Administrator Guide

Debugging IPv6 RDNSS Information Sent to the
Host
To verify that the IPv6 RDNSS information sent to the host is configured correctly, use the debug ipv6 nd
command in EXEC Privilege mode.
Example of Debugging IPv6 RDNSS Information Sent to the Host
The following example debugs IPv6 RDNSS information sent to the host.
The last 3 lines indicate that the IPv6 RDNSS information was configured correctly.
dns-server=1000::0001, lifetime=1 sec
dns-server=3000::0001, lifetime=1 sec
dns-server=2000::0001, lifetime=0 sec
If the DNS server information is not displayed, verify that the IPv6 recursive DNS server configuration was
configured on the correct interface.
IPv6 Multicast
Dell Networking OS supports IPv6 multicast.
The Dell Networking OS supports the following protocols to implement IPv6 multicast routing:
• Multicast listener discovery protocol (MLD) — MLD on a multicast router sends out periodic general
MLD queries that the switch forwards through all ports in the VLAN. There are two versions of MLD: MLD
version 1 is based on version 2 of the Internet group management protocol (IGMP) for IPv4; MLD version
2 is based on version 3 of the IGMP for IPv4. IPv6 multicast for the Dell Networking OS supports versions
1 and 2.
• Protocol-independent multicast-sparse mode (PIM-SM) — PIM-SM is a multicast protocol in which
multicast receivers explicitly join to receive multicast traffic. The protocol uses a router as the root or
rendezvous point (RP) of the share tree distribution tree to distribute multicast traffic to a multicast
group. Messages to join the multicast group (Join messages) are sent towards the RP and data is sent
from senders to the RP so receivers can discover who are the senders and begin receiving traffic
destined to the multicast group.
For more information, refer to the Neighbor Discovery Protocol (NDP), Multicast IPv6, and Protocol
Independent Multicast (IPv6) chapters in the Dell Networking OS Command Line Interface Reference Guide.
Configuration Task List for IPv6
The following are configuration tasks for the IPv6 protocol.
• Adjusting Your CAM-Profile
• Assigning an IPv6 Address to an Interface
• Assigning a Static IPv6 Route
• Configuring Telnet with IPv6
IPv6 Routing 480