Users Guide

209 | IPv6 Support Dell Networking W-Series ArubaOS 6.4.x| User Guide
l The advertised IPv6 prefix length must be 64 bits for the stateless address autoconfiguration to be operational.
l You can configure up to three IPv6 prefixes per VLAN interface.
l Each IPv6 prefix must have an on-link interface address configured on the VLAN.
l Ensure you configure the upstream routers to route the packets back to Dell controller.
You can use the WebUI or CLI to configure the IPv6 RA on a VLAN.
Using WebUI
1. Navigate to the Configuration > Network > IP page and select the IP Interfaces tab.
2. Edit a VLAN # and select IP version as IPv6.
3. To configure an IPv6 global unicast address, follow the steps below:
a. Under Details, enter the IPv6 address and the prefix-length in the IP Address/Prefix-length field.
b. (Optional) Select the EUI64 Format check box, if applicable.
c. Click Add to add the address to the global address list.
4. To enable an IPv6 RA on a VLAN, select the Enable Router Advertisements (RA) check box under
Neighbor Discovery.
5. To configure an IPv6 RA prefix for a VLAN, follow the steps below:
a. Under Neighbor Discovery, enter an IPv6 prefix in the IPv6 RA Prefix field.
b. Click Add to configure an IPv6 prefix for the VLAN.
You can add up to three IPv6 prefixes per VLAN interface.
6. Click Apply.
Using CLI
Execute the following commands to configure router advertisements on a VLAN:
(host)(config) #interface vlan <vlanid>
(host)(config-subif)#ipv6 address <prefix>/<prefix-length>
(host)(config-subif)#ipv6 nd ra enable
(host)(config-subif)#ipv6 nd ra prefix X:X:X:X::X/64
Configuring Optional Parameters for RAs
In addition to enabling the RA functionality, you can configure the following IPv6 neighbor discovery and RA
options on a VLAN:
l Neighbor discovery reachable time – the time, in milliseconds, that a node assumes a neighbor is reachable
after receiving a reachability confirmation.
l Neighbor discovery retransmit time – the time, in milliseconds, between retransmitted Neighbor Solicitation
messages.
l RA DNS – the IPv6 recursive DNS Server for the VLAN.
l On Linux systems, clients must run the open rdnssd daemon to support the DNS server option.
l Windows 7 does not support the DNS server option.
l RA hop-limit – the IPv6 RA hop-limit value. It is the default value to be placed in the Hop Count field of the
IP header for outgoing (unicast) IP packets.
l RA interval – the maximum and minimum time interval between sending unsolicited multicast router
advertisements from the interface, in seconds.