Dhcpv6 Features; High Availability Support For Dhcpv6 - Cisco ASR 9000 Series Configuration Manual

Establishing Subscriber Sessions
Command or Action
Setting Up DHCPv6 Parameters: An example
configure
dhcp ipv6
profile my-server-profile server
dns-server 1:1:1::1
domain-name my.domain.name
lease 1 6 0
class class1
prefix-pool my-server-delegated-prefix-pool
address-pool my-server-address-pool
end
!!

DHCPv6 Features

DHCPv6 is widely used in LAN environments to dynamically assign host IP addresses from a centralized
server. This dynamic assignment of addresses reduces the overhead of administration of IP addresses. DHCPv6
also helps conserve the limited IP address space. This is because IP addresses no longer need to be permanently
assigned to hosts; only those hosts that are connected to the network consume IP addresses.
The DHCPv6 features supported in BNG are:

High Availability Support for DHCPv6

High availability support for DHCPv6 includes:
Linecard Online Insertion and Removal
Linecard Online Insertion and Removal (OIR) enables you to replace faulty parts without affecting the system's
operations. When a card is inserted, power is available on the card, and it initializes itself to start being
operational.
DHCPv6 bindings are not affected by Linecard OIR.
Note
OL-28375-03
Cisco ASR 9000 Series Aggregation Services Router Broadband Network Gateway Configuration Guide, Release
Purpose
end—Prompts user to take one of these actions:
• Yes— Saves configuration changes and exits
the configuration session.
• No—Exits the configuration session without
committing the configuration changes.
• Cancel—Remains in the configuration mode,
without committing the configuration
changes.
DHCPv6 Features
4.3.x
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