Dell PowerConnect M6220 Configuration Manual

Also see for PowerConnect M6220: Release notes Configuration guide Cli reference guide Configuration guide Release note

Contents

IPv6 1036IPv6This section includes the following subsections:• "Overview" on page 103• "Interface Configuration" on page 103• "DHCPv6" on page 106OverviewThere are many conceptual similarities between IPv4 and IPv6 network operation. Addresses stillhave a network prefix portion (subnet) and a device interface specific portion (host). While thelength of the network portion is still variable, most users have standardized on using a network prefixlength of 64 bits. This leaves 64 bits for the interface specific portion, called an Interface ID in IPv6.Depending upon the underlying link addressing, the Interface ID can be automatically computedfrom the link (e.g., MAC address). Such an automatically computed Interface ID is called an EUI64identifier.IPv6 packets on the network are of an entirely different format than traditional IPv4 packets and arealso encapsulated in a different EtherType (contained within the L2 header to indicate which L3protocol is used). In order to route these packets across L3 requires an infrastructure equivalent toand parallel to that provided for IPv4.NOTE: The PowerConnect 6200 Series switch also implements OSPFv3 for use with IPv6 networks. Theseconfiguration scenarios are included with the OSPFv2 scenarios in "OSPF" on page 67.Interface ConfigurationIn PowerConnect 6200 Series software, IPv6 coexists with IPv4. As with IPv4, IPv6 routing can beenabled on physical and VLAN interfaces. Each L3 routing interface can be used for IPv4, IPv6, orboth.Neighbor discovery is the IPv6 replacement for Address Resolution Protocol (ARP). Routeradvertisement is part of the neighbor discovery process and is required for IPv6. As part of routeradvertisement, PowerConnect 6200 Series software supports stateless auto configuration of endnodes. The switch supports both EUI-64 interface identifiers and manually configured interface IDs.