The GmplsTunnelARHopTable is used to indicate the hops for an Gmpls tunnel defined in GmplsTunnelTable, as reported by the Gmpls signalling protocol. Thus at a transit LSR, this table (if the table is supported and if the signaling protocol is recording actual route information) contains the actual route of the whole tunnel. If the signaling protocol is not recording the actual route, this table MAY report the information from the GmplsTunnelHopTable or the GmplsTunnelCHopTable. Each row in this table is indexed by GmplsTunnelARHopListIndex. Each row also has a secondary index GmplsTunnelARHopIndex, corresponding to the next hop that this row corresponds to. Please note that since the information necessary to build entries within this table is not provided by some Gmpls signalling protocols, implementation of this table is optional. Furthermore, since the information in this table is actually provided by the Gmpls signalling protocol after the path has been set-up, the entries in this table are provided only for observation, and hence, all variables in this table are accessible exclusively as read- only. Note also that the contencts of this table may change while it is being read because of re-routing activities. A network administrator may verify that the actual route read is consistent by reference to the GmplsTunnelLastPathChange object.