ZXEPON-SERVICE-MIB Table View

A Table of dot3 Multi-Point Control Protocol 
(MPCP) MIB objects. The entries in the table
are control and status objects of the MPCP. 
Each object has a row for every virtual link 
denoted by the corresponding ifIndex. The LLID 
field, as defined in the [802.3ah] is a 2bytes
register (15bits field and a broadcast bit) 
limiting the number of virtual links to 32768. 
Typically the number of expected virtual links 
in a PON is like the number of ONUs, which is 
32-64, plus an additional entry for broadcast 
LLID (with a value of 0xffff).

This table defines the list of statistics counters of an interface 
implementing the [802.3ah] clause 64 MPCP. Each object has a row 
for every virtual link denoted by the corresponding ifIndex. The 
LLID field, as defined in the [802.3ah] is a 2bytes register 
(15bits field and a broadcast bit) limiting the number of virtual 
links to 32768. Typically the number of expected virtual links in 
a PON is like the number of ONUs, which is 32-64, plus an additional 
entry for broadcast LLID (with a value of 0xffff).

A table of dot3 OmpEmulation MIB objects. The table contain 
objects for the management of the OMPEmulation sublayer. Each 
object has a row for every virtual link denoted by the corresponding 
ifIndex. The LLID field, as defined in the [802.3ah] is a 2bytes 
register (15bits field and a broadcast bit) limiting the number 
of virtual links to 32768. Typically the number of expected 
virtual links in a PON is like the number of ONUs, which 
is 32-64, plus an additional entry for broadcast LLID 
(with a value of 0xffff).

This table defines the list of statistics counters of [802.3ah] 
clause 65 OMPEmulation sublayer. Each object has a row for every 
virtual link denoted by the corresponding ifIndex. The LLID field, 
as defined in the [802.3ah] is a 2bytes register (15bits field and 
a broadcast bit) limiting the number of virtual links to 32768. 
Typically the number of expected virtual links in a PON is like 
the number of ONUs, which is 32-64, plus an additional entry for 
broadcast LLID (with a value of 0xffff).

A table of dot3 EPON FEC management objects. The entries in the 
table are control and status objects and statistic counters for 
the FEC layer. Each object has a row for every virtual link denoted 
by the corresponding ifIndex. The LLID field, as defined in the 
[802.3ah] is a 2bytes register (15bits field and a broadcast bit) 
limiting the number of virtual links to 32768. Typically the number 
of expected virtual links in a PON is like the number of ONUs, which 
is 32-64, plus an additional entry for broadcast LLID (with a value 
of 0xffff).

A table of dot3 EPON FEC management objects. The entries in the 
table are control and status objects and statistic counters for 
the FEC layer. Each object has a row for every virtual link denoted 
by the corresponding ifIndex. The LLID field, as defined in the 
[802.3ah] is a 2bytes register (15bits field and a broadcast bit) 
limiting the number of virtual links to 32768. Typically the number 
of expected virtual links in a PON is like the number of ONUs, which 
is 32-64, plus an additional entry for broadcast LLID (with a value 
of 0xffff).

A table of the extended package objects for queue management. 
The [802.3ah] MPCP defines a report message of the occupancy 
of the transmit queues for the feedback BW request from the ONUs. 
These queues serve the uplink transmission of the ONU and data 
is gathered there until the ONU is granted for transmission. The 
management table of the queues is added here mainly to control 
the reporting and to gather some statistics of their operation. 
This table is not duplicating existing management objects of 
bridging queues, specified in [802.1d], since the existence of 
a dedicated transmit queuing mechanism is implied in the [802.3ah] 
and the ONU may be a device which is not a bridge, with embedded 
bridging queues. The format of the REPORT message, The 'Queue report' 
field reports the occupancy of each uplink transmission queue. The 
number of queue sets defines the number of the reported sets, as 
would be explained in the description of the ExtPkgQueueSetsTable 
table. For each set the report bitmap defines which queue is present 
in the report, meaning that although the MPCP REPORT message can report 
of up to 8 queues in a REPORT message, the actual number is flexible. 
The Queue table has a variable size which is limited by the 
ExtPkgObjectReportMaximumNumQueues object as an ONU can have fewer 
queues to report. The entries in the table are control and status 
indication objects for managing the queues of an EPON interface which 
are gathered in an extended package as an addition to the objects which 
are based on the [802.3ah] attributes. Each object has a row for every 
virtual link and for every queue in the report. The LLID field, as 
defined in the [802.3ah] is a 2bytes register (15bits field and a broadcast 
bit) limiting the number of virtual links to 32768. Typically the number 
of expected virtual links in a PON is like the number of ONUs, which is 
32-64, plus an additional entry for broadcast LLID (with a value of 0xffff). 
The number of queues is between 0 and 7 and limited by 
ExtPkgObjectReportMaximumNumQueues.

