Cisco 7000 Hardware Installation And Maintenance page 281

HIP LEDs
Four LEDs on the HIP indicate different states of the HSSI interface. As with the other interface
processors, the enabled LED goes on to indicate that the HIP is enabled for operation. The four LEDs
above the HSSI port (see Figure B-13) indicate the following.
Figure B-13
•
RT (Receive Timing)—When on, indicates that the HIP has detected a RxC signal. During
normal operation, this signal is received from the external DSU. During loopback, this signal is
generated internally.
•
RD (Receive Data)—When on, indicates that the HIP has detected, and is able to receive packets
from, the external DSU.
•
ST (Send Timing)—When on, indicates that the HIP is transmitting a TxC signal to the external
DSU. During normal operation, this signal is derived from the RT signal from the external DSU.
During loopback, this signal is generated internally.
•
C (Connected)—When on, indicates normal operation; the HIP is properly connected to the
external DSU, and TA (DTE available) and CA (DCE available) are active. When off, indicates
that the HIP is in loopback mode or is not connected to the DSU.
HIP LEDs
Interface Processor LEDs
Reading LED Indicators B-277