User Manual

Setting Up Your System
69
IPv6 Support
Because Internet Protocol version 4 (IPv4) uses a 32-bit address, it cannot meet the increased
demands for unique IP addresses for all devices that connect to the Internet. Therefore,
Internet Protocol version 6 (IPv6) is the next generation network layer protocol, which designed
as a replacement for the current IPv4 protocol.
IPv6 is developed by the Internet Engineering Task Force (IETF) to deal with the long-anticipated
problem of IPv4 address exhaustion. Yealink Skype for Business phone supports IPv4 addressing
mode, IPv6 addressing mode, as well as an IPv4&IPv6 dual stack addressing mode. IPv4 uses a
32-bit address, consisting of four groups of three decimal digits separated by dots; for example,
192.168.1.100. IPv6 uses a 128-bit address, consisting of eight groups of four hexadecimal digits
separated by colons; for example, 2026:1234:1:1:215:65ff:fe1f:caa.
VoIP network based on IPv6 can provide end-to-end security capabilities, enhanced Quality of
Service (QoS), a set of service requirements to deliver performance guarantee while transporting
traffic over the network.
If you configure the network settings on the Skype for Business phone for an IPv6 network, you
can set up an IP address for the Skype for Business phone either by using SLAAC (ICMPv6),
DHCPv6 or by manually entering an IP address. Ensure that your network environment supports
IPv6. Contact your ISP for more information.
IPv6 Address Assignment Method
Supported IPv6 address assignment methods:
 Manual Assignment: An IPv6 address and other configuration parameters (e.g., DNS
server) for the Skype for Business phone can be statically configured by an administrator.
 Stateless Address Autoconfiguration (SLAAC)/ ICMPv6: SLAAC is one of the most
convenient methods to assign IP addresses to IPv6 nodes. SLAAC requires no manual
configuration of the Skype for Business phone, minimal (if any) configuration of routers,
and no additional servers. To use IPv6 SLAAC, the Skype for Business phone must be
connected to a network with at least one IPv6 router connected. This router is configured
by the network administrator and sends out Router Advertisement announcements onto
the link. These announcements can allow the on-link connected Skype for Business phone
to configure itself with IPv6 address, as specified in RFC 4862.
 Stateful DHCPv6: The Dynamic Host Configuration Protocol for IPv6 (DHCPv6) has been
standardized by the IETF through RFC 3315. DHCPv6 enables DHCP servers to pass
configuration parameters such as IPv6 network addresses to IPv6 nodes. It offers the
capability of automatic allocation of reusable network addresses and additional
configuration flexibility. This protocol is a stateful counterpart to “IPv6 Stateless Address
Autoconfiguration” (RFC 2462), and can be used separately or concurrently with the latter
to obtain configuration parameters.