- Unpacking the Router
- Site Preparation and Installation Safety (Read before Installing)
- Hardware Features - Description and Specifications
- Mounting and Grounding the Router
- Opening and Closing the Router Chassis
- Making Network, Power, and Other Connections
- Powering Off the Router
- Unmounting the Router
- Installing Connected Grid Modules
- Antennas
- About the SD Flash Memory Module
- Installing Battery Backup Units (BBUs)
- Installing External, Non-Cisco Radio Modules
- LED Locations and States
- Appendix - Starting a Router Terminal or Console Session
- Appendix - Cable and Connector Specifications
Installing Battery Backup Units (BBUs)
The Cisco 1240 Connected Grid Router(CGR 1240 or router) supports up to three battery backup units (BBUs), which provide power to the router if the router AC power supply fails or is not available. This section describes the BBU features and installation procedures.
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BBU Lifecycle Handling and Storage Guidelines
■Installing a BBU in the Router
■Disabling and Enabling the BBU in the Router
Battery Backup Units
This section contains information about:
Battery Backup Operations
The battery backup unit (BBU) provides the router with an emergency power source if the AC power source is unavailable.
The router supports up to three BBU units installed at one time. The units are mounted on the router door interior (Figure 87).
The total amount of time that the installed BBUs can supply power to the router depends on the configuration of the FAR and how many BBUs are installed in the router.
The BBU can be installed in the router while the router is powered on and operating normally.
The BBU internal components include battery cells, a primary protection circuit, a fuel gauge, and a charger. For detailed, illustrated descriptions of the BBU, see BBU Components.
Figure 87 Battery Backup Units Mounted on Router Door
Battery Backup Units Mounted on Router Door
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Battery backup units. The router supports up to three BBUs. Battery Backup Units Mounted on Router Door shows the router with three BBUs, highlighted in red. |
BBU Status
The BBU is automatically enabled and begins supplying power to the router when the router detects that power is not being received from the AC power supply. The BBU continues to supply power to the router until at least one of the following conditions is met:
■All BBUs are completely discharged
■AC power to the router is enabled
■The BBU is disabled with software commands (see Related Commands)
Note: For information on technical details about the router power path selection and the conditions that trigger the BBU to begin operating, see BBU Technical Specifications.
Battery Backup Mode
This section describes the impact on the router configuration and operating capabilities when the router switches from AC power to BBU power.
Router Configuration
The router software configuration is not impacted when the router switches from AC power to BBU power.
Ethernet Switch and Connected Grid Module Operation
By default, the Ethernet switch module (referred to as module 2 in the system software) and any modules installed in slots 3, 4, 5, and 6 continue to operate normally when the router switches from AC power to BBU power.
On routers using the Cisco CG-OS operating system, you can use the poweroff module number backup-battery command to configure the modules (including the Ethernet switch) to shut down when the router switches to BBU power. See poweroff module number backup-battery.
You can configure the router to automatically power off specific modules when the router switches to BBU power.
Note: You can only use the poweroff module number backup-battery command to configure modules to shut down when the router switches to BBU power, on routers using the Cisco CG-OS operating system. This CLI action cannot be performed on routers using the Cisco IOS operating system.
Router Interface Operation
To conserve power, the router will power off some interfaces when AC power is not available and the router is being powered by the BBU. The following interfaces and router components switch to power-off mode when the BBU is supplying power to the router:
When these interfaces are in power-off mode, you cannot configure them with the system software; however, you can display information about each interface using the following show commands:
BBU Firmware Upgrade
Note: You can only use the backup-battery firmware upgrade command, to upgrade the BBU firmware and to show information about the BBU firmware upgrade, on routers using the Cisco CG-OS operating system. This command cannot be used on routers using the Cisco IOS operating system.
To upgrade the BBU firmware and to show information about the BBU firmware upgrade, issue the following command:
The firmware upgrade is executed in background and a syslog message is displayed when the BBU firmware upgrade has completed. During the firmware upgrade, you can issue the show environment power command to view the state of the BBU firmware upgrade.
