Specifies trace messages to check for connectivity
between the router and the SONET/SDH device at the other end of the
line. The no version restores the default
situation, in which all characters of the trace message are zeros.
Options
pathChannel—Number, in the
range 1–2147483648, that identifies the path on a channelized
interface
msg—Specifies that the message is one that the router
sends
exp-msg—Specifies that the message is one that the
router expects to receive
message—Text of the message;
the maximum is 15 characters for SDH mode and 62 characters for SONET
mode
