Control processor blade overview

The CPX6 control processor blades are half the slot height of other SAN256B-6SAN512B-6 blades. Two CPX6 control processor blades are stacked vertically in the half slots on the left side of the chassis to provide CP redundancy. CP0 is installed in slot 1, while CP1 is installed in slot 2.

The control processor (CP) blade contains the control plane for the device and hosts the Fabric OS that manages all hardware within the device. It also provides the following external connections for device configuration, firmware downloads, service, management, and monitoring functions.

USB port for firmware download and supportsave data.
Serial console RJ45 port.
10/100/1000Base-T RJ45 Ethernet port for device management and configuration.
Note: Half duplex operation is not supported at 10 or 100 Mbps speed.
10/100/1000Base-T RJ45 Ethernet port for service.
10 Gbps Base-T RJ45 Ethernet port (reserved for future use).

The two 10/100/1000 Mbps Ethernet ports are bound together as a single logical network interface. One port is selected as the active interface, while the other is select as the standby interface. All traffic is transmitted over the active port while no traffic is transmitted over the standby interface. If the primary Ethernet port fails (due to something other than power loss), the standby port becomes active and immediately takes over data transmission to retain link layer communication.

Note: Connecting the CP blades to a private network or VLAN is recommended.

The blade contains a blue LED to indicate active CP status, green LEDs on Ethernet ports to indicate link and activity, and green and amber LEDs to indicate blade power and status.

A bright, white beacon LED is located just beneath the blade power and status LEDs. You can enable this LED to illuminate on both CP blades so that you can easily locate the blades and chassis in an equipment rack. To enable or disable beaconing on both blades, log into the chassis and enter the chassisbeacon command as follows:

To enable beaconing:

chassis:admin> chassisbeacon 1
chassisBeacon success 1

To disable beaconing:

chassis:admin> chassisbeacon 0
chassisBeacon success 0

To display beaconing status:
Note: Value in the following example shows 0 when beaconing is off and 1 if beaconing is on.
```
chassis:admin> chassisbeacon
Value = 0
```

For details on LED location and operation, refer to Interpreting control processor blade LEDs.