S/UNI-IMA-4 Telecom Standard Product Data Sheet
Released
Note that, in order to support a desired maximum expected network differential delay, the
RX_DELAY_TOL parameter must meet the following requirement:
RX_DELAY_TOL > Max_network_diff_dly + RX_DELAY_GUARDBAND + Min_upper_guardband + Min_lower_guardband
TX LID to Link Mapping Table:
o
Select the LIDs to be used by the TX Links and program the physical links into the
appropriate Group Tag/LID locations.
TIMA Group Configuration Record:
o
o
o
o
TX VPHY ID.
Stuff Advertise Mode.
Actual stuffing mode(ITC/CTC) used.
Transmitted OAM label.
RDAT IMA Group Context Record
RX VPHY ID.
o
Also, while configuring a group, the context records that contain statistics should be initialized.
The following records should be initialized to zero:
o
o
o
RIPP group Context Record.
RDAT IMA Group Statistics Record.
TIMA Group Context Record.
Configuring a Link for IMA
All link-based records are indexed by the physical link ID.
Prior to configuring a link, the user should check to ensure that it is not in use already. This is
necessary since link deletion from a group may take some time due to the necessity of allowing
the DCB buffer for the link to drain. Reading the RX_ENABLE bit in the RIPP RX Link
context record and the TX_ENABLE bit in the RIPP TX Link Context record can check this.
The following fields in the following records need to be programmed; other fields in the records
should be cleared to zero.
RIPP TX Link Configuration Record
o
o
o
TX_LID.
Group Tag.
per link Interrupt enables.
RIPP RX Link Configuration Record
o
o
Group Tag.
per link Interrupt Enables.
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2020889, Issue 2
276
PMC [ PMC-SIERRA, INC ]
