KB.15.15

Example 5 Configuring an IPv6 address on a loopback interface

HP Switch(config)# interface loopback 1

HP Switch(lo-1)# IPv6 address 2001:db8::1

NOTE:

• You can configure a loopback interface only from the CLI; you cannot configure a loopback

interface from the Menu interface.

• IPv6 loopback interfaces share the same IPv6 address space with VLAN configurations. The

maximum number of IPv6 addresses supported on a switch is 2048, which includes all IPv6

addresses configured for both VLANs and loopback interfaces (except for the default loopback

IPv6 address, ::1 /128).

• Each IPv6 address that you configure on a loopback interface must be unique in the AS; see

“OSPFv3 Routing” (page 209). This means that the address cannot be used by a VLAN interface

or another loopback interface.

• You can configure up to 32 IPv6 and 32 IPv4 addresses on a loopback interface (lo0 to

lo7).

Displaying loopback interface configurations

Use show ipv6 to display the list of loopback interfaces configured with nondefault IPv6 addresses.

(Loopback interface 0, if configured only with the default ::1/128 IPv6 address, does not appear

in this listing.)

NOTE: A loopback interface does not appear in the show ipv6 command output unless it is

configured with a non-default IPv6 address.

Viewing the current IPv6 addressing configuration

Use these commands to view the current status of the IPv6 configuration on the switch.

Syntax:

show ipv6

Lists the current, global IPv6 settings and per-VLAN IPv6 addressing on the switch.

IPv6 Routing

For software releases K.13.01 through K.14.01, this setting is always

Disabled. This is a global setting and is not configured per-VLAN.

Default Gateway

Lists the IPv4 default gateway, if any, configured on the switch. This is a globally

configured router gateway address and is not configured per-VLAN.

ND DAD

Indicates whether DAD is enabled (the default) or disabled. Using ipv6 nd

dad-attempts 0 disables ND.

DAD Attempts

Indicates the number of neighbor solicitations the switch transmits per-address

for duplicate (IPv6) address detection. Implemented when a new address is

configured or when an interface with configured addresses comes up (such as

after a reboot).

Default: 3; Range: 0 – 255 ms. 0 disables duplicate address detection. See

“Duplicate address detection (DAD)” (page 31).

Viewing the current IPv6 addressing configuration 21