| Description | The mplsTunnelARHopTable is used to indicate the
hops for an MPLS tunnel defined in mplsTunnelTable,
as reported by the MPLS 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 mplsTunnelHopTable or the
mplsTunnelCHopTable.
Each row in this table is indexed by
mplsTunnelARHopListIndex. Each row also has a
secondary index mplsTunnelARHopIndex, 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 MPLS signalling protocols, implementation of
this table is optional. Furthermore, since the
information in this table is actually provided by
the MPLS 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 contents 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 mplsTunnelLastPathChange object. |
| Description | The mplsTunnelARHopTable is used to indicate the
hops for an MPLS tunnel defined in mplsTunnelTable,
as reported by the MPLS 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 mplsTunnelHopTable or the
mplsTunnelCHopTable.
Each row in this table is indexed by
mplsTunnelARHopListIndex. Each row also has a
secondary index mplsTunnelARHopIndex, 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 MPLS signalling protocols, implementation of
this table is optional. Furthermore, since the
information in this table is actually provided by
the MPLS 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 contents 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 mplsTunnelLastPathChange object. |