DHCP Unique Identifier Content

A DHCP unique identifier (DUID) consists of a two-octet type code followed by a variable number of octets that make up the actual identifier. A DUID can be no more than 128 octets long (not including the type code). The following types are currently defined:
  • Link-layer address plus time
  • Vendor-assigned unique ID based on Enterprise Number
  • Link-layer address

ExtremeXOS uses Link-layer address plus time as its default client DUID. To configure DHCPv6 client identifier type for the client use:

configure dhcp ipv6 client identifier-type [ link-layer | link-layer-plus-time | vendor-specific ]