What are Snmp MIBs? | Cisco Systems Dial NMS instruction

Overview of Basic SNMP Building Blocks

What are SNMP MIBs?

Figure 2 SNMP Event Interactions Between the NMS and the Agent

Get request

Response

Get next

NMS

Responseinitiated

Get next

Response

Trap (agent initiated)

Agent

(Cisco IOS device)

NMS

26095

What are SNMP MIBs?

A Management Information Base (MIB):

•Presents a collection of information that is organized hierarchically.

•Is accessed by using a network-management protocol, such as SNMP.

•References managed objects and object identifiers.

Managed object—A characteristic of a managed device. Managed objects reference one or more object instances (variables). Two types of managed objects exist:

•Scalar objects—Define a single object instance.

•Tabular objects—Define multiple-related object instances that are grouped together in MIB tables.

Object identifier (or object ID)—Identifies a managed object in the MIB hierarchy. The MIB hierarchy is depicted as a tree with a nameless root. The levels of the tree are assigned by different organizations and vendors.

Basic Dial NMS Implementation Guide

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Cisco Systems Dial NMS manual What are Snmp MIBs?

Contents

Basic Dial NMS Implementation Guide Basic Dial NMS Implementation Guide What is SNMPv1? What is SNMPv2? Dial NMS Service DefinitionAudience Scope Task 3-Using Mrtg to Monitor and Graph Traffic Loads Task 5-Setting Up a Web Portal for the Dial NMSTask 1-Enabling Snmp in a Cisco IOS Device Enabling Snmp Task 6-Managing IP Addresses by Using DNS Task 7-Using HP OpenView to Create the Snmp FrameworkTask 8-Using CiscoWorks 2000 Resource Manager Essentials Using CiscoView Contents Basic Dial NMS Implementation Guide Audience PurposeScope Convention Description ConventionsBold Related Documentation and Sites Technical References and Support Internetworking Solutions Guides Cisco Connection Online Documentation Feedback Documentation CD-ROMAcknowledgements About Snmp UCD-SNMP What are the Basic Components of SNMP? Site DescriptionSnmp Technology TAC Page -Network Managed devices NMS What are Snmp MIBs? Vines What is SNMPv1? SNMPv1 and ASN1 Data Types What is SNMPv2? SNMPv1 Protocol Operations About Snmp Management SNMPv2 and SMI About Snmp Security Page Network Design for a Dial NMS Case Study Introduction to the Case Study Benefits of a Dial NMS THEnet Dial NMS Planning QuestionnaireNetwork Design Questions Answers Mrtg Custom-based AAAAccounting tools and database Query tools Dial NMS Service Definition Show version Show runningShow modem version Show interface accounting ` show access-lists ` show modem operational-status` show modem connect-speeds Show snmp group Network Topology for One POP Cisco AS5800 access servers Network Topology Hardware Purpose Hardware Requirements101 50,000 5000 Lines / 1288 = 3.88 chassis AS5800s Software Requirements Software and Management Systems PurposeUses CLI-based Snmp freeware to explore the Snmp MIBs OIDs that are useful for operating a dial network Configuration Design Parameters Network Name Assigned IP Subnet Description NOCSnmp Community Strings Purpose Implementation and Operation Tasks Support Contact Phone T1 Dial-in Number Circuit ID ContractABC DEFPage CISCO-POP-MGMT-MIB OLD-CISCO-CHASSIS Dial Related System Management MIB II / InterfacesRFC1213-MIB Command Equivalent Cisco IOSShow controllers t1 Call-counters Variable Description Show modemConnect-speeds Show caller Show caller ip Show caller user About Enabling Snmp ` UCD-SNMP Command Purpose Enabling Snmp This command enables 14+ other commands for distinct Types of Snmp traps. Edit this command list to include onlyChanges, environmental variables, and critical device ConditionsPage About Using UCD-SNMP UCD-SNMP Installing UCD-SNMP and Downloading Cisco MIBs Exploring Snmp MIBs for Dial Netwo rks Step Serial1/0/00 propPointToPointSerial About Snmp Commander Setting Up Snmp Commander Snmp Commander Tool Basic Dial NMS Implementation Guide Page Task 3-Using Mrtg to Monitor and Graph Traffic Loads About Mrtg Base MIB and OID Description About Selecting Dial OIDsCISCO-POP-MGMT-MIB CISCO-MODEM-MGMT-MIB NAS How to Inspect and Interpret Data Daily Graph DS0s and PPP Sessions in Use Configuration file used to