LevelOne GTL-2691 - Manual (Page 580)

C HAPTER 16 | IP Configuration
Setting the Switch’s IP Address (IP Version 6)
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◆ "DHCP Client" on page 1361
C OMMAND U SAGE
◆ The switch must be configured with a link-local address. The option to
explicitly enable IPv6 creates a link-local address, but will not generate
a global IPv6 address. The global unicast address must be manually
configured (see "Configuring an IPv6 Address" on page 582 ).
◆ IPv6 Neighbor Discovery Protocol supersedes IPv4 Address Resolution
Protocol in IPv6 networks. IPv6 nodes on the same network segment
use Neighbor Discovery to discover each other's presence, to determine
each other's link-layer addresses, to find routers and to maintain
reachability information about the paths to active neighbors. The key
parameters used to facilitate this process are the number of attempts
made to verify whether or not a duplicate address exists on the same
network segment, and the interval between neighbor solicitations used
to verify reachability information.
P ARAMETERS
These parameters are displayed:
◆ VLAN – ID of a configured VLAN which is to be used for management
access, or as a standard interface for a subnet. By default, all ports on
the switch are members of VLAN 1. However, the management station
can be attached to a port belonging to any VLAN, as long as that VLAN
has been assigned an IP address. (Range: 1-4093)
◆ Enable IPv6 Explicitly – Enables IPv6 on an interface. Note that
when an explicit address is assigned to an interface, IPv6 is
automatically enabled, and cannot be disabled until all assigned
addresses have been removed. (Default: Disabled)
Disabling this parameter does not disable IPv6 for an interface that has
been explicitly configured with an IPv6 address.
◆ MTU – Sets the size of the maximum transmission unit (MTU) for IPv6
packets sent on an interface. (Range: 1280-65535 bytes;
Default: 1500 bytes)
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The maximum value set by this command cannot exceed the MTU of
the physical interface, which is currently fixed at 1500 bytes.
■
If a non-default value is configured, an MTU option is included in the
router advertisements sent from this device. This option is provided
to ensure that all nodes on a link use the same MTU value in cases
where the link MTU is not otherwise well known.
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IPv6 routers do not fragment IPv6 packets forwarded from other
routers. However, traffic originating from an end-station connected
to an IPv6 router may be fragmented.
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All devices on the same physical medium must use the same MTU in
order to operate correctly.
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IPv6 must be enabled on an interface before the MTU can be set. If
an IPv6 address has not been assigned to the switch, “N/A” is
displayed in the MTU field.