The value of tmnxOamVccvTrCtlTaiiPrefix specifies the prefix of the
Target Attachment Individual Identifier (TAII) to be used when testing
a FEC 129 AII Type 2 pseudowire.
At most one of tmnxOamVccvTrCtlSdpIdVcId and
tmnxOamVccvTrCtlTaiiPrefix can be set to a non-default value on a
particular row.
A value of zero indicates that no prefix has been configured.