Snmp Community Names; Snmp Remote Monitoring; Ethernet Statistics Group; History Control Group - Cisco ONS 15327 User Documentation

Chapter 11 SNMP

11.6 SNMP Community Names

You can provision community names for all SNMP requests from the SNMP Trap Destination dialog box
in CTC. (See the
that uses a community name matching a community name on the list of provisioned SNMP trap
destinations. Otherwise, SNMP considers the request invalid and drops it.
If an SNMP request contains an invalid community name, the request silently drops and the MIB variable
snmpInBadCommunityNames increments. All MIB variables managed by the agent grant access to all
SNMP requests containing a validated community name.

11.7 SNMP Remote Monitoring

The ONS 15327 incorporates RMON to allow network operators to monitor the ONS 15327 E10/100-4
cards. This feature is not apparent to the typical CTC user, because RMON interoperates with an NMS.
However, with CTC you can provision the RMON alarm thresholds. (See the
Monitoring" section on page
15327.
ONS 15327 RMON implementation is based on the IETF-standard MIB Request for Comments (RFC)
1757. The ONS 15327 implements five groups from the standard MIB: Ethernet Statistics, History
Control, Ethernet History, Alarm, and Event.

11.7.1 Ethernet Statistics Group

The Ethernet Statistics group contains the basic statistics for each monitored subnetwork in a single table
named etherstats.

11.7.2 History Control Group

The History Control group defines sampling functions for one or more monitor interfaces. RFC 1757
defines the historyControlTable.

11.7.3 Ethernet History Group

The ONS 15327 implements the etherHistoryTable as defined in RFC 1757, within the bounds of the
historyControlTable.

11.7.4 Alarm Group

The Alarm group consists of a single alarm table. This table provides the network performance alarm
thresholds for the network management application. With CTC, you can provision the thresholds in the
table.
June 2002
"SNMP Support" section on page
11-7.) CTC also monitors the five RMON groups implemented by the ONS
11-3.) In effect, SNMP considers any request valid
"SNMP Remote
Cisco ONS 15327 User Documentation, R3.3
SNMP Community Names
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