KB.15.15

ipv6 helper-address unicast 2001:db8:0:12::11

exit

vlan 14

ipv6 address fe80::1 link-local

ipv6 address 2001:db8:0:14::1

exit

dhcpv6-relay

Non-Default Hop-Limit Configured

IPv6 Unicast Routing Enabled

DHCPv6 Helper Address Configured Per-VLAN

DHCPv6-Relay Globally Enabled

Use the show dhcpv6-relay command to display statistical information about DHCPv6 relay.

Example 127 DHCPv6 relay information

HP Switch(config)# show dhcpv6-relay

DHCPV6 Relay Agent : Enabled

Client Requests Server Responses

VLAN Name Received Dropped Failed Received Dropped Failed

--------- -------- ------- ------ -------- ------- ------

DEFAULT.. 120 0 0 120 0 0

VLAN20 30 1 0 29 2 1

DHCPv6-relay operating notes

• A DHCPv6-relay message sent to any multicast address carries a hop limit of 32. The hop

limit for DHCPv6 requests sent to a unicast address is determined by the ipv6 hop-limit

1 - 255 command at the global configuration level; Default: 64, see “Configuring global

IPv6 routing parameters” (page 176).

• Multicast addresses reserved for DHCPv6 include the following:

FF02::1:2—All_DHCP_Relay_Agents_and_Servers•

• FF05::1:3—All_DHCP_Servers

• DHCPv6 client and relay functions are mutually exclusive on a VLAN. Attempting to configure

one of these functions on a VLAN while the other is already configured results in one of the

following messages:

• Cannot configure an IPv6 helper-address as DHCPv6 client is

enabled on the VLAN

• Cannot enable DHCPv6 client as an IPv6 helper-address is

configured on the VLAN.

Configuring DHCPv6-relay 205