The lineGroupTable contains descriptions of the redundancy relationship between lines. Each of the two lines are given a weight between 1 and 10 which is used to determine their role. Each line is referenced by an ID (ifIndex) used to access the ifEntry and lineProfile tables. The use of Primary/Secondary naming convention is arbitrary and specifying either does not guarantee any particular line having additional priority. The sole determination of which line is active is the weighting level, thus where if both are equal, which ever line becomes active remains active until an error condition occurs. Table entries are created only by the user when they add/make a line part of a redundancy group. Non- Redundancy configurations require one of the entries (primary or secondary) to be populated. It is possible to have a redundancy group entry with both fields not configured (0), however, the state must be Admin down for this group. Activation requests in this state will cause an error return.