The following definitions are used in this discussion of IQE
PIC queue calculations:
CIR mode—A physical interface is in CIR mode when
one of more of its “children” (logical interfaces in this
case) have a guaranteed rate configured, but some logical interfaces
have a shaping rate configured.
Default mode—A physical interface is in default
mode if none of its “children” (logical interfaces in
this case) have a guaranteed rate or shaping rate configured.
Excess mode—A physical interface is in excess mode
when one of more of its “children” (logical interfaces
in this case) have an excess rate configured.
PIR mode—A physical interface is in PIR mode if
none of its “children” (logical interfaces in this case)
have a guaranteed rate configured, but some logical interfaces have
a shaping rate configured.
