PM7340 S/UNI-IMA-8
PRELIMINARY
INVERSE MULTIPLEXING OVER ATM
DATA SHEET
PMC-2001723
ISSUE 3
INVERSE MULTIPLEXING OVER ATM
Recovery (LASR) procedure. When the links change state, the RIPP also
coordinates the rate change between the round-robin procedures located in the
receive and transmit data paths and their respective rate schedulers.
Since failures are based upon the persistence of defects, the defects are
detected and passed as interrupts/status to the management plane. The plane
management is responsible for the integration of defects into failure conditions
and to set the failure conditions in the S/UNI-IMA-8.
Table 4 PM command description
Command
Description
Add_group
Starts up a group state machine and the link
state machines for the links configured in the
group. Group and links need to be configured
prior to issuing this command. As a result of this
command, the transmitter will start to send out
IMA frames on the links specified as part of the
group, and the receiver will start to look for and
analyze ICP cells received on the links within
the group. If a sufficient number of links are
detected to be active, the group will transition to
the operational state and start to transmit and
receive ATM traffic.
Delete_group
Remove an existing group and all its links
immediately. This command will take the group
state machine to the “not configured” state and
all of the links in the group to the “not in group”
state. The transmit links will cease to transmit
IMA frames and will commence to transmit
physical-layer idle cells until the links are
reused. For group deletion without any loss of
data, the links may be deleted or inhibited to
stop traffic on the group or the group may be
inhibited prior to deleting the group.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
70
PMC [ PMC-SIERRA, INC ]
