Cisco Cisco Broadband Access Center for Cable 4.1
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Cisco Broadband Access Center for Cable Administrator’s Guide
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Chapter 5 Configuring Broadband Access Center for Cable
Automatic FQDN Generation
Step 1
From the <BRP_HOME>/rdu/bin directory, run this script on the RDU:
generateSharedSecret.sh <password>
Where the <password> is any password, 6 to 20 characters in length, that you create. This password is
then used to generate a 46 byte key. This key is stored in a file, called keymaterial.txt, that is located in
the <BRP_HOME>/rdu/conf directory.
then used to generate a 46 byte key. This key is stored in a file, called keymaterial.txt, that is located in
the <BRP_HOME>/rdu/conf directory.
Step 2
Run the packetcable snmp key-material DPE CLI command, with the <password> used in step 1 to
generate that key.
generate that key.
This generates the same 46 byte key on the DPE and ensures that the RDU and DPE(s) are in sync and
can communicate securely.
can communicate securely.
Automatic FQDN Generation
When configuring PacketCable, a fully qualified domain name (FQDN) must reside in the BAC database
whenever the KDC queries the registration server for that FQDN. The BAC automatic FQDN generation
feature is not limited to use by any single voice technology, but can be used by any other BAC
technologies.
whenever the KDC queries the registration server for that FQDN. The BAC automatic FQDN generation
feature is not limited to use by any single voice technology, but can be used by any other BAC
technologies.
Automatically Generated FQDN Format
An automatically generated FQDN in BAC follows this format:
prefix<htype>-<hlen>-aa-bb-cc-dd-ee-ffsuffix.domain
Where:
•
prefix, suffix, and domain—Identifies information set using either the BAC administrators user
interface or the provisioning API.
interface or the provisioning API.
Note
In the example FQDN used here, prefix1,6,aa-bb-cc-dd-ee-ffsuffix is the generated host name and
domain is the domain name.
domain is the domain name.
•
1,6,aa-bb-cc-dd-ee-ff—is the device MAC address
The entry of a prefix and suffix property is optional. If you do not specify these properties, and a host
name is not specified during PacketCable MTA provisioning and, if neither the prefix or suffix property
is defined in the BAC property hierarchy, the device’s MAC address followed by the domain name are
used as the generated FQDN.
name is not specified during PacketCable MTA provisioning and, if neither the prefix or suffix property
is defined in the BAC property hierarchy, the device’s MAC address followed by the domain name are
used as the generated FQDN.
For example:
A device with the MAC address 1,6,aa:bb:cc:dd:ee:ff will have this FQDN generated:
aa-bb-cc-dd-ee-ff.domain