Remote Monitoring - Cisco ONS 15454 DWDM Reference Manual

18.11 Remote Monitoring

18.11 Remote Monitoring
The ONS 15454 incorporates RMON to allow network operators to monitor Ethernet card performance
and events. The RMON thresholds are user-provisionable in CTC. Refer to the Cisco ONS 15454
DWDM Procedure Guide for instructions.
Typical RMON operations, other than threshold provisioning, are invisible to the CTC user.
Note
ONS 15454 system RMON is based on the IETF-standard MIB RFC 2819 and includes the following
five groups from the standard MIB: Ethernet Statistics, History Control, Ethernet History, Alarm, and
Event.
18.11.1 64-Bit RMON Monitoring over DCC
The ONS 15454 DCC is implemented over the IP protocol, which is not compatible with Ethernet. The
system builds Ethernet equipment History and Statistics tables using HDLC statistics that are gathered
over the DCC (running point-topoint protocol, or PPP). RMON DCC monitoring (for both IP and
Ethernet) monitors the health of remote DCC connections.
RMON DCC contains two MIBs for DCC interfaces. They are:
•
•
18.11.1.1 Row Creation in MediaIndependentTable
The SetRequest PDU for creating a row in the mediaIndependentTable should contain all the values
required to activate a row in a single set operation along with an assignment of the status variable to
createRequest (2). The SetRequest PDU for entry creation must have all the object IDs (OIDs) carrying
an instance value of 0. That is, all the OIDs should be of the type OID.0.
In order to create a row, the SetRequest PDU should contain the following:
•
•
•
The mediaIndependentTable creates a row if the SetRequest PDU is valid according to the above rules.
When the row is created, the SNMP agent decides the value of mediaIndependentIndex. This value is
not sequentially allotted or contiguously numbered. It changes when an Ethernet interface is added or
deleted. The newly created row will have mediaIndependentTable value of valid (1). If the row already
exists, or if the SetRequest PDU values are insufficient or do not make sense, the SNMP agent returns
an error code.
mediaIndependentTable entries are not preserved if the SNMP agent is restarted.
Note
Cisco ONS 15454 DWDM Reference Manual, R8.5
18-20
cMediaIndependentTable—standard, rfc3273; the proprietary extension of the HC-RMON MIB
used for reporting statistics
cMediaIndependentHistoryTable—proprietary MIB used to support history
mediaIndependentDataSource and its desired value
mediaIndependentOwner and its desired value (The size of mediaIndependentOwner is limited to
32 characters
.)
mediaIndependentStatus with a value of createRequest (2)
Chapter 18 SNMP
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