User's Manual

IPv6 address format
When an IPv6 address is entered different but equivalent formats can be used for the same
address. For example, the following addresses are all equivalent:
2001:0db8:0000:0000:0000:0000:1428:57ab
2001:0db8:0000:0000:0000::1428:57ab
2001:0db8:0:0:0:0:1428:57ab
2001:0db8:0:0::1428:57ab
2001:0db8::1428:57ab
2001:db8::1428:57ab
Any of the above formats can be entered. When the IP address is displayed again the
abbreviated format is used, for example: 2001:db8::1428:57ab. This same rule applies to
Phone IP address, DNS Server address, Provisioning Server address, and SIP Server
addresses.
IPv6 limitations
The list below provides IPv6 limitations.
• IPv6 only mode is not supported.
• Site Local address, Anycast address, IPv6 Addresses with Embedded IPv4. IPv4-Mapped
IPv6 Address, Unicast-Prefix-based IPv6 Multicast address are not supported. However,
if they are obtained through Neighbor Discovery (ND) or DHCPv6, they are assigned to
the interface.
• The Avaya 1120E IP Deskphone provides a smaller FLASH memory footprint (8 Mb),
which can limit the amount of functionality that can be implemented (as compared to the
Avaya 1140E IP Deskphone with 16 MB of FLASH memory).
• Plug-and-Play is not supported due to DHCPv6 limitations as some DHCPv6 options are
not supported.
• A customer must engineer a network to provide both DHCPv4 and DHCPv6 servers.
• BootC does not support IPv6.
• The IP Deskphone supports DHCPv4/DHCPv6, FTPv4/FTPv6/TFTPv4/HTTPv4 and
DNSv4/DNSv6 for automatic firmware download.
• For IPv6 RTP only or SRTP only modes are supported. Mixture of RTP and SRTP is not
supported.
• SRTP BE-Cap Neg cannot be configured when IPv6 is enabled
IPv6 address format
SIP Software for Avaya 1100 Series IP Deskphones-Administration November 2012 305