BBU Capacity
The router supports up to three BBUs at one time. You should install as many BBUs as needed, up to three, to meet your emergency power requirements.
If all installed batteries fully discharge while providing backup power to the router, the router will send a dying gasp message and then shut down.
BBU Lifecycle Handling and Storage Guidelines
This section contains information about the BBU status and condition during the BBU lifecycle and how to approach and manage it. These topics are discussed:
■BBU Storage Related Definitions
■BBU Shipping and Receiving Guidelines
■BBU Storage and Handling Guidelines
BBU Storage Related Definitions
Shelf Life
Shelf life is the length of time before a BBU needs to be recharged in order to avoid BBU over-discharge.
State of Charge
State of charge (SOC) is the amount of charge on a battery and it is expressed as a percentage value. For example, an SOC of 100% represents a battery that is fully charged, and an SOC of 0% represents a battery that is fully discharged or has no charge.
BBU Shipping and Receiving Guidelines
The BBU shipping and receiving guidelines define the BBU SOC status and how it can be managed at this stage of the BBU life cycle:
■Cisco ships BBUs with a minimum of 60% SOC from the Cisco contract manufacturer (CM).
■Each BBU should have a minimum SOC of 50% upon receipt from the Cisco CM.
–A minimum SOC of 50% allows for approximately 10 weeks between shipment from Cisco’s CM and a customer checking the SOC.
–SOC decreases approximately 1% per week.
–BBU SOC status can be checked using the command line interface (CLI) or CG-NMS.
–BBUs with less than 50% SOC should be recharged by the system integrator or customer to >50% SOC.
BBU Storage and Handling Guidelines
The BBU storage and handling guidelines define the BBU shelf life status and how it can be managed at this stage of the BBU lifecycle:
■The shelf life of a BBU installed in a router with discharge disabled and BBU disabled, or for a spare BBU, is a minimum of 365 days.
■Prior to connection to an AC source, the BBU shelf life is a minimum of 21 days.
■When long term storage at a customer site is anticipated, Cisco requires that the BBUs be recharged prior to expiration of shelf life.
■When AC power is disconnected and the Cisco Connected Grid router is removed from service:
–The CGR switches to DC power supplied by the BBU(s) and remains powered for approximately 8 hours.
–After 8 hours the BBU(s) reaches low voltage disconnect, and the remaining shelf life is a minimum of 21 days.
–The BBU should be placed in "BBU disable mode" when the CGR is removed from service in order to extend BBU shelf life up to 365 + 21 days
–The remaining shelf life depends on the elapsed time between removal of AC power and the BBU placed in "BBU disable mode".
–Disabling a BBU at 0% SOC means a minimum remaining shelf life of 21 days, and disabling a BBU 100% SOC means a maximum remaining shelf life of 386 days.
Recharging a BBU
2. Connect the CGR to an AC power source.
3. Allow at least 8 hours of charge time per BBU, i.e. for CGRs with 3 BBUs each, allow 24 hours charge time per CGR.
Replacing a BBU
Note: When you replace a BBU in the CGR 1240, we highly recommend:
■Verifying all the replacement BBUs are the same version.
When a CGR 1240 operates with different BBU versions, it may result in misbehavior in the BBU functionality. This condition is seen in CGR 1240s installed with either Cisco IOS or Cisco CG-OS software.
1. Remove AC power from the CGR.
2. Disconnect the BBU Harness from the BBU.
BBU Disposal Guidelines
Instructions for disposal of BBUs
■For CGRs under warranty, follow the standard Cisco RMA procedures.
■If Cisco identifies a BBU or set of BBUs as a non-functional item that can be discarded without being returned for failure analysis, BBUs removed for replacement must be disposed of in accordance with local guidelines.
■US and Canadian customers should utilize www.call2recycle.org to properly recycle the lithium ion BBUs.
