Allied Telesis AT-S94 - Manual (Page 29)

Configuring IPv6
Page 29
Defining the IPv6 Default Gateway
The IPv6 Default Gateway Page enables you to configure the IPv6 address of the next hop that can be used to
reach the network. Two IPv6 Link-Local address formats are used: standard and one with a specified IPv6
interface identifier. For IPv6, the configuration of the default gateway is not mandatory, as hosts can automatically
learn of the existence of a router on the local network via the router advertisement procedure.
Unlike IPv4, the IPv6 default gateway can have multiple IPv6 addresses, which may include only one user-defined
static address and multiple dynamic addresses that are learned via router advertised message provided in the
IPv6 Default Gateway configuration. The user-defined default gateway has a higher precedence over
automatically advertised addresses. It should be noted that configuring a new static default gateway without
deleting the previously configured one overwrites the previous configuration.
• When removing an IP interface, all of its default gateway IP addresses are removed.
• An Alert message appears when attempting to insert a global IPv6 address.
• An Alert message appears when attempting to insert more than one user-defined address.
To define an IPv6 Preferred Router:
1. Click System > IPv6 Default Gateway. The IPv6 Default Gateway Page opens.
Figure 11: IPv6 Default Gateway Page
The IPv6 Default Gateway Page contains the following fields:
• The radio button is selected to delete/add/modify an entry.
• Default Gateway IPv6 Address — Displays the Link Local IPv6 address of the default gateway.
• Interface — Specifies the outgoing IPv6 interface through which the default gateway can be reached.
• Type — Specifies the means by which the default gateway was configured. The possible field values are:
– Static — Indicates the default gateway is user-defined.