ZyXEL Communications P-974H - V3.70, Manual

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Chapter 3 Status
P-974H/HW Series User’s Guide
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To provide Internet access services, a cable provider’s CMTS gets the incoming
traffic from the ZyXEL Device and routes the traffic to an ISP (Internet Service
Provider) to the Internet.
Boot State
When downloading the configuration file and booting, your ZyXEL Device passes
through several negotiation stages with the cable operator’s CMTS. All
communication steps: TFTP, DHCP Offer/Response, and Time Server must
complete in order for the configuration to be successful. TFTP is the download
protocol used to install the configuration file.
If there is a problem making a TFTP connection with the cable operator’s CMTS,
you will see the message Waiting for TFTP. If the ZyXEL Device does not receive
a DHCP offer from the cable operator’s CMTS you will see the message Waiting
for DHCP Offer. Once the ZyXEL Device has responded to the DHCP offer it again
waits for a response from the CMTS, if it does not receive a response you will see
the message Waiting for DHCP Response. If the cable operator’s time server
does not respond your will see the message Waiting for Timer Server. If the
download and installation of the configuration file succeeds you will see the
message Operational.
Your cable modem must receive an offer of a DHCP IP Address from the cable
operator’s CMTS and respond to that offer in order to set your IP Address. First
your cable modem is Waiting for DHCP Offer, if the offer is received by your
cable modem it responds Waiting for DHCP Response to the cable operator’s
CMTS. Once a response is received your IP Address is set and can be viewed
under the CM IP Address section of the Connection screen or in the Software
status screen. Note that the DHCP IP Address setting must be completed
successfully in order for your cable modem to download the configuration file.
Configuration File
This is the name of the cable modem configuration file downloaded from the cable
operator’s CMTS using the TFTP protocol. This is a binary format file which must
be DOCSIS 2.0 compliant (see RFC 2132 for additional information).
Security
Your cable modem has features built-in to run Baseline Privacy (BP). BP is used as
a privacy mechanism to protect user data flowing across the cable network and to
prevent unauthorized access to the cable operator’s CMTS data flowing across the
network. BP also supports access control lists (ACLs), filtering, tunnels, spoof
protection, and source IP filtering on the RF subnets to prevent users from using
IP addresses that are invalid. BP security information must be included in your
cable operator’s configuration file to enable security. If your cable operator did not