■For local recycling outside of the US and Canada, customers should contact the following Cisco email for guidance specific to customer’s country/region: environment@cisco.com
■For further local take-back and recycling information, customers can refer to: www.cisco-returns.com
Preparing to Install the BBU
Tools You Supply
You must provide a #1 Phillips screwdriver to install the BBU.
Safety Information for Installation
Safety Warnings
Read the safety warnings in Installation Safety and Site Preparation.
Warning: There is the danger of explosion if the battery is replaced incorrectly. Replace the battery only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the manufacturer's instructions. Statement 1015
Warning: Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement 1030
Note: When you replace a BBU in the CGR 1240, we highly recommend:
■Verifying all the replacement BBUs are the same version.
When a CGR 1240 operates with different BBU versions, it may result in misbehavior in the BBU functionality. This condition is seen in CGR 1240s installed with either Cisco IOS or Cisco CG-OS software.
Preventing Electrostatic Discharge Damage
The BBUs are sensitive to electrostatic discharge (ESD) damage which can occur when electronic cards or components are handled improperly, and can result in complete or intermittent failures.
To prevent ESD damage, follow these guidelines:
■Always use an ESD wrist or ankle strap and ensure that it makes good skin contact.
■Connect the equipment end of the strap to an unfinished chassis surface.
■Place the BBU on an antistatic surface or in a static shielding bag. If the BBU will be returned to the factory, immediately place it in a static shielding bag.
■Avoid contact between the battery and clothing. The wrist strap protects the battery from ESD voltages on the body only; ESD voltages on clothing can still cause damage.
■Do not remove the wrist strap until the installation is complete.
BBU Components
This section illustrates and describes the BBU components you should be familiar with when installing the BBU.
Note: For technical specifications of the components described in this section, see BBU Technical Specifications.
Battery-to-Battery Connectors
Figure 88 Front of Battery Backup Unit
Figure 89 Rear of Battery Backup Unit
Battery-to-Router Connector
The first BBU installed features a single battery-to-router connector at the base, which connects to the BBU cable inside the router (shown in Figure 92).
Figure 90 Battery-to-Router Connector
Locating Pin and Notch
When you connect a second or third battery to a battery already installed in the router, use the locating pin and notch to ensure correct battery position and align the battery connectors.
Figure 91 illustrates the pin and notch location on the BBU.
Figure 91 Locating Pin and Notch
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Installing a BBU in the Router
This section describes how to install a BBU in the router. A new BBU will be about 50% charged when you receive it.
Caution: When you install a BBU in the router, if there is no AC power being supplied to the router, the BBU will immediately begin to power the router when it is connected to the BBU harness cable.
To prevent the BBU charging the router prior to installation in the field, the BBU is disabled during shipment. To ensure the BBU can be charged and power the router when required, enable the BBU right after installation.
Note: When you replace a BBU in the CGR 1240, we highly recommend:
■Verifying all the replacement BBUs are the same version.
When a CGR 1240 operates with different BBU versions, it may result in misbehavior in the BBU functionality. This condition is seen in CGR 1240s installed with either Cisco IOS or Cisco CG-OS software.
Online Insertion and Removal
BBU Online Insertion and Removal (OIR) is not supported by the Cisco CG-OS or Cisco IOS operating systems.
For routers using the Cisco CG-OS operating system, the workaround is to execute the battery disable command at the CLI and then perform the insertion or removal. There is no workaround for Cisco IOS.
Installation Illustrations
The procedures in this section refer to the following illustrations:
■BBU components illustrated in BBU Components
■Router installation features shown in Figure 92
■BBU installation assembly shown in Figure 93
Installation Procedures
This section includes steps for the following procedures:
■Installing BBU 0 (Installing a single BBU)
■Installing BBU 1 or BBU 2 (Installing additional BBUs)
Figure 92 Router Features for BBU Installation
Figure 93 BBU Installation Assembly
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Captive screws (6 per BBU). Use 7-9 in-lbs torque when tightening. |
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Installing BBU 0
Note: When you replace a BBU in the CGR 1240, we highly recommend:
■Verifying all the replacement BBUs are the same version.
