Explains the SNMP application-layer protocol, which provides a standardized framework for communication between network managers and agents to monitor and manage network devices.
Simple Network Management Protocol (SNMP) is an application-layer protocol that provides a message format for communication between SNMP managers and agents. SNMP provides a standardized framework and a common language used for the monitoring and management of devices in a network.
SNMP
Use this concept to understand the application-layer SNMP protocols and their components for network device monitoring and management.
Restrictions for SNMP usage
This section lists the primary limitations and recommended usage guidelines for SNMP output and request handling
SNMP versions
This section explains SNMP versions, the different iterations of the Simple Network Management Protocol, and their major distinguishing attributes for network management and monitoring.
SNMP security models and levels
This section lists the SNMP security models and their supported security levels, showing the authentication and encryption mechanisms for each combination.
Security benefits of SNMPv3
This section lists the key security features that SNMPv3 adds and the types of security threats it addresses.
Comparison of response times for SNMP security models
This table lists the order of SNMP response times for different security models and security levels.
Security services of the SNMPv3 User-Based Security Model
This section provides an overview of the security services and mechanisms provided by the SNMPv3 User-Based Security Model (USM) to protect network management operations.
Access control in SNMP using the view-based access control model
This section provides an overview of the View-Based Access Control Model (VACM), describing how it enables controlled SNMP access to managed objects using views and access policies.
IP Precedence and DSCP options for SNMP traffic
This section provides details on how IP Precedence and DSCP values affect quality of service for SNMP traffic on routers, including configuration options and technical definitions.
Custom MIB Support Using SNMP Operation Script
Use this concept to extend device monitoring by defining custom Management Information Bases (MIBs) that expose additional operational data through SNMP without requiring a software upgrade.
Session MIB support on subscriber sessions
This section lists the supported features of CISCO-SUBSCRIBER-SESSION-MIB for monitoring subscriber session data via SNMP.
SNMP notifications: traps versus informs
This section lists the key differences between SNMP traps and informs, including their reliability, resource usage, and best-use scenarios.
Session types
Describes the supported subscriber session types, including PPPoE, IP Subscriber Packet, and IP Subscriber DHCP, which can be monitored via SNMP to track connection status, performance, and subscriber data.
Specify SNMP notification parameters
Use this procedure to configure the SNMP notification source interface, message queue length, and retransmission interval to meet your network requirements.
Configure the recipient of SNMP notifications
Use this procedure to configure an SNMP notification recipient (host) to receive SNMP traps from the device.
Configure linkUp and linkDown traps for a subset of interfaces
Use this task to enable or disable SNMP linkUp and linkDown traps for a specific group of interfaces by specifying a regular expression. This approach streamlines monitoring and reduces unnecessary notifications at scale.
Configure persistent MIB data
Use this task to enable persistent storage for SNMP MIB indices and cache QoS MIB data across process restarts, switchovers, and device reloads.
Configure SNMP trap notifications
Learn how to configure your router to send SNMP trap notifications using SNMPv3 for enhanced monitoring and security.
Configure SNMPv3
Use this procedure to configure SNMPv3 for secure and efficient network management and monitoring on Cisco devices.
Create a custom MIB using an SNMP script
Set the maximum SNMP agent packet size
Use this procedure to configure the maximum SNMP packet size accepted or generated by the SNMP server.
Display the SNMP context mapping
Learn to display SNMP context mappings and understand the relationship between community names and context names on the router.
Display the SNMP context mapping table
Use this task to display the current SNMP context mappings configured on your device.
Enable BRIDGE-MIB trap notifications
Learn how to enable BRIDGE-MIB trap notifications on your router to send SNMP events related to network bridges to your SNMP management system.
Monitor the packet loss
Use SNMP traps to monitor packet loss when it exceeds defined thresholds.
Restrictions for custom MIB
Set IP precedence and DSCP values
Learn how to configure IP Precedence or DSCP values for SNMP traffic using the CLI.
Set the contact, location, and serial number of the SNMP agent
Use this task to configure the system contact string, system location string, and system serial number for the SNMP agent.
Configure the router to drop error PDUs
Learn how to configure the router so that it drops error PDUs when polled with an incorrect SNMPv3 user name.