Operation Manual

4 Operation
4-20 FrameSaver NP 110 User’s Manual - Installation Guide 980-001-0240B
November
2000
4. Desired Loss Mon Rate - Setting for the rate at which a Loss measurement
packet (Packet-Counting packet) is injected on each PVC in the list specified at
the bottom of this screen. Default value (60) dictates that within each 60-second
period, every PVC in the list is measured once. A PVC’s packet is considered lost
if it does not return before a subsequent packet is injected on that PVC. On a per-
PVC basis, the originating unit delays 10 seconds if the previous response was
lost. The packet send rate cannot exceed 10 per second.
NOTE: FrameSaver NP 110 Loss packets are 42 bytes in length, when issued. A
FrameSaver NP looping (receiving and returning) a Loss packet will add two
additional bytes to the packet.
5. Drpd Mon Pkt Thres - FrameSaver NP 110 maintains a count of monitor
packets lost (both Delay and Loss packets) for the current interval for each PVC.
When either of the monitor packet counts on any PVC equals or exceeds this
threshold setting, a “PVC Drpd Mon Alarm” is declared. The alarm is cleared
when all PVCs in a subsequent interval fail to equal or exceed the threshold
value. Applies to auto and manually learned DLCIs.
6. PVC Delay Thres - FrameSaver NP 110 maintains an average delay
measurement for each PVC for the current interval. A “PVC Delay Alarm” is
declared when the average on any PVC equals or exceeds this setting. The alarm
is cleared when all PVCs in a subsequent interval fail to equal or exceed the
threshold value. Applies to auto and manually learned DLCIs.
7. PVC Dlvd Pkt Thres - A “PVC Dlvd Pkt Alarm” is declared when the
percentage of packets delivered on any monitored PVC falls below this threshold
setting. The alarm is cleared when all PVCs in a subsequent interval fail to fall
below the threshold value. Applies to auto and manually learned DLCIs.
8. Interval Period - Sets the time period for each interval of PVC statistics,
from one (1) to 15 minutes.
NOTE: Changing the interval period will cause all PVC and Protocol Monitoring
statistics to be cleared.
9. “LMI” CIR Values - Selecting “Use,” sets (automatically) the CIR value of each
PVC to the value reported by the Frame Switch LMI message.
NOTE: This feature operates only with “LMI” LMI Protocol selected.
10. CIR Bins - Sets the upper value (in %) for each of the six “bins” in which CIR
data will be collected. All six values must be entered with each setting.