When a CGR 1240 operates with different BBU versions, it may result in misbehavior in the BBU functionality. This condition is seen in CGR 1240s installed with either Cisco IOS or Cisco CG-OS software.
Note: If you are installing a second or third BBU, follow the steps in Installing BBU 1 or BBU 2.
To install BBU 0 (the first BBU) in the router:
1. Power down the router completely.
For more information: http://www.cisco.com/en/US/docs/routers/connectedgrid/cgr1000/hardware/cgr1240/power.off.html
For more information: http://www.cisco.com/en/US/docs/routers/connectedgrid/cgr1000/hardware/cgr1240/chassis.html
3. Remove the BBU cable (from BBU 0, if present).
5. Connect the BBU cable to the newly installed BBU.
For more information: http://www.cisco.com/en/US/docs/routers/connectedgrid/cgr1000/hardware/cgr1240/chassis.html
7. Reconnect the router to AC power.
For more information: http://www.cisco.com/en/US/docs/routers/connectedgrid/cgr1000/hardware/cgr1240/cabling.html#wp1054345
Installing BBU 1 or BBU 2
Note: When you replace a BBU in the CGR 1240, we highly recommend:
■Verifying all the replacement BBUs are the same version.
When a CGR 1240 operates with different BBU versions, it may result in misbehavior in the BBU functionality. This condition is seen in CGR 1240s installed with either Cisco IOS or Cisco CG-OS software.
To install BBU 1 or BBU 2 (a second or third BBU) in the router:
1. Open the chassis door by following the steps in Opening and Closing the Router Chassis.
2. Align the BBU so that the locating pin and the female battery-to-battery connector are facing out and the locating notch is at the top of the router.
3. Slide the locating notch on the new BBU over the locating pin on the installed battery, and verify that the BBU male connector on the new BBU is aligned with the female connector on the installed BBU.
4. Press firmly against the new BBU to seat the connectors and connect the new BBU to the installed BBU.
5. Use your hand to loosely and evenly tighten the six captive screws on the new BBU into the corresponding six threaded connectors on the installed BBU.
6. Use the #1 Phillips screwdriver to tighten the screws to the installed BBU using 7-9 in-lbs of torque
7. Verify that the BBU has been successfully installed and is operating normally by viewing the status of the BBU LED. See Battery Backup Unit LED. The LED displays the following sequence:
a. Red fast blinking—BBU is powered on and is initializing.
b. Red and green alternate blinking— BBU is synchronizing with the router and the other BBUs.
c. The final BBU LED state is one of the following:
–Blinking amber—BBU detects that there is no AC power supplied to the router and begins discharging (supplying power to the router).
–Blinking green—The BBU was not fully charged when installed and is charging to full capacity. The router is powered by the AC power supply.
–Solid green—The BBU is fully charged. The router is powered by the AC power supply.
8. Close the chassis door by following the steps in Opening and Closing the Router Chassis.
Disabling and Enabling the BBU in the Router
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 wish 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.
The BBU can be disabled and enabled by using a hardware approach or by using software command line interface (CLI) commands.
Disabling the BBU
■Disabling the BBU via Hardware
■Disabling the BBU via the CLI
Note: The default setting is the BBU becomes enabled when it is connected to the router BBU cable.
Disabling the BBU via Hardware
Disable the BBU via BBU Cable Connector on the Router Cable Harness
1. Open the chassis door by following the steps in Opening the Router Door.
2. Locate the BBU cable connector attached to the base of BBU 1. Find the latch on the underside of the connector. Press the tab of the latch and pull it to disconnect the connector from BBU 1.
