SNMP Overview

The Simple Network Management Protocol (SNMP) allows you to manage a router running the JUNOS Internet software.

The JUNOS software supports SNMP Version 1 and Version 2 (also known as Version 2c, or v2c). The JUNOS implementation of SNMP does not include any of the security features originally included in the IETF SNMP drafts, but later removed because the IETF community could not agree upon a standard.

The JUNOS SNMP software consists of an SNMP master agent and a MIB II agent.

The JUNOS implementation of SNMP supports the following features specified in RFC 1213 and RFC 1215:

• MIB II and its SNMP version 2 derivatives, including:
  • Statistics counters
  • IP and SNMP management
  • Interface management
• MIB II SNMP version 1 traps and version 2 notifications
• SNMP Version 1 Get and GetNext requests and Version 2 GetBulk requests
• JUNOS-specific secured access list
• Master configuration keywords
• Reconfigurations upon SIGHUP

The JUNOS SNMP implementation currently does not support IP forwarding tables or Set requests.

The JUNOS SNMP implementation listens on port 161 for SNMP requests and on port 162 for SNMP traps. These are the ports recommended by RFC 1906.

This chapter discusses the following topics:

• SNMP Standards
• SNMP Traps Supported by the JUNOS Software
• System Logging Severity Levels for SNMP Traps