User's Manual

Mobile WiMAX Outdoor RAS SPI-2210 System Description/Ed.05

Threshold Cross Alert (TCA) Control

The outdoor SPI-2210 defines under/over threshold for statistics. When a statistical value

collected at Bucket Interval (15, 30, and 60 minutes) is lower than the under threshold, it

generates an under TCA alarm. When the value is higher than the over threshold, it

generates an over TCA alarm. The alarms are reported to the WSM. TCA can enable or

disable details of each statistical group and set a threshold per severity.

IEEE 802.3ah

The outdoor SPI-2210 provides IEEE 802.3ah Ethernet OAM for a backhaul interface.

Although IEEE 802.3ah OAM pertains the PHY layer, it is located in the MAC layer so

that it can be applied to all IEEE 802.3 PHYs. It creates or processes 802.3ah OAM frames

according to the functions defined in the specification.

Ethernet OAM continuously monitors the connection between links at each end, and also

monitors discovery, remote loopback, and error packets which deliver important link events

such as Dying Gasp. It also includes a link monitoring function which delivers event

notification in the event of threshold errors, and a variable retrieval function for 802.3ah

standard MIB.

The outdoor SPI-2210 supports 802.3ah Ethernet OAM passive mode such as responding

to 802.3ah OAM which is triggered in external active mode entities and loopback mode

operation, and sending event notification.

Integrity Check

The outdoor SPI-2210 proactively checks whether system configuration or operation

information (PLD) is in compliance with operator commands during system loading or

operation, and also checks whether system settings are OK and there is no problem with

call processing. If the result is not OK, it sends an alarm to the operator. That is, it checks

whether system configuration meets the minimum configuration conditions for call

processing or whether all operation information consists of valid values within an

appropriate range. The result is reported to the operator to help with correction of errors.

OAM Traffic Throttling

The outdoor SPI-2210 provides a function that suppresses OAM related traffic which can

occur in the system depending on the operator command. The OAM related traffic includes

fault trap messages for alarm reports and statistics files that are created periodically.

In a fault trap, the operator can use an alarm inhibition command to suppress alarm

generation for all or some of system fault traps. This helps control alarm traffic.

In a statistics file, the operator can use commands for statistics collection configuration to

control the size of statistics file by disabling collection functions of each statistics group.