All IPv6 Enhanced Subscriber Management (ESM) services require either Routed CO (IES), or Routed CO for VPRN as a supporting service construct. Because of the complexities of the IPv6 link-model, there is currently no support for IPv6 ESM in a VPLS. There is also currently no support for IPv6 in combination with Basic Subscriber Management (BSM). This feature applies to the 7450 ESS and 7750 SR only.