VLAN Containment
Need to define range of VLAN tags which are unique to each pair of interconnecting IPPs
- jointly allocated/managed
Interconnection trunk ports are both in all these VLANs
Block all untagged/default traffic at interconnect
Only customers who are permitted access to other IPP will be members of VLANs which cross interconnect
non-Unicast traffic constrained to VLANs