What are the recommended methods for forcing a BIG-IP system to standby mode? (Choose two answers)

The two recommended and standard methods for an administrator to manually force an active BIG-IP system into standby mode are through the Configuration Utility (GUI) and the TMOS Shell (CLI). The GUI method involves navigating to Device Management > Devices, selecting the local device (self), and clicking the "Force to Standby" button. The CLI method involves executing the command tmsh run /sys failover standby. Both actions cause the device to release its active status for any traffic groups it owns, triggering a failover to a peer device.

A. The command tmsh run /sys failover device standby is incomplete. The correct syntax requires a device name, and it is used to force a specific (potentially remote) device to standby.

C. The "Force to Standby" option is located on the Device Management > Devices page for the specific device, not under the Traffic Groups page in the manner described.

1. F5 Networks. (2021). K15122: Forcing the active BIG-IP system to standby. MyF5. This article details the two primary methods. It provides the exact GUI path Device Management > Devices > (Self) > Force to Standby and the CLI command tmsh run /sys failover standby.

2. F5 Networks. (2021). BIG-IP TMOS: Implementations. Chapter: Setting up a High Availability System. The manual describes administrative failover procedures, including forcing a device to standby via the GUI and CLI as standard operational tasks.

3. F5 Networks. (2021). Traffic Management Shell (tmsh) Reference Guide. Section: sys failover. The reference guide documents the standby command, stating it "Causes the system to go into the standby state."