3. Tuck the BBU connector into the chassis door to prevent any interference with the closure of the door.
4. Close the chassis door by following the steps in Closing the Door.
Disabling the BBU via the CLI
Different BBU functionality can be disabled via the CLI:
■Disable the BBU discharge—for example, to inhibit the BBU discharge during storage, shipping or transport in order to preserve battery life.
■Disable the BBU operation—for example, to replace the battery in an installed and operating router.
The CLI operations are detailed in the following sections:
■Disabling the BBU Discharge in a Cisco CG-OS Router
■Disabling the BBU Discharge in a Cisco IOS Router
Disabling the BBU Discharge in a Cisco CG-OS Router
Note: Disable the BBU discharge—for example, during storage, shipping or transportation, in order to preserve battery life.
Note: When the BBU discharge is disabled by the backup-battery inhibit discharge command, the BBU does not charge, even if it is connected to AC power. The BBU discharge must be enabled by the backup-battery un-inhibit discharge command, and the BBU connected to AC power, for the BBU to charge.
To disable the BBU discharge in a Cisco CG-OS router:
1. Connect the router to an AC power source.
2. Enter the backup-battery inhibit discharge EXEC command:
Disabling the BBU Discharge in a Cisco IOS Router
Note: Disable the BBU discharge—for example, during storage, shipping or transportation, in order to preserve battery life.
Note: When the BBU discharge is disabled by the backup charge-discharge disable command, the BBU does not charge, even if it is connected to AC power. The BBU discharge must be enabled by the backup charge-discharge enable command, and the BBU connected to AC power, for the BBU to charge.
To disable the BBU discharge in a Cisco IOS router:
1. Connect the router to an AC power source.
2. Enter the backup charge-discharge disable EXEC command:
Disabling the BBU Operation in a Cisco CG-OS Router
Note: Disable the BBU operation—for example, when a battery is due for replacement in an installed and operational router.
To disable the BBU operation in a Cisco CG-OS router:
1. Connect the router to an AC power source.
2. Enter the backup-battery disable EXEC command:
Disabling the BBU Operation in a Cisco IOS Router
Note: You cannot disable BBU operation using the CLI on routers using the Cisco IOS operating system. You can only disable BBU operation using the CLI on routers using the Cisco CG-OS operating system.
Enabling the BBU
■Enabling the BBU via Hardware
Note: The default setting is the BBU becomes enabled when it is connected to the router BBU cable.
Enabling the BBU via Hardware
To enable the BBU (depending on the method used):
■Enable the BBU via BBU Cable Connector on the Router Cable Harness
Enable the BBU via BBU Cable Connector on the Router Cable Harness
1. Open the chassis door by following the steps in Opening the Router Door.
2. Locate the BBU cable connector in the chassis door. Find the socket on the base of BBU 1. With the latch of the connector facing the chassis door, press the connector into the socket.
3. Tuck the router cable harness into the chassis door to prevent any interference with the closure of the door.
4. Close the chassis door by following the steps in Closing the Door.
Enabling the BBU via the CLI
The default setting is the BBU becomes enabled when it is connected to the router BBU cable. If the BBU is disabled for any reason, you may need to enable it once more.
Different BBU functionality can be enabled via the CLI:
■Enable the BBU discharge—for example, used to reenable the BBU discharge after storage, shipping or transport in order to resume battery discharge.
■Enable the BBU operation—for example, used to enable a replacement battery in an installed and peritoneal router.
The CLI operations are detailed in the following sections:
■Enabling the BBU Discharge in a Cisco CG-OS Router
■Enabling the BBU Discharge in a Cisco IOS Router
Enabling the BBU Discharge in a Cisco CG-OS Router
Note: Enable the BBU discharge—for example, if it is in a disabled state after storage, shipping or transportation.
Note: When the BBU discharge is disabled by the backup-battery inhibit discharge command, the BBU does not charge, even if it is connected to AC power. The BBU discharge must be enabled by the backup-battery un-inhibit discharge command, and the BBU connected to AC power, for the BBU to charge.
