Cisco Systems WSC2960X24PSL manual Restrictions for Snmp, Information About Snmp, Snmp Overview

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Configuring Simple Network Management Protocol

Restrictions for SNMP

Restrictions for SNMP

Version Restrictions

•SNMPv1 does not support informs.

Information About SNMP

SNMP Overview

SNMP is an application-layer protocol that provides a message format for communication between managers and agents. The SNMP system consists of an SNMP manager, an SNMP agent, and a management information base (MIB). The SNMP manager can be part of a network management system (NMS) such as Cisco Prime Infrastructure. The agent and MIB reside on the switch. To configure SNMP on the switch, you define the relationship between the manager and the agent.

The SNMP agent contains MIB variables whose values the SNMP manager can request or change. A manager can get a value from an agent or store a value into the agent. The agent gathers data from the MIB, the repository for information about device parameters and network data. The agent can also respond to a manager's requests to get or set data.

An agent can send unsolicited traps to the manager. Traps are messages alerting the SNMP manager to a condition on the network. Traps can mean improper user authentication, restarts, link status (up or down), MAC address tracking, closing of a TCP connection, loss of connection to a neighbor, or other significant events.

The active switch handles the SNMP requests and traps for the whole switch stack. The active switch transparently manages any requests or traps that are related to all stack members. When a new active switch is elected, the new active switch continues to handle SNMP requests and traps as configured on the previous active switch, assuming that IP connectivity to the SNMP management stations is still in place after the new active switch has taken control.

SNMP Manager Functions

The SNMP manager uses information in the MIB to perform the operations described in the following table:

Table 8: SNMP Operations

Operation

Description

get-request

Retrieves a value from a specific variable.

get-next-request

Retrieves a value from a variable within a table.2

get-bulk-request3

Retrieves large blocks of data, such as multiple rows in a table, that would otherwise

 

require the transmission of many small blocks of data.

get-response

Replies to a get-request, get-next-request, and set-request sent by an NMS.

 

Catalyst 2960-X Switch Network Management Configuration Guide, Cisco IOS Release 15.0(2)EX

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OL-29044-01

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Contents Americas Headquarters First Published July 10Page N T E N T S Configuring the Cisco Discovery Protocol Configuring Simple Network Management Protocol Rspan Vlan Vii Viii Convention Description Document ConventionsBold font Reader Alert Conventions Obtaining Documentation and Submitting a Service Request Related DocumentationXii Information About Using the Command-Line Interface Command ModesQuit Mode Access Method Prompt Exit Method About This ModeConfigure Ctrl-ZMode Using the Help SystemCommand or Action Purpose Step HelpNo and default Forms of Commands Understanding Abbreviated CommandsCLI Error Messages Configuring the Command History How to Use the CLI to Configure FeaturesConfiguration Logging Error Message MeaningRecalling Commands Changing the Command History Buffer SizeCommand or Action Privileged Exec mode Enabling and Disabling Editing FeaturesDisabling the Command History Feature Terminal no historyEditing Commands through Keystrokes Editing Command Lines That Wrap Show more command begin include exclude regular-expression Searching and Filtering Output of show and more CommandsAccess-list Show more command begin include excludeCommand or Action Example OL-29044-01 Finding Feature Information Prerequisites for Configuring the Configuration EngineCisco Configuration Engine Software Restrictions for Configuring the Configuration EngineInformation About Configuring the Configuration Engine Related TopicsConfiguration Service Cisco Configuration Engine Architectural OverviewConfigID Event ServiceCisco Networking Services IDs and Device Hostnames NameSpace MapperDeviceID Hostname, DeviceID, and ConfigIDHostname and DeviceID Initial Configuration Cisco IOS CNS AgentsSynchronized Configuration Automated CNS ConfigurationIncremental Partial Configuration Device Required ConfigurationEnabling the CNS Event Agent How to Configure the Configuration EngineConfigure terminal EndConfigure terminal Enters the global configuration mode Reconnect-time time backupCns config partial hostname ip-address Cns config initial hostname ip-addressEnabling the Cisco IOS CNS Agent On the switch Enabling an Initial Configuration for Cisco IOS CNS AgentCommand or Action Purpose End Returns to privileged Exec modeConfigure terminal Cns template connect name Exit Hostname nameExit Returns to global configuration mode Discover controller controller-typedlciHostname string string udi event image command ExitPort-number event no-persist Source ip-address syntax-checkRefreshing DeviceIDs Show cns config connectionsShow cns event connections No cns event ip-address port-number Enabling a Partial Configuration for Cisco IOS CNS Agent Cns config partial ip-addresshostnameMonitoring CNS Configurations Command PurposeRelease Modification Additional ReferencesTechnical Assistance Description Link Cisco IOS 15.02EXInformation About CDP CDP OverviewConfiguring CDP Characteristics How to Configure CDPDefault CDP Configuration FeatureOptional Configures CDP to send Version-2 advertisements No cdp run Disables CDP Configure terminal No cdp run EndDisabling CDP Cdp run Enables CDP if it has been disabled Configure terminal Cdp run EndEnabling CDP Disabling CDP on an Interface No cdp enable EndEnters interface configuration mode Specifies the interface on which you are disabling CDPCdp enable End Enabling CDP on an InterfaceMonitoring and Maintaining CDP Cdp enable Enables CDP on a disabled interfaceCommand Description Specifies the interface on which you are enabling CDPShow cdp traffic CommandShow cdp neighbors interface-id Related Documents Related Topic Document TitleFeature History and Information for Cisco Discovery Protocol Prerequisites for Snmp Supported Snmp VersionsModel Level Authentication Encryption Result SHA Snmp Overview Restrictions for SnmpInformation About Snmp Snmp Manager FunctionsSnmp Agent Functions Snmp MIB Variables AccessSnmp Community Strings Snmp Notifications Snmp ifIndex MIB Object ValuesFeature Default Setting Default Snmp ConfigurationSnmp Configuration Guidelines Interface TypeConfigure terminal No snmp-server End How to Configure SnmpDisabling the Snmp Agent Configuring Community Strings No snmp-server Disables the Snmp agent operationSwitchconfig# access-list 4 deny any Configuring Snmp Groups and Users Snmp-server engineID localIntegers twice the normal width V1 is the least secure of the possible security modelsSnmp-server user username Configuring Snmp Notifications End ExampleNotification Type Keyword Description Port-security Snmp-server enable traps port-securitySnmp-server enable traps port-security trap-rate rate RtrV2c access access-list v3 encrypted access Snmp-server user username group-nameremoteRange is 1 to 1000 the default is Setting the Agent Contact and Location Information Snmp-server contact text Sets the system contact string Limiting Tftp Servers Used Through SnmpSnmp-server location text Sets the system location string Monitoring Snmp Status Snmp-server tftp-server-listSnmp Examples Switchconfig# snmp-server enable traps entity Configuring Span and Rspan Prerequisites for Span and RspanRestrictions for Span and Rspan RspanFlow-Based Span Fspan and Flow-Based Rspan Frspan Span and Rspan Information About Span and RspanLocal Span Example of Local Span Configuration on a Single Device Remote SpanExample of Rspan Configuration Span and Rspan Concepts and TerminologySpan Sessions Source Ports Source VLANs Rspan Vlan Span and Rspan Interaction with Other Features Flow-Based Span Span and Rspan and Device StacksConfiguration Guidelines Default Span and Rspan ConfigurationSpan Configuration Guidelines Fspan and Frspan Configuration Guidelines How to Configure Span and RspanRspan Configuration Guidelines Creating a Local Span SessionMonitor session sessionnumber source Both rx txEnd No monitor session sessionnumber all Local remoteCommand or Action Purpose Specifying VLANs to FilterConfiguring a Vlan as an Rspan Vlan Monitor session sessionnumber filter vlanRemote-span End Remote-spanCreating an Rspan Source Session Monitor session sessionnumber Destination remote vlan vlan-idSwitchconfig# no monitor session Creating an Rspan Destination Session Remote vlan vlan-id Switchconfig# monitor session 2 source remote vlan Configuring an Fspan Session Configure terminal Enters global configuration modeMonitor session sessionnumber source Configuring an Frspan Session Detailed Steps Monitoring Span and Rspan Operations Or Frspan configurationShow monitor Span and Rspan Configuration Examples Example Configuring Local SpanFeature History and Information for Span and Rspan Examples Creating an Rspan VlanLimit IPv4, IPv6 or IPv4 + IPv6, or D E Span sessions
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WSC2960X24TSL, C2960XSTACK, WSC2960X24PDL, WSC2960X24TSLL, WSC2960X24PSL specifications