create these graphs is posted at Monthly Graph DS0s and PPP Sessions in Use Creating and Editing a Configuration File Interface Type Syntax Example Example # purpose DS0s and Analog # purpose cpmISDNNoResource and cpmModemNoResource Crontab from any directory # purpose activeDS0s and cvpdnSessionTotal Sending Mrtg Graphs to a Web Server Mrtg Graphs Viewed by Using a Web Browser Page About Syslog Message Type Description Syslog Message Severity Level About NTP About Modem Call Records Web-Based MCR Viewer Enabling NTP on a Cisco IOS Device Setting Up an NTP Client Travis-nas-01show ntp association Server Problem Solution Troubleshooting the NTP ClientNtpq -p command Enables logging up to the debug level all eight levels Console errors or logging console warningsSpecifies the IP address of the syslog server Configuring the Syslog Daemon This example, only the fourth T1 of a T3 card is shown Daemon is not running, no ID is returned Inspecting Syslog Messages in t he Log File Aurora/etc -tail -f /var/log/router.log Generic URL Syntax Description Example Views logs on a File//var/log/router.log Local hostPage About a Web Portal Utility Function Utility Function Building a Device Linker Web Function Formula Example Device Linker Management Troubleshooting a Cisco 2511 Console Connection C2511-oob#clear line tty About Http Access to the CLI Using Http to Access CLI CommandsEnables the router to function as an Http server Uses the AAA facility as an authentication method Formula Example Post the Html page that you created in to a web server Cisco IOS CLI Commander Click on a CLI command and view the command output in a web Output for the Show Caller Command Task 6-Managing IP Addresses by Using DNS About Managing IP Addresses Using Cisco Network Registrar CLI Command s Nrcmd zone 101.21.172.in-addr.arpa. listRR Opt/nwreg2/usrbin/nrcmd zone 101.21.172.in-addr.arpa. listRR Nrcmd zone the.net. addRR bobslake-nas-02 a Run the script by using the -b option Using a Batch File to Make Changes to a DNS ConfigurationFollowing output appears Creating a Primary Forward Zone Creating an IP Tracker Web IP Tracker Web Host = doc-oob-03.the.net How to Create a Reverse DNS Zone Page Task 7-Using HP OpenView to Create Snmp Framework About HP OpenView Verifying the Snmp Configuration Last message Initialization complete Exit status Object manager name snmpCollect State Snmp Configuration Loopback IP Address and Community Strings Click Add and Apply to submit the entries About Snmp Demand Polls Performing an Snmp Demand Poll Select Network Connectivity Poll Node Field Description Testing Snmp Get Requests Confirms the interfaces were successfully pingedYou can identify the software version running on the device Field Returned Value Description Troubleshooting Snmp and a Demand Poll Verifying that Snmp Traps Are Received Traps in the All Events Browser Unmanaging the Dial Ports Available Interfaces and Ports for a Cisco AS5800 Creating and Adjustin g Maps About Discovery Filters Go to ViewSelect Automatic Layout Choose Off For This Submap Setting Up and Editing a Discover y Filter TheNetNodes TheNet Node List AS5800-1, AS5800-2 Constituent parts Using the Hpov CLI to Enter a Device into the Database Restart the netmon daemon by entering the following commandsPage About CiscoWorks 2000 RME ReferenceCiscoWorks 2000 TAC Support Page -Provides links to CiscoWorks 2000 Documentation Set -A collection Importing Devices from Hpov and Popul ating the Databases Select Inventory Import from Local NMS Click Next Devices are imported and a status summary appears To accept the default settings, click Finish Verifying that Device Polling is Turned On Polling the Devices Status of the Devices Select one or more devices Select All in the Views windowInspect the available elements for the devices Select All Devices Backing up Cisco IOS ConfigurationsSelect one or more devices from the list that appears Go to Monitor CiscoView Using CiscoViewSelect and view different system components Available Modems in the Cisco AS5800 Dial Shelf Page Http AAANTP Snmp Fcaps DNSUCD-SNMP FTP Ovw& command Ovstop commandNTP FAQ Managed devices Management Message types and commands MIBsIncident tracking NMS Touch command Troubleshooting HP OpenView NOC POP Index Basic Dial NMS Implementation Guide