To enable the BBU discharge in a Cisco CG-OS router:
1. Connect the router to an AC power source.
2. Enter the backup-battery un-inhibit discharge EXEC command:
Enabling the BBU Discharge in a Cisco IOS Router
Note: Enable the BBU discharge—for example, if a BBU is in a disabled state after storage, shipping or transportation.
Note: When the BBU discharge is disabled by the backup charge-discharge disable command, the BBU does not charge, even if it is connected to AC power. The BBU discharge must be enabled by the backup charge-discharge enable command, and the BBU connected to AC power, for the BBU to charge.
To enable the BBU discharge in a Cisco IOS router:
1. Connect the router to an AC power source.
2. Enter the backup charge-discharge enable EXEC command:
Enabling the BBU Operation in a Cisco CG-OS Router
Note: Enable the BBU operation—for example, after a replacement BBU is placed in an installed and operational router.
To enable the BBU operation in a Cisco CG-OS router:
1. Connect the router to an AC power source.
2. Enter the backup-battery enable EXEC command:
Enabling the BBU Operation in a Cisco IOS Router
Note: You cannot enable the BBU operation using the CLI on routers using the Cisco IOS operating system. You can only enable the BBU operation using the CLI on routers using the Cisco CG-OS operating system.
Working with the BBU in Transportation Mode
There are some discrepancies between the CLI commands and the NMS that could cause a BBU failure.
Two commands, do no battery transportation-mode and do battery charge-discharge enable, do not work from the NMS. The NMS reports the device configuration push was successful, and the re-registration was successful, however the settings remain unchanged on the router.
Ensure that when you are using a BBU that you make sure the configuration is correct using the CLI. For example:
When the router has the 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.
The transportation mode status is shown in the show platform battery output:
The transportation mode overrides the charge bit to enable it. Therefore, if the battery charge-discharge bit was previously disabled, it enables charge and the charge-discharge disable cli becomes redundant.
Battery Backup Unit LED
The BBU features a single LED that indicates the status of the BBU when it is installed in the router.
Figure 94 Battery Backup Unit LED Location
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Related Commands
CG-OS Battery BBU Commands
This section describes the battery backup commands for routers using the Cisco CG-OS operating system, including:
■backup-battery firmware upgrade
backup-battery firmware upgrade
Note: The backup-battery firmware upgrade command only works on routers using the Cisco CG-OS operating system.
To upgrade the BBU firmware, use the backup-battery firmware upgrade EXEC command in user EXEC mode:
When this command is issued, the firmware upgrade is executed in the background and a syslog message is displayed when the upgrade is complete.
To view the status of the BBU firmware download during the upgrade process, use the show environment power EXEC command in user EXEC mode. See show environment power.
show environment power
Note: The show environment power command only displays both the power statistical data and the battery backup status on routers using the Cisco CG-OS operating system. The command only displays the power statistical data on routers using the Cisco IOS operating system.
To display the power statistical data and battery backup status, use the show environment power command in user EXEC mode:
CGR1240# show environment power
A sample output from this command is:
The power supply summary section provides power data for the router and the backup battery status section provides status information on the BBU’s presence.
backup-battery enable
Note: The backup-battery enable command only works on routers using the Cisco CG-OS operating system.
To enable the BBU operation via the CLI, use the backup-battery enable command in user EXEC mode:
The default setting is the BBU becomes enabled when it is connected to the router BBU cable. The BBU automatically waits to detect that power is not being received from the AC power supply, and then begins to supply power to the router.
You can use the backup-battery enable command after a battery has been disabled and replaced in an installed and operational router, to reenable the replacement battery. When the BBU is enabled, the BBU LED appears on, and reflects the BBU operating state (idle, charging, discharging etc.).
Once the BBU is connected, the only way to disable is to use the backup-battery disable command. To enable the BBU again, issue the backup-battery enable command.
backup-battery disable
Note: The backup-battery disable command only works on routers using the Cisco CG-OS operating system.
