User's Manual

54 ALFOplus 24GHz (North America) - Release 01.05.0x - MN.00395.E - 004
• Utilization TX: The best estimate of the mean physical layer network utilization on this interface dur-
ing this sampling interval, in hundredths of a percent. The percentage is always referred to a 1Gbit/
s port speed. So, it represents the mean TX throughput measured on the port during the sampling
period and it is expressed as a percentage of a port speed.
All the counters described above are part of the RMON statistics and it is not possible to collect only a sub-
set of them. It is however possible to select on which equipment interface activate the RMON statistics (for
example, they can be enabled only on the radio interface). This allows reducing the total amount of PM
data, for example avoiding data collection from unused LAN interfaces. This can be done on all Payload
Interfaces (regardless if electrical or optical), the Radio interfaces are included as well.
7.9 ADVANCED STATISTIC MONITORING FOR SERVICES AND PRI-
ORITY COUNTERS
In addition to the Ethernet Counters per Port with SIAE equipment it is possible to set on the Radio interface
the RMON counters per Service (Vlan) or Priority (Queues). Differently from the previous RMON counters,
the Service and Priority counters can be activated for the following variables.
• Octets TX: Total number of octets of data (including those in bad packets) transmitted.
• Pkts TX: Total number of packets transmitted.
• Octets RX: Total number of octets of data (including those in bad packets) received by the interface.
• Pkts RX: Total number of packets (including bad packets, broadcast packets, and multicast packets)
received.
• DropEvents: Total number of events (frames) in which packets were dropped by the interface due
to lack of resources.
The Service and Priority RMON can be activated and collected from NMS (Network Management System).
The Service and Priority RMON are based on the Advanced Ethernet Counters present on the equipment
and configurable on site. This means that on site it is possible to activate the Advanced Ethernet Counters
but not the Service and Priority RMON.
In any case the NMS has higher priority in respect to the configuration inserted through Web LCT. This
means that the local operator can enable and read the active measure, but when the configuration of these
RMON is done through NMS, the local operator can only read the values of the Advanced Ethernet Counters.
It is not possible to enable the RMON for Priority and, in the same equipment, the RMON per Vlan.
7.9.1 Priority RMON
The Priority RMON are based on the internal Queue of the equipment, not on the value of the Priority; this
implies that:
• the maximum number of RMON (Priority) that can be enabled are limited to 8, i.e. the number of
the queues available in SIAE switch.
• if traffic with different priorities are listed in the same Queue, the Priority RMON will work with one
Probe on the Queue. I.e. the traffic in the same Queue is seen as “Same Priority Traffic” and the
Priority RMON counts the frames belonging to the Queue
In other words, with Priority RMON there is a probe for each queue (8 queues in SIAE switch). Each probe
counts the variables listed above (Octets TX, Pkts TX, Octets RX, Pkts RX and DropEvents).
These counters will be available only with the Minimum Polling Policy of 15 min.