir bootflash:/bbu_fw Directory of bootflash:/bbu_fw/ 259127 -rw- 27624 Oct 7 2024 20:23:23 +00:00 BMZ_06273.bin.SPA 7228108800 bytes total (5388279808 bytes free)` An image stored in a local file will be used to upgrade the BBU firmware through the cli. Prior to installation, the firmware image will be signed and verified. BBU firmware images and IR1840 images will be posted to Cisco.com. For more information, contact Cisco Support.
Step 3	Verify AC Power Supply is on and the firmware version is the old version (8302). Example: `Router#show platform hardware battery short AC power supply ......... ON Battery present ......... YES Battery ready ........... YES Transportation mode ..... NO Number of battery units . 1 Time to empty ........... 3:15 Unit# Charge Time to empty State Firmware Battery Mode ------+-------+--------------+------------+---------+-------------------- 0 37% 3:15 Idle 8302 enabled`
Step 4	Upgrade the firmware. Do not interrupt the process until it is complete. Example: `Router#request platform hardware battery firmware-update install bootflash:/bbu_fw/BMZ_06273.bin.SPA Proceed with bbu firmware upgrade?[confirm] Battery firmware upgrade starting` Example logs: Oct 7 20:35:47.039: %BBU-5-CLI_OK: R0/0: bbu: Command Battery firmware upgrade starting Oct 7 20:35:47.477: %BBU-7-FSM_TRANSITION: R0/0: bbu: FSM transition (3, 2) -> 2 Oct 7 20:35:48.478: %BBU-4-FW_UPGRADE_STARTED: R0/0: bbu: Firmware upgrade to version 6273 started Oct 7 20:35:59.637: %BBU-3-COMM_ERR: R0/0: bbu: Battery communication error: select timed out Oct 7 20:36:07.598: %BBU-5-FW_UPGRADE_FINISHED: R0/0: bbu: Firmware upgrade finished successfully Oct 7 20:36:07.599: %BBU-7-FSM_TRANSITION: R0/0: bbu: FSM transition (2, 2) -> 0 Oct 7 20:36:14.807: %BBU-5-BBU_EVT_LOG: R0/0: bbu: Battery Event Log - BBU Event Data is written to log file:success Oct 7 20:36:14.811: %BBU-7-FSM_TRANSITION: R0/0: bbu: FSM transition (0, 2) -> 3
Step 5	Verify that the firmware upgrade is successful. `Router#show platform hardware battery short AC power supply ......... ON Battery present ......... YES Battery ready ........... YES Transportation mode ..... NO Number of battery units . 1 Time to empty ........... 2:39 Unit# Charge Time to empty State Firmware Battery Mode ------+-------+--------------+------------+---------+-------------------- 0 37% 2:39 Charging 6273 enabled`

Cisco Catalyst IR8140 Heavy Duty Series Router Software Configuration Guide

Bias-Free Language

Results

Chapter: Battery Backup Unit (BBU)

Battery Backup Unit (BBU)

Battery Backup Unit Overview

Configuring BBU Mode

Enabling BBU

Procedure

Example:

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Disabling BBU

Procedure

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Reset BBU

Procedure

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Transportation Mode

Procedure

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Upgrade BBU

Before you begin

Procedure

Example:

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