The value of sdpBindCpmProtPolicyId specifies the CPM protection policy
for this SDP binding.
Zero specifies that no CPM protection policy is associated with this
SDP binding. A non-zero value must be the index of an active
tmnxCpmProtPolTable row.
If the SDP binding can support Eth-CFM MEPs or MIPs, the default CPM
protection policy is 255 (which is the default CPU protection policy
for a network interface). Zero is not supported in this case.
If the SDP binding cannot support Eth-CFM MEPs or MIPs, the default CPM
protection policy is zero. Changing the CPM protection policy value
is not supported in this case.