Chapter 12 SNMP

SNMP Remote Monitoring

Multiple Target Out (Tag)—Refers to a group of entries in the Target Address Table. Notifications are forwarded using this tag. The Multiple Target Out tag is only relevant when proxy type is Trap and is used to send notifications to one or more NMSs.

12.10 SNMP Remote Monitoring

The ONS 15310-MA SDH incorporate 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 15310-MA SDH Procedure Guide for provisioning procedures.

Note Typical RMON operations, other than threshold provisioning, are invisible to the CTC user.

ONS 15310-MA SDH system RMON is based on the IETF-standard MIB RFC2819 and includes the following five groups from the standard MIB: Ethernet Statistics, History Control, Ethernet History, Alarm, and Event.

RMON is sampled at one of four possible intervals. Each interval, or period, contains specific history values called buckets. Table 12-6 on page 12-15lists the four sampling periods and corresponding buckets.

Certain statistics measured on the ML card are mapped to standard MIB if one exists else mapped to a non standard MIB variable. The naming convention used by the standard/non-standard MIB is not the same as the statistics variable used by the card. Hence when these statistics are obtained via get-request/get-next-request/SNMP Trap they don’t match the name used on the card or as seen by CTC/TL1.

For ex: STATS_MediaIndStatsRxFramesTooLong stats is mapped to cMediaIndependentInFramesTooLong variable in CERENT MIB. STATS_RxTotalPkts is mapped to mediaIndependentInPkts in HC-RMON-rfc3273.mib

12.10.1Ethernet Statistics Group

The Ethernet Statistics group contains the basic statistics for each monitored subnetwork in a single table named etherstats. The group also contains 64-bit statistics in the etherStatsHighCapacityTable.

12.10.1.1 Row Creation in etherStatsTable

The SetRequest PDU for creating a row in this table contains all needed values to activate a table row in a single operation as well as assign the status variable to createRequest. The SetRequest PDU OID) entries must have an instance value, or type OID, of 0.

In order to create a row, the SetRequest PDU should contain the following:

The etherStatsDataSource and its desired value

The etherStatsOwner and its desired value (up to 32 characters)

The etherStatsStatus with a value of createRequest (2)

The etherStatsTable creates a row if the SetRequest PDU is valid according to these rules. The SNMP agent decides the value of etherStatsIndex when the row is created and this value changes when an Ethernet interface is added or deleted; it is not sequentially allotted or contiguously numbered. A newly

 

Cisco ONS 15310-MA SDH Reference Manual, Release 9.1 and Release 9.2

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Cisco Systems 15310-MA manual Snmp Remote Monitoring, Ethernet Statistics Group, Row Creation in etherStatsTable, 12-14

15310-MA specifications

Cisco Systems has established itself as a leader in the networking domain, offering a wide array of solutions to meet the needs of modern businesses. Among its impressive product lineup are the Cisco 15310-CL and 15310-MA routers, designed to provide advanced network performance and reliability.

The Cisco 15310-CL is a versatile platform that primarily serves as a carrier-class router aimed at supporting high-speed data and voice services. It is built to handle the demands of large enterprises and service providers, offering a robust design that ensures maximum uptime and performance. One of its standout features is its modular architecture, which enables users to customize their configurations based on specific application needs. This scalability allows for future expansion without the need for a complete hardware overhaul.

Key technologies integrated into the Cisco 15310-CL include high-density Ethernet interfaces and a comprehensive suite of Layer 2 and Layer 3 protocol support. The device is capable of supporting multiple types of connections, including TDM, ATM, and Ethernet. This flexibility makes it an ideal choice for organizations that require seamless migration between various service types. Moreover, with features such as MPLS (Multiprotocol Label Switching) support and advanced Quality of Service (QoS) mechanisms, the router ensures that critical applications receive the necessary bandwidth and low latency required for optimal performance.

In contrast, the Cisco 15310-MA focuses on access solutions, providing a cost-effective entry point for businesses looking to enhance their network capabilities. It is well-suited for smaller offices or branch locations that need reliable connectivity without the expense and complexity associated with larger systems. The device supports a range of access methods and provides essential features like firewall capabilities, VPN support, and comprehensive security measures to protect sensitive data.

Both models benefit from Cisco's commitment to security and manageability, offering features like enhanced encryption protocols and user authentication mechanisms that help safeguard networks against threats. Additionally, they can be managed through Cisco’s intuitive software tools, simplifying configuration and monitoring tasks for IT administrators.

The Cisco 15310-CL and 15310-MA are ideal solutions for businesses seeking to enhance their network infrastructure, ensuring firms can keep pace with evolving technology demands while maintaining a focus on security and performance. Their combination of advanced features, modular capabilities, and robust support makes them valuable assets in the networking landscape.