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7. Operation and Maintenance
7-6 December 2002 9700-A2-GB20-20
Control Lead Descriptions
In addition to these LEDs, additional control leads can be monitored through the
Display LEDs & Control Leads screen. They are described in Table 7 -2, Control
Leads. Port-1 leads do not apply to a router.
Network LEDs
ATM
(9783)
ATM Link Status Green
or
Yellow
Green – The ATM link is active with cell
delineation in sync.
Yellow – The ATM link is active with loss of cell
delineation.
OFF – The ATM link is not active.
ATM
(9788)
ATM Link Status Green Green – The ATM link is active with cell
delineation in sync.
OFF – The ATM link is active with loss of cell
delineation, or the ATM link is not active.
FR
(9720)
Frame Relay
Link Status
Green ON – LMI is up.
OFF – LMI is down.
DSL DSL Link Status Green ON – The DSL link is ready to transmit and
receive data.
OFF – The DSL link has not been established.
Blinking – The DSL link is training.
Port LED — CSU/DSU
OK Port Status Green ON – The user data port is up and ready for
operation.
OFF – No device is detected on the user data
port.
Port LED — Router
OK Interface Status Green ON – The Ethernet port is up and ready for
operation.
OFF – No device is detected on the Ethernet
port.
Table 7-1. LED Descriptions (2 of 2)
Label Indication Color What It Means