Each entry contains the attributes associated with
an active Phase-1 IKE Tunnel.
The rows in this table correspond 1-to-1 with a subset of
the rows in cisgIpsSgTunnelTable, specifically the subset
which represent Phase-1 IKE Tunnels.
Hence, the value of the index 'cisgIpsSgProtocol'
in this table is always 'cpIkev1' or 'cpIkev2'.
For all the counter objects in the table below, initially when
the Phase-1 IKE Tunnel becomes active and appears in this
table, they would contain a value of zero.