Cisco Systems has long been a leader in networking technology, and its range of switching products exemplifies its commitment to high performance and reliability. Among its popular offerings are the Catalyst 2960-X and 2960-XR series switches, including models like WSC2960X48TSL, WSC2960XR48FPDI, WSC2960XR24TDI, and WSC2960XR48LPDI. These switches are designed to deliver efficient Layer 2 and Layer 3 capabilities, making them ideal for enterprise and small to medium-sized business networks.

The WSC2960X48TSL model boasts 48 Ethernet ports, providing ample connectivity for various devices. It supports Power over Ethernet (PoE), making it suitable for powering IP cameras, wireless access points, and VoIP phones. The switch also features Cisco’s Smart Operations technology, which simplifies network management and enhances user experience through automated features such as Cisco Auto Smartports and Auto QoS.

Turning to the WSC2960XR48FPDI, this version also features 48 ports but with enhanced redundancy and power capabilities, making it suitable for critical applications where uptime is paramount. This switch offers dual power supply options, ensuring that even in the event of a power failure, network operations continue seamlessly. Its Flexible NetFlow feature enables enhanced visibility and monitoring of traffic, allowing businesses to optimize their bandwidth usage and troubleshoot issues more efficiently.

The WSC2960XR24TDI model, with its 24 ports, is perfectly designed for networks with fewer devices yet still demands robust performance. It also includes advanced security features, such as IEEE 802.1X port-based authentication, enhancing the protection of sensitive data and communications within the network.

Lastly, the WSC2960XR48LPDI model is tailored for environments that require high availability and robust performance, featuring 48 ports along with Layer 3 static routing capabilities. With its support for IPv6 and advanced QoS features, this switch is prepared for the future of networking, accommodating the increasing demand for bandwidth and reliable connectivity.

All these switches utilize Cisco IOS software, providing a familiar interface for network administrators. They also incorporate advanced troubleshooting tools, like Cisco Prime, which facilitate effective network management. Collectively, the WSC2960 series switches represent a comprehensive solution for businesses seeking dependable, scalable, and manageable networking options. With their combination of performance, features, and reliability, these Cisco switches are essential for meeting the demands of modern networking.
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