Feature Overview
The sequence numbers shown in Table 3 are also shown in Figure 5 below. The Cisco uBR900 series cable access router will complete all the steps shown in the table and flowchart each time it needs to reregister with the CMTS.
Figure 5 | Cable Modem Initialization Flowchart |
Power
on
1
2
3
4
5
Scan for
downstream
channel
Downstream
sync
established
Obtain
upstream
parameters
Upstream parameter acquired
Start
Ranging
Ranging and
auto adjust completed
Establish
IP
connectivety
IP
complete
Establish
time of
day
Time of day established
Establish
security 6
Security
established
Transfer
operational 7 parameters
Transfer complete
Register with
the Cisco 8 uBR7246
Registration
complete
Baseline
privacy9 initialization
Baseline
privacy
initialized
Operational 10
12960
