Chapter 23: IPv6
STANDARD Revision 1.0
C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved.
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Purpose
CLI Command
Displays the contents of the prefix delegation
database. If the link-local address is supplied, the
command filters on that address.
show ipv6 pd database [<link local ipv6-address>]
Includes active delegated prefixes associated with the
CM specified in the command.
show cable modem detail <mac address>
To enable [disable] debug logging of updates and
events related to the PD database use the first
command.
The second command logs all Bulk Lease Query
connections and messages between the C4/c CMTS
and the DHCPv6 server. The [no] version disables
logging.
Use show logging history to display the logs of these
commands.
configure logging debug dhcpv6 pd [no]
configure logging debug dhcpv6 pd blq [no]
show logging history
Bulk Lease Query
The C4/c CMTS uses Bulk Lease Query as a means to recover binding information from the DHCPv6 server(s) in the event
of a reboot. You can also use the Bulk Lease Query CLI commands to refresh the PD database manually if necessary. This
binding information is used to restore routing to delegated prefixes. (See RFC 5460, DHCPv6 Bulk Lease Query).
The C4/c CMTS issues a query of this type whenever a cable-mac virtual router interface (vri), in other words, a layer 3
interface, becomes operational. This approach keeps the PD database up to date.
The Source IP (SIP) of bulk lease query messages is the same as the SIP of the DHCPv6 Relay Forward messages.