DHCP Pools (IPv6)

Last Updated : Jun 19, 2024 |

Navigation: System > LAN > DHCP Pools (IPv6)

You can use DHCP pools to configure multiple sets of IPv4 addresses that the IP Office can allocate when configured as a stateful DHCPv6 server.

  • IP Office Manager displays these settings when you have enabled Advanced on the System > LAN1 > Settings (IPv6) tab.

  • Supported on Linux-based IP Office R12.1 systems only. To enable IPv6 support, select LAN1 > LAN Setting (IPv6) > IPv6 and/or LAN2 > LAN Setting (IPv6) > IPv6.

  • You can configure up to 64 pools.

  • The IP Office uses the IP Address and Number of DHCP IP Addresses settings set on the LAN Setting (IPv6) tab for the first pool.

These settings are mergeable. However, the following actions require a merge with service disruption:

  • Changing the Start Address value for an existing DHCP Pool of addresses.

  • Decreasing Pool Size for an existing DHCP Pool of addresses.

  • Deleting an existing DHCP Pool of addresses.

Field

Description

Apply to Avaya IP Phones Only

Default = Off.

When enabled, the IP Office only responds to DHCP requests from Avaya IP phones. Other devices must use static addresses or obtain their address from another DHCP server.

  • In addition, Avaya IP phones will complete DHCP only with a DHCP server configured to support the same Site Specific Option Number (SSON) as set on the phone. For IP Office, the SSON numbers it supports are set on the System > LAN1 > VoIP and System > LAN2 > VoIP sub-tabs.

  • After changing this setting, you must reboot DHCP client devices to force IP addresses updates.

DNS Server (IPv6)

Default = :: (Do not use)

The IPv6 address of the DNS server. If the IP Office system is acting as a DHCP server, in addition to providing clients with their IP address settings, it can also provide them with DNS if requested by the client.

  • If left at the default, the IP Office system uses its own LAN address as the DNS server for DHCP clients.

  • The IP Office does not support DNS priority. If the DNS response contains multiple addresses with priority, the IP Office only uses the first address.

Backup DNS Server (IPv6)

Default = :: (Do not use)

The alternate IPv6 DNS server address clients can use if the server address above does not respond.

DHCP Pool

The first pool matches the IP Address and Number of DHCP IP Addresses on the LAN Setting (IPv6) sub-tab. When adding or editing pools, the options are:

Setting

Description

Start Address

Default = Blank

Sets the first IP address in the pool.

  • The IP Office supports IPv6 addresses in the following formats:

    • Full address: For example, 2001:0000:040F:0000:0000:0000:805B:001B.

    • Replace one series of :0000: parts with ::. For example, 2001:0000:040F::805B:001B.

    • Replace any individual :0000: parts with :0:. For example, 2001:0:040F::805B:001B.

    • Remove leading 0 zeros after any : colon. For example, 2001:0:40F::805B:1B.

Pool Size

Default = 0, Range = 1 to 500

Set the number of client IP addresses available in the pool.
Related information
LAN1