[Output Only] Port pair VLAN constraints, which can take one of the
following values: PORT_PAIR_UNCONSTRAINED_VLAN,
PORT_PAIR_MATCHING_VLAN
Values:
UNDEFINED_PORT_PAIR_VLAN (0):
A value indicating that the enum field is not
set.
PORT_PAIR_MATCHING_VLAN (250295358):
If PORT_PAIR_MATCHING_VLAN, the Interconnect for this
attachment is part of a pair of ports that should have
matching VLAN allocations. This occurs with Cross-Cloud
Interconnect to Azure remote locations. While GCP's API does
not explicitly group pairs of ports, the UI uses this field
to ensure matching VLAN ids when configuring a redundant
VLAN pair.
PORT_PAIR_UNCONSTRAINED_VLAN (175227948):
PORT_PAIR_UNCONSTRAINED_VLAN means there is no constraint.