To disable the BBU operation via the CLI, use the backup-battery disable command in user EXEC mode:
The default setting is the BBU becomes enabled when it is connected to the router BBU cable. The BBU automatically waits to detect that power is not being received from the AC power supply, and then begins to supply power to the router.
You can use the backup-battery disable command to disable a battery that is in an installed and operational router, and needs to be replaced. When the BBU is disabled, the BBU LED appears off.
Once the BBU is connected, the only way to disable is to use the backup-battery disable command. To enable the BBU again, issue the backup-battery enable command.
backup-battery reset
Note: The backup-battery reset command only works on routers using the Cisco CG-OS operating system.
To reset the BBU power (power off the BBU, then power it back on), use the backup-battery reset command in user EXEC mode:
This command is functional only when AC power is supplying power to the router. If you enter this command when the router is powered by the BBU, an error message is displayed.
backup-battery hard-reset
Note: The backup-battery hard-reset command only works on routers using the Cisco CG-OS operating system.
To reset the BBU power (power off the BBU, then power it back on) while you cannot communicate with the BBU through the UART interface, use the backup-battery hard-reset command in user EXEC mode:
backup-battery inhibit discharge
Note: The backup-battery inhibit discharge command only works on routers using the Cisco CG-OS operating system.
Note: When the BBU discharge is disabled by the backup-battery inhibit discharge command, the BBU does not charge, even if it is connected to AC power. The BBU discharge must be enabled by the backup-battery un-inhibit discharge command, and the BBU connected to AC power, for the BBU to charge.
To disable the BBU automatic discharge feature, use the backup-battery inhibit discharge command in user EXEC mode. Use this command to disable the BBU automatic discharge when you disconnect the router from AC power, and want to prevent the BBU from automatically discharging; for example when you are shipping the router, or transporting it between locations. When the BBU discharge is disabled, the BBU LED displays the amber slow blinking state. Use the backup-battery un-inhibit discharge command to enable the BBU automatic discharge after disabling it.
The backup-battery inhibit discharge command has two effects:
■With AC power on, the BBU does not charge.
■With AC power off, the BBU does not power the router (the BBU does not discharge).
This command is functional only when the BBU is supplying power to the router. If you enter this command when the router is powered by AC power, an error message is displayed.
Caution: Entering the backup-battery inhibit discharge command disables the BBU discharge immediately. You are not prompted to confirm the command. If you enter this command when the router is operating on the network and powered by the BBU, the router will immediately power down and will no longer operate on the network.
To disable the BBU discharge feature:
1. Connect the router to an AC power source.
2. Enter the backup-battery inhibit discharge EXEC command:
To reset the BBU to the default behavior (automatically begin discharging when the router is not receiving AC power) use the backup-battery un-inhibit discharge command:
1. Connect the router to an AC power source.
2. Enter the backup-battery un-inhibit discharge EXEC command:
The backup-battery un-inhibit discharge command has two effects:
■With AC power on, the BBU charges.
■With AC power off, the BBU powers the router (the BBU discharges).
poweroff module number backup-battery
Note: The poweroff module number backup-battery command only works on routers using the Cisco CG-OS operating system.
To configure the router to power off specific modules (including the integrated Ethernet switch) when the router switches to BBU power, use the poweroff module number backup-battery command in global configuration mode.
By default, all modules continue to operate normally when the router is powered by the BBU. Enter this command for each module that you want to automatically shut down.
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Configures the router to power down the indicated module when the router switches to BBU power. number —The number of module that is powered down: ■ ■ |
To configure the router to shut down the Ethernet switch (all Ethernet ports) when the router is powered by the BBU, enter this command:
To configure the router to shut down the module installed in Slot 6 when the router is powered by the BBU, enter this command:
Use the no form of the command to reset a module to the default behavior: continue to operate normally when the router switches to BBU power. For example:
For detailed information on configuring the router, including configuration modes and saving configurations, see the router software configuration guides on Cisco.com, at: www.cisco.com/go/cgr1000-docs
Cisco IOS BBU Commands
battery charge-discharge
Note: The battery charge-discharge command only works on routers using the Cisco IOS operating system.
