Cisco Cisco Digital Service Access Node (DSAN) 8211 Troubleshooting Guide
Registration and Connection Sequence
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Registration and Connection Sequence
This section describes the events that must take place to complete registration and
connection.
connection.
Downstream Channel Lock
Upon initialization, the eCM searches for a CMTS carrier frequency, locks onto a
valid carrier, and obtains the downstream channel descriptor (DCD). Once it obtains
the DCD, the eCM verifies that the Cisco CA Client ID (0xE00) is present.
valid carrier, and obtains the downstream channel descriptor (DCD). Once it obtains
the DCD, the eCM verifies that the Cisco CA Client ID (0xE00) is present.
Troubleshooting
Review CLI diag page 4.1 to confirm that carrier frequency and RF levels are as
expected. See RF Level Setup (on page 22) for help with identifying expected RF
levels as needed.
expected. See RF Level Setup (on page 22) for help with identifying expected RF
levels as needed.
Note: A very common mistake is not to specify the Cisco CA Client ID (0xE00) in the
DCD. If the Cisco CA client ID is not specified in the DCD, the eCM will continue to
search for a CMTS downstream channel that has it. If this occurs, contact your CMTS
administrator for assistance.
DCD. If the Cisco CA client ID is not specified in the DCD, the eCM will continue to
search for a CMTS downstream channel that has it. If this occurs, contact your CMTS
administrator for assistance.