User's Manual Part 2

11: Monitoring the Network
APCD-LM043-8.0 (DRAFT C) 175
• provide accumulated octet/packet counts for each registered EUM. The Rx- and Tx-
directions are from the perspective of the CCU. In other words, Rx-Octets and Rx-
Packets refers to data received by the CCU from the EUM; Tx-Octets and Tx-Packets
refers to data transmitted from the CCU to the EUM,
• may be cleared by CCU reset or using the
air flush command,
• sorts entries by EUM IDs, and
• if RADIUS accounting is enabled, the CCU RADIUS client—periodically and on
special events—sends RADIUS accounting packets to a RADIUS server for each
EUM authorized through RADIUS. (For example, this event occurs when an EUM is
removed from the registration table.)
11.9 CCU Radio Meter
The CCU radio meter is a very useful CLI tool for determining the system load. In addition, it
assists in monitoring grade of service violations. The radio meter displays the running average
of per second traffic and polling statistics for each grade of service.
The CCU radio meter
• displays only the active grade of service levels since last CCU reset (for example, if
the CCU has Silver and BE grades of service, the radio meter displays entries only for
Silver Active/Inactive and BE Active/Inactive),
• can specify the interval (in seconds) over which the average is made,
• can generate graphs of Rx/Tx packets for the CCU channel,
• provides broadcast rates for both forward traffic (such as CCU to EUM Tx traffic) and
reverse traffic.
Keep the following points in mind when using the CCU radio meter:
• The Tx broadcasts should not exceed 10% of the total Tx traffic.
• The reverse packet rate should be less than 15% of the total poll rate for the
broadcast traffic.
• The Max IPS Violation monitoring indicates the number of “missed polls” within the
inter-poll space defined by the EUM's grade of service.
• The Ideal IPS Violation indicates “below GOS” EUMs (in other words, the number of
times a particular grade of service has not been achieved).