Note: When the BBU discharge is disabled by the battery charge-discharge disable command, the BBU does not charge, even if it is connected to AC power. The BBU discharge must be enabled by the battery charge-discharge enable command, and the BBU connected to AC power, for the BBU to charge.
To change the enabled status of the BBU automatic discharge feature, use the battery charge-discharge command in user EXEC mode. The command syntax is:
battery charge-discharge {enable | disable}
The default behavior of the BBU is to automatically begin discharging when the router is not receiving AC power.
Use the battery charge-discharge disable command to disable the BBU automatic discharge when you disconnect the router from AC power, and want to prevent the BBU from automatically discharging; for example when you are shipping the router, or transporting it between locations. When the BBU discharge is disabled, the BBU LED displays the amber slow blinking state. Use the battery charge-discharge enable command to enable the BBU automatic discharge after disabling it.
The battery charge-discharge disable command has two effects:
■With AC power on, the BBU does not charge.
■With AC power off, the BBU does not power the router (the BBU does not discharge).
This command is functional only when the BBU is supplying power to the router. If you enter this command when the router is powered by AC power, an error message is displayed.
Caution: Entering the battery charge-discharge disable command disables the BBU discharge immediately. You are not prompted to confirm the command. If you enter this command when the router is operating on the network and powered by the BBU, the router will immediately power down and will no longer operate on the network.
To reset the BBU to the default behavior (automatically begin discharging when the router is not receiving AC power), use the battery charge-discharge enable command.
The battery charge-discharge enable command has two effects:
■With AC power on, the BBU charges.
■With AC power off, the BBU powers the router (the BBU discharges).
To disable the BBU discharge feature:
1. Connect the router to an AC power source.
2. Enter the battery charge-discharge disable EXEC command:
To enable the BBU discharge feature:
1. Connect the router to an AC power source.
2. Enter the battery charge-discharge enable EXEC command:
show platform battery
Note: The show platform battery command only works on routers using the Cisco IOS operating system.
To display battery data information, use the show platform battery command in user EXEC mode. The command syntax is:
show platform battery [brief | cable | details | short | sprom | unit]
The following are examples of the command, with sample output:
The command output indicates a battery is not present.
The command output indicates that the battery is charged to a 92% level, has q2 hours and 27 minutes battery life available, and is in an idle state.
The command output indicates that a battery cable is connected up (Present......1). The output represents a well-connected functional cable.
The command output has a range of battery status information including charge capacity, voltage and current levels, temperature, time data, and firmware information.
The command output displays backup battery summary information in short format (formatted for a management device).
The command output shows the EEPROM summary information for battery backup units 0, 1, and 2 that is used to troubleshoot the battery.
The command output displays a range of charge, capacity, and parameter information for battery backup units 0, 1, and 2. The firmware version is version 5219.
show environment power
Note: The show environment power command only displays the power statistical data on routers using the Cisco IOS operating system. The command displays both the power statistical data and the battery backup status on routers using the Cisco CG-OS operating system.
To display the power statistical data, use the show environment power command in user EXEC mode:
CGR1240# show environment power
A sample output from this command is:
The command output has power supply summary information that provides power data for the router.
BBU Technical Specifications
This section describes the specifications and standards supported by the BBU.
Note: For BBU connector and cable specifications, see Connector and Cable Specifications.
■Operating and Storage Temperatures
Router Power Path Selection
During normal operation, the router is powered by the integrated AC power supply. The BBU enters discharge mode and begins providing power to the router when the AC power is interrupted outside a range of 85V to 250V for more than 20 ms. The BBU charges or discharges only; it does not support both simultaneously.
Discharge Conditions
Charge Conditions
Operating and Storage Temperatures
Battery Life
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