SNMP enables you to monitor network devices from a central location. Many network management systems (NMS) are based on SNMP, and support for this protocol is a key feature of most network devices.
Juniper Networks provides many different platforms that support SNMP on Junos OS. Junos OS includes an onboard SNMP agent that provides remote management applications with access to detailed information about the devices on the network.
Junos OS supports:
- version 1 (SNMPv1)
- version 2 (SNMPv2c)
- version 3 (SNMPv3)
By default, SNMP is disabled on a Juniper Networks device. To enable and configure SNMP, click Configuring SNMP on devices running Junos OS.
SNMP implementation in Junos OS uses a master SNMP agent (known as an SNMP process or snmpd) that resides on the managed device. Various subagents reside on different modules of Junos OS as well (such as the Routing Engine), and these subagents are managed by the snmpd.
SNMP is not allowed to set the ifAdminStatus.
To ramp up on SNMP implementation in Junos OS, click Understanding SNMP implementation in Junos OS.
This article provides answers to the most common questions about SNMP support on Junos OS.
- Which ports (sockets) does SNMP use?
- Is SNMP support or provisioning different among the Junos OS platforms?
- Does Junos OS support the user-based security model (USM)?
- Does Junos OS support the view-based access control model (VACM)?
- Does Junos OS support SNMP informs?
- Can the SNMP manager access data for routing instances?
- Can I access a list of all routing instances on a device?