The value of tmnxOamLspTrCtlAssocChannel specifies the launched echo
request's usage of the Associated Channel (ACH) mechanism, when testing
an MPLS-TP LSP.
When tmnxOamLspTrCtlTestSubMode is 'static(2)', the default value for
tmnxOamLspTrCtlAssocChannel is 'nonIp(2)'.
The supported object combinations for LSP trace route tests are listed
in the tmnxOamLspTrCtlTable DESCRIPTION clause.