This table always has 64 entries, one for each DSCP value. The
table contains three mappings from the DSCP value assigned to
a packet. One mapping is to the egress CoS to be stored in the
layer-2 frame headers for output on 802.1Q or ISL interfaces.
The other two mappings are to the remarked (or 'marked down')
DSCP values which are used when a policer's requires that
a packet's DSCP value to be modified. Of these two mappings,
one is for a Normal Rate policer, and the other is for an
Excess Rate policer. These mappings apply for every port on the
device.