S/UNI®-ATLAS-3200 Telecom Standard Product Data Sheet
Preliminary
Table 18 Policing Actions
Action1[1:0]
and
Definition
Action2[1:0]
00
01
10
11
Set the Police status bit, but take no other action than to increment the
appropriate non-compliant cell counts.
Reduce the priority of high priority cells (i.e. tag CLP=0 cells. Increment
the appropriate non-compliant cell counts.
Reduce the priority of high priority cells and discard the low priority cells.
Increment the appropriate non-compliant cell counts.
Discard all non-conforming cells. Increment the appropriate non-
compliant cell counts.
Policing can be effectively disabled for a connection if the increment fields (I1 and I2) are set to
all zeros.
The Conditional Conformance Update (COCUP) bit is used to introduce a coupling between the
two GCRAs.
If COCUP=0, then GCRA1 and GCRA2 are completely independent of each other and the
updating of the TAT1 and TAT2 fields are independent. If the cell is conforming to a GCRA, the
TAT field for that GCRA will be updated. The table below describes the behavior of the ATLAS:
Table 19 Actions on Policing with COCUP=0
GCRA1
GCRA2
Pass
Fail
No Action
Update TAT1
Tag
Discard
Pass
Fail
Update TAT1
Update TAT2
Update TAT2
Update TAT2
Update TAT2
Update TAT1
Update TAT1
No Action
Tag
Discard
No Update
No Update
No Update
No Update
No Update
No Update
No Update
No Update
No Update
If COCUP=1, then GCRA1 and GCRA2 are coupled and the updating of the TAT1 and TAT2
fields are conditional. The S/UNI-ATLAS-3200 reacts as described in the table below.
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-1990553, Issue 4
96
PMC [ PMC-SIERRA, INC ]
