Description: This module defines a MIB for Network Level Service Advisor (NSLA)
wich provides a way of filtering and logic processing the result of
Network Service Monitor (NSM) operations and Level Indicator updates
and generates a boolean result to be used in several router modules:
MIB for management of Teldat feature Network Level Service Advisor.

The table structure overview is as follows (t: indicates a table,
at: indicates an augmented table, and it: indicates table with the same
indices/control as parent table):

NSLA MIB
|t++ Filter  Table
|t++ Advisor Table
|t++ Alarm   Table
|+++ NSLA Enabled
|+++ NSLA Muted