User Manual

MDR2400/5800-SR, Orion2410/5810-SRi and Orion 5825-SR
862-01881 Issue 12c Page 127
The MIB element controlling the switch-over threshold, mdrmteSevereErrorMargin
(OID: 1.3.6.1.4.1.1316.1.1.1.2.2.18, Parent: mdrmteRFLinkConf), is set to 30% by
default. This value is a percentage and represents the switch-over threshold for the
Packet Error Ratio (PER). When the PER exceeds 30%, the switch-over will occur.
The value of this MIB element can be adjusted to meet the exact user requirements. It
is advisable to set the switch-over threshold on all Digital Indoor Units to the same
value.
J.5 System Verification
Since most of the functionality of the protected system is hidden from the user, it may
be difficult to monitor the status at times. It can however be determined by monitoring
the MIB elements listed below.
The status of the protected link can also be monitored through the Orion NMS. Please
refer to the Orion NMS user manual for more information on this option.
• Name: mdrmteOnePlusOne – shows if the protected mode is active (OID:
1.3.6.1.4.1.1316.1.1.1.2.4.17, Parent: mdrmteGeneral)
• Name: mdrmtePayloadDrive – shows if the Digital Indoor Unit is driving the
tributary channels of the user network (OID: 1.3.6.1.4.1.1316.1.1.1.3.1.5,
Parent: mdrmteInfo)
• Name: mdrmteLock – shows if frame lock is present (OID:
1.3.6.1.4.1.1316.1.1.1.3.1.6, Parent: mdrmteInfo)
• Name: mdrmtePeerPayloadDrive – shows if the Auxiliary port connected Digital
Indoor Unit (Peer) is driving the tributary channels. This element is the inverse
(opposite) of mdrmtePayloadDrive (OID: 1.3.6.1.4.1.1316.1.1.1.3.1.7, Parent:
mdrmteInfo)
• Name: mdrmtePeerLock - shows if the Auxiliary port connected Digital Indoor
Unit (Peer) has frame lock (OID: 1.3.6.1.4.1.1316.1.1.1.3.1.8, Parent:
mdrmteInfo)
• Name: mdrmteSevereErrorMargin – the threshold percentage value for link
unavailable to switch over (OID: 1.3.6.1.4.1.1316.1.1.1.2.2.18, Parent:
mdrmteRFLinkConf)
• Name: mdrmteAveragePER – average Packet Error Ratio (OID:
1.3.6.1.4.1.1316.1.1.1.1.2.15, Parent: mdrmteRFLinkPerf)
• Name: mdrmteCurrentPER – real time Packet Error Ratio. For example a PER
of 1e-1 (10%) corresponds to a SevereErrorMargin value of 10. The Current
PER has to exceed the Severe Error Margin for 10 seconds continuously for the
link to become unavailable and switch over to its peer Digital Indoor Unit. (OID:
1.3.6.1.4.1.1316.1.1.1.1.2.3, Parent: mdrmteRFLinkPerf)