ESR series service routers.ESR-Series. User manual
Indicator name Indicator function LED State Device State
Power Device power LED. Green Device power is OK. Main power
supply, if installed, is
operational.
Red Main power supply failure, fault,
or the primary network is
missing.
Off Device internal power supply
failure.
Fan Cooling fan status. Off All fans are operational.
Red One or more fans has failed.
Possible cause of failure: at
least one of the fans has
stopped or is working at lower
rpm.
1
Not supported in current firmware version.
ESR-21/ESR-20 light indication
Gigabit Ethernet copper interface statuses are represented by two LEDs – green LINK/ACT LED and amber
SPEED LED.
Table 45 – Light indication of copper and SFP interfaces status
SPEED indicator is lit LINK/ACT indicator is lit Ethernet interface state
Off Off The port is disabled or connection is not
established.
Off Solid on 10 Mbps or 100 Mbps connection is
established.
Solid on Solid on 1000 Mbps connection is established.
X Flashes Data transfer is in progress.
Figure 55 – Location of SFP connector indicators
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