Allied Telesis AT-SBx31CFC960 - Manual (Page 207)

SwitchBlade x3112 Chassis Switch and AT-SBx31CFC960 Card Installation Guide
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across the backplane or on its SFP+ slots. Only after it has fully
synchronized its files with the active card does the inactive card
begin to forward packets across the backplane and from its
transceiver ports.
The phases of the initialization processes and their approximate times are
shown in Table 24.
Using the LEDs
to Monitor the
Initialization
Process
There are two ways to monitor the phases of the initialization process. One
way is to use the LEDs on the controller card. For phase 1, examine the M/
S LED in the System Status LEDs on the controller card. It flashes amber
while the card initializes its management software and changes to solid
green at the completion of the phase. If the chassis has two controller
cards, the M/S LED continues to flash amber on the inactive card until the
card has synchronized its database with the active controller card.
To monitor phase 2, watch the SBx Status LEDs. There are twelve LEDs
(numbered 0 to 11), one for each slot. The LED for a slot flashes green
while the corresponding card initializes its management software and
configures its settings in accordance with the settings from the active
controller card. The LED changes to solid green when the corresponding
line card completes the initialization process and begins forwarding traffic.
If there are two controller cards, you can monitor phase 3 by viewing the
M/S LEDs on the control cards. The LED on the active controller card turns
Table 24. Switch Initialization Phases
Phase Description Config 1 Config 2 Config 3
1 The control card initializes its management
software. 1 minute 1 minute 1 minute
2 The line cards reset, initialize their
management software, and receive their
configuration settings from the active
control card. At the completion of this
phase, the Ethernet line cards begin to
forward traffic from their ports and the active
control card forwards packets across the
backplane. If the chassis has two control
cards, the inactive card does not begin to
forward traffic across the backplane until the
completion of phase 3. 1 minute 1 minute 1 minute
3 The inactive control card matches its
database and load files with the active
control card. Afterwards, it joins with the
active card in forwarding traffic across the
backplane, thereby increasing the
bandwidth per slot to 40Gbps. NA 30 seconds 30 seconds
to 3 minutes