Cisco uBR900 Series Configuring page 22

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
1
2
3
4
5
22 Cisco IOS Release 12.0(7)T
Cable Modem Initialization Flowchart
Power
on
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
6
security
Security
established
Transfer
7
operational
parameters
Transfer
complete
Register with
the Cisco 8
uBR7246
Registration
complete
Baseline
9
privacy
initialization
Baseline
privacy
initialized
Operational
10