Cabletron Systems 9032578-05 manual Hot Swapping a Secondary Control Module

Chapter 2: Hot Swapping Line Cards and Control Modules

Hot Swapping a Secondary Control Module

If you have a secondary Control Module installed on the SSR, you can hot swap it with another Control Module or line card.

Warning: You can only hot swap an inactive Control Module. You should never remove the active Control Module from the SSR. Doing so will crash the system.

The procedure for hot swapping a Control Module is similar to the procedure for hot swapping a line card. You must deactivate the Control Module, remove it from the SSR, and insert another Control Module or line card in the slot.

Deactivating the Control Module

To deactivate the Control Module:

1.Determine which is the secondary Control Module.

Control Modules can reside in slot CM or slot CM/1 on the SSR. Usually slot CM contains the primary Control Module, and slot CM/1 contains the secondary Control Module. On the primary Control Module, the Online LED is lit, and on the secondary Control Module, the Offline LED is lit.

Note: The Offline LED on the Control Module has a different function from the Offline LED on a line card. On a line card, it means that the line card has been deactivated. On a Control Module, a lit Offline LED means that it is standing by to take over as the primary Control Module if necessary; it does not mean that the Control Module has been deactivated.

2.Press the Hot Swap button on the secondary Control Module.

When you press the Hot Swap button, all the LEDs on the Control Module (including the Offline LED) are deactivated. Figure 3 shows the location of the Offline LED and Hot Swap button on a Control Module.

SSR-CM2			CONTROL MODULE
Console	10/100 Mgmt		Online Offline
	RST SYS	OK HBT
			Hot
		ERR DIAG	Swap

Hot Swap Button

Offline LED

Figure 3. Location of Offline LED and Hot Swap Button on a Control Module

16 SmartSwitch Router User Reference Manual