A table of Extended package objects used for the management of the queue_sets. 
Entries are control and status indication objects of an EPON interface which 
are gathered in an extended package as an addition to the objects based on 
the [802.3ah] attributes. The objects in this table are specific for the 
queue_sets which are reported in the MPCP REPORT message as defined in 
[802.3ah] clause 64. The [802.3ah] MPCP defines a report message of the 
occupancy of the transmit queues for the feedback BW request from the ONUs. 
These queues serve the uplink transmission of the ONU and data is gathered 
there until the ONU is granted for transmission. The management table of 
the queues_sets is added here mainly to control the reporting and to gather 
some statistics of their operation. This table is not duplicating existing 
management objects of bridging queues, specified in [802.1d], since the 
existence of a dedicated transmit queuing mechanism is implied in the 
[802.3ah] and the ONU may be a device which is not a bridge, with embedded 
bridging queues. As can be seen from the message format, the ONU interface 
reports of the status of up to 8 queues and it can report in a single MPCP 
REPORT message of a few sets of queues. The number of queue_sets defines 
the number of the reported sets, and it can reach up to a value of 8. It 
means that a ONU can hold a variable number of sets between 0 to 7. The 
dot3ExtPkgQueueSetsTable table has a variable queue_set size which is 
limited by the dot3ExtPkgObjectReportMaximumNumThreshold object as an ONU 
can have fewer queue_sets to report. The 'Queue report' field reports the 
occupancy of each uplink transmission queue. The queue_sets can be used to 
report the occupancy of the queues in a few levels as to allow granting, 
in an accurate manner, of only part of the data available in the queues. 
A Threshold is defined for each queue_set to define the level of the queue 
which is counted for the report of the occupancy. The threshold is reflected 
in the queue_set table by the dot3ExtPkgObjectReportThreshold object. For 
each queue set, the report bitmap defines which queues are present in the 
report, meaning that although the MPCP REPORT message can report of up to 
8 queues in a REPORT message, the actual number is flexible. The 
dot3ExtPkgQueueSetsTable table has a variable queue size which is limited 
by the dot3ExtPkgObjectReportMaximumNumQueues object as an ONU can have 
fewer queues to report. Each object has a row for every virtual link, for 
each queue in the report and for each queue_set in the queue. The LLID 
field, as defined in the [802.3ah] is a 2bytes register (15bits field and 
a broadcast bit) limiting the number of virtual links to 32768. Typically 
the number of expected virtual links in a PON is like the number of ONUs, 
which is 32-64, plus an additional entry for broadcast LLID (with a value 
of 0xffff). The number of queues is between 0 and 7 and limited by 
dot3ExtPkgObjectReportMaximumNumQueues. The number of queues_sets is 
between 0 and 7 and limited by dot3ExtPkgObjectReportMaximumNumThreshold.

This table defines the control and status indication objects 
for the optical interface of the EPON interface. Each object has 
a row for every virtual link denoted by the corresponding ifIndex. 
The LLID field, as defined in the [802.3ah] is a 2bytes register 
(15bits field and a broadcast bit) limiting the number of virtual 
links to 32768. Typically the number of expected virtual links in a 
PON is like the number of ONUs, which is 32-64, plus an additional 
entry for broadcast LLID (with a value of 0xffff). Although the optical 
interface is a physical interface, there is a row in the table for each 
virtual interface. The reason for having a separate row for each virtual 
link is that the OLT has a separate link for each one of the ONUs. For 
instance, ONUs could be in different distances with different link budgets 
and different receive powers, therefore having different power alarms. 
It is quite similar to a case of different physical interfaces.