Allied Telesis SwitchBlade x8106 - Manual (Page 45)

SwitchBlade x8106 Chassis Switch Installation Guide
45
The components on the card are identified in Figure 22.
Figure 22. AT-SBx81CFC400 Controller Fabric Card
Where two controller cards are installed in the chassis, they provide an
active/active architecture. The packet processors on both controller cards
are fully utilized to double the available backplane bandwidth from 40 to 80
Gbps per Ethernet line card.
One of the controller cards becomes the active master. In normal
operations, this is the controller card in slot 5. The active master manages
the system and processes CPU bound network traffic. The standby master
runs all network protocol modules and is kept in sync with the active
master card, so as to be available in hot-standby for near instantaneous
fail over, if required.
If the active master card is hot-swapped out, the standby master becomes
the active master. It takes over all control functions almost
instantaneously. Testing has shown no noticeable disruption to streaming
video.
You can determine the state of the controller card by viewing the CFC LED
on the card. The controller card is the active master when the LED is solid
green and the standby master when the LED is solid amber.
SYS Status LEDs
The SYS (System) Status LEDs on the controller fabric card display
general status information about the controller card, power supplies, and
fan module. The LEDs are defined in Table 10 on page 46.