S/UNI-IMA-4 Telecom Standard Product Data Sheet
Released
RDAT Link Statistics Memory (MEM_SELECT=0)
Purpose: Stores cell and event counts for each Physical Link.
Usage: TC Links and links in IMA Groups. Each word contains two counts for IMA links, one
count for TC Links. In IMA mode, each cell may cause the oif_anomalies count to be
incremented, and also may cause one and only one of the other counters to be incremented. In
TC mode, each cell will cause one and only one counter to be incremented. All counters roll
over unless otherwise noted.
Maintained by: RDAT.
Record Size: Four 32-bit words.
MEM_ADDR = (Physical Link Number X 4) + Word Offset
Table 21 RDAT Link Statistics Record (IMA)
Word
0
Bits
31:16
Parameter
stuff_events
Description
Count of the number of stuff events received on
this link.
15:0
oif_anomalies
icp_violations
Count of the number of times this link has
transitioned from the IMA Sync state to the IMA
Hunt state in the IFSM.
Count of HEC errored, OCD errored, CRC-10
errored, invalid, or missing ICP cells received on
this link. This also includes valid ICP cells
received at unexpected positions. For stuff events,
this statistic may only be counted for the first cell in
the event. This counter will not increment prior to
link validation.
1
31:16
15:0
icp_cells
Count of the number of valid, non-errored ICP cells
received on this link. For stuff events, this statistic
may only be counted for the first cell in the event.
2
3
31:16
filler_cells
Count of the number of non-errored filler cells
received on this link that have been written to the
buffer.
15:0
user_cells
Count of the number of user cells received on this
link that have been written to the buffer.
31:16
filtered_cells
Count of the non-filler, non-idle cells which were
not written to the delay compensation buffer while
in IMA Startup or IMA Monitor, or cells received
with HEC or OCD indications, or CRC-10 errored
IMA OAM cells, or cells received while overrun,
underrun, LCD, LIF, or OIF conditions exist..
15:0
dropped_cells
Count of the number of idle cells received on this
link while not Disabled. All idle cells are counted
here, regardless of whether they have been
dropped (despite the name of this counter).
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2020889, Issue 2
214
PMC [ PMC-SIERRA, INC ]
