User's Manual

Horizon Management
63
Horizon Compact Release 1.01.01 Wireless Ethernet Product User Manual – Volume 1
12.7 Event and Performance Logs
The Horizon Compact system supports two logs, the Events Log and the Performance Log. Each can be
used to trace the behaviour of the system over time.
The Events Log is invoked or disabled by issuing the CLI command set logging [on/off]. This log records
alarm and reset events. Approximately 17,500 events can be captured by the Events log. Once the log is
full the oldest entries are overwritten. Use the CLI command get log entries and press Enter, to display
log entries. Use Ctrl C to abort the listing.
Issuing the CLI command set performance logging [on/off] enables or disables the Performance Log.
This log collects system performance information at time intervals that are configured using the CLI
command set performance log interval [hh:mm:ss].
Use the CLI command get performance log and press Enter, to display a list of Performance Log
entries. Use Ctrl C to abort the listing.
Between 6000 and 8000 entries can be logged before the Performance Log memory is full. Once the
memory is full, new entries will overwrite the oldest entries. The following table assumes that an average
of 7000 entries will occur before memory overflow. If the memory accepts more entries, then the log
duration before overflow will be extended.
12.8 Radio Loopback
Horizon provides a radio loopback facility for analysis of transmit or receive path issues. Invoking a radio
loopback is service affecting and will stop all data transfer. There are two options:
• Straight radio loopback - Ethernet traffic is not looped back to the network, Ethernet traffic is
discarded and the RF portion of the Horizon unit is placed in loopback (see Figure 12-2).
• Radio loopback plus network loopback – Ethernet traffic and the radio are placed in loopback
During the loopback, if the modem transmitter loss of sync alarm is not active, then both the transmitter
and receiver of the Horizon unit under test are functioning correctly. A user configurable time limit can be
applied to the loopback feature (default is 30 seconds). Once the time limit has expired the loopback will
be automatically removed. Note that the far end transmitter should be muted when analysing the near
end system using the radio loopback feature. The radio loopback is invoked or disabled by issuing the
CLI command set radio loopback [on/off] [time][network].
Figure 12-2 Radio Loopback
Network loopback Straight radio loopback
Logging Interval Log Duration
15 secs (minimum) ~ 29 hours
1 minute ~ 116 hours (~ 4.8 days)
15 minutes (default) ~ 73 days (~ 2.4 months)
1 hour ~ 292 days (~ 9.7 months)
24 hours (maximum) 7000 days (~ 19.2 years)