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Configuring Subscriber-End Broadband Access Router Features
Subscriber-End Broadband Access Router Initial Power-Up Sequence
MC-628
Cisco IOS Multiservice Applications Configuration Guide
4. Establish IP connectivity. After the next MAP message broadcast, the router uses
a shared require timeslot to invoke DHCP to establish
IP connectivity with the TCP/IP network at the
headend.
The DHCP server sends a response containing the
router IP address and the IP addresses for the default
gateway, ToD server, and TFTP server, and the
DOCSIS configuration file to be downloaded.
Depending on the particular network configuration,
other information could be provided, such as the IP
addresses for a syslog server or security server.
Note The DHCP server is typically a dedicated
server at the headend, but it could also be a
CMTS such as a Cisco uBR7200 series
universal broadband router.
The router configures itself for the specified IP address
and gets the current date and time from the specified
ToD server.
5. Establish the time of day. The cable access router accesses the ToD server for the
current date and time, which is used to create time
stamps for logged events (such as those displayed in
the MAC log file).
6. Establish security. Full Security, a planned enhancement to Baseline
Privacy, is not fully defined nor currently supported by
the DOCSIS specification, and is therefore not
supported by the Cisco uBR900 series.
Table 40 Cable Access Router Initialization Sequences and Events (continued)
